Database Users

Hermes Lithium Battery. End of story.

Hello everyone. First of all, let me congratulate all of you who have made this incredible site. I've been reading your threads for 3 weeks and finally i wanted to make my first post. I didnt wanted to be a stupid post so thats why it took me 3 weeks to make it.
I got my first Hermes 5 days ago (yes i searched for info about hermes 2 weeks before i got it) and it is everything i always wanted/needed.
I live in a city called Temuco in Chile (A southamerican country ) and this toys are very expensive even if its a 2 or 3 years old toy like hermes).
When i received my Hermes i was ready to flash roms and got everything to do it, thanks to you guys),
I'm very pleased with some of your roms and now im using [OPTIMIZED Manilla2d][20755 09/29](AlmostNak3d)(V8) by joshkoss.
The only subject that worried me was.................... Battery life, so i did some searching and thats my first post about. Hope you guys find it usefull. I know there are some battery related posts around but wanted to make some conclusions about the subject.
Here we go.
I've been searching and reading different articles about optimizing a li-ion and li-ion polymer battery, as they basically behave the same way.
In recent days i've been thinking a way to keep my battery life longer.
What i first thought, and without any knowledge, is what i've heard all my life: "A fast charged" battery lasts shorter than a "slow charge" battery.
In some battery chargers there are two ways to charge batteries. Slow and fast. And i always feel that slow charge was better than fast, so i thought.
My Hermes charger is 5V 1A.
If i charge my hermes through USB (Which i think has less than 1A) my battery should be "better charged" and the charge should last longer.
I never quite tested this but as a normal "battery user" it sounded more logical to me.
So i searched on google if there was any information about li-ion batteries and its characteristics.
I went to www.batteryuniversity.com and what i read astonished me.
Battery Conclusions
1.- Lithium batteries are completely different than older nickel based batteries.
2.- Lithium is a very unstable element and behaves abnormally when overcharging and overdischarging.
3.- According to batteryuniversity, "Overcharging makes the cell causes plating of metallic lithium on the anode; the cathode material becomes an oxidizing agent, loses stability and releases oxygen. Overcharging causes the cell to heat up. If left unattended, the cell could vent with flame."
4.- Over-discharging is as dangerous as overcharging. According to batteryuniversity, if discharged, "Copper shunts may have formed inside the cells, leading a partial or total electrical short. The cell becomes unstable. Charging such a battery would cause excessive heat and safety could not be assured."
5.- Lithium batteries are usually overcharge and over-discharge protected.
6.- You shouldnt use chargers different than the manufacturer's one.
7.- End of story and End ob battery thoughts.
I (we) just have to live with that.

The Li-on cells for my Makita tools are charged on a computer controlled charger. It reads temp and level of charge and charges accordingly. Manufacturers estimate 3000 charges before the battery is dead, and this after fast heavy discharge that can make a battery too hot to hold and fast charge that takes 22 minute on a 3ah batttery from fully flat to fully charged.
The people who use Li-on at the edge of their accepted use, the radio control flyers, use computer controlled chargers that read the same parameters and more. Many of their chargers read individual cells and balance the charge. Again, after use, the batteries can be too hot to hold.
In a phone or a laptop we use a wall wart the same as any old nicad. I dont know if any clever stuff goes on inside the laptop or phone to regulate charge level according to battery condition but I don't think so. We get about a year out of a laptop that is trickle charged. I'm on almost 2 years for my Tytn with no discernable drop in life but I think I've been lucky, it seems to be about a year for many people. So that's 365 charges, approx.
My guess is that it's charger technology rather than battery technology that limits our battery life.

The Hermes does have a battery sensor. It can be screwed up though when you go below a certain level (<10%), hence people who have trouble recharging a TOTALLY flat battery. The Hermes sensor doesn't detect a battery giving a red LED.

I don't know anything about battery...
I'm currently have a problem with a battery or power-related. My X01HT have just 1 day life in use. I was try it with different second-hand battery, but it likes first condition when only life in 1 day. Hmm.. may be which is the wrong? The battery or the phone?
I have 2 set of X01HT, next time I will try to exchange the battery from both of it. I want to test their battery life to compare and make conclusion about which is the wrong between the battery or the phone.
My tested phone have radio version 1.14.01.10 and have unlocked with NextGenServer. I am using the newest Pays ROM Full. IPL: 1.04. SSPL: 2.60 (Olipro). I have experienced using Pays ROM in twice, first which already sold and the second is this case. Both of the have the same radio version. I think the first one is okay about the life stability, but this one have a problem. May be ROM have influenced the battery life? Or may be IPL/SSPL have caused instability too?
Sorry guys, about poor in English. May be I need to make a thread to share my problem with you.
Thanks.

Hermes are battery hogs but some programs can be power leeches too.
If the radio rom isn't good for your area it also can be a power drain as it is constantly scanning for connection.
I tend to find about 2 days is all my battery lasts for with a little bit of use. Depends what you are using....
Cheers...

I have 3 pieces of SoftBank X01HT.
One of them just fine in the life of the battery, so network here is fine too (maybe). But this one is already sold, so I can't test the battery to my another X01HT which have a critical power problem.
Another X01HT so sleepy, the life of the battery just 1 day. I was try to replace the battery with another battery (2ndhand and I don't know the condition actually) but it have no change, just 1 day too, may be less... Now I try the third battery. I'll reported soon about this...
So how about your opinion about critical power in the X01HT? May be there is another factor beside the battery? Beside the program/OS? May be some physically probelm with their board or etc?
Sorry about poor in English.

I can't say much about the X01HT... All Hermes internals should be the same, but they may put extra things in or take things out depending where you buy your Hermes.
So saying, the Hermes, if not all HTC phones, seem to use a large amount of power. If you use apps it will of course discharge faster.
Sometimes it can be as simple as changing the radio rom but this is risky as the radio rom tends to be permanent brick if something goes wrong with the flash.
Maybe an app you have running and don't realise, I had a BT program that did this, had to shut it down or my battery was down to 70%in about an hour or 2.
Cheers...

Batteries, Batteries, Batteries

I felt this would be necessary since there seems to be varied battery usage. Perhaps we could all post how long our battery lasts, how we use it and most importantly how we CHARGED it as soon as we took it out of the box.
Some people say we have to CONDITION the batteries. While others say CONDITIONING is not necessary with these types of batteries.
Perhaps the results of several users will help us figure out the best methods. Feel free to ask ?s.

search
http://forum.xda-developers.com/showthread.php?t=446131

g2tl said:
search
http://forum.xda-developers.com/showthread.php?t=446131
Click to expand...
Click to collapse
Try reading,
There posts are not detailed. That is how i want to start this thread out. Stop thread crapping.
So i just got my tilt and i am currently charging it, i will post as i use it.

Battery usage is sooo variable I doubt you'll ever get an apples-to-apples comparison.... but for what it's worth, here's my .02.
1) I fully charged my battery as-soon-as I got home from the store with the phone. I have since drained it as-far-as 5% remaining and fully charged it several times. (I realize that this probably doesn't do anything with a lithium battery, but it makes me feel better.)
2) Battery life is hugely dependent upon signal integrity and strength, both of which are marginal at my house. I get 3G most of the time, Edge some of the time, and nothing now and then.
3) In my week of ownership, it seems that both Wifi and GPS are BIG battery hogs. Even avoiding Wifi, my phone was down to 38% by 1:00 pm today with usage as follows - Charged overnight and taken off the charger at 6:45 am. About 25 minutes of browsing while on 3G. Email scans on one account every 5 minutes, but little traffic. A few text messages and about 35 minutes of GPS use with TomTom.
Bottom line, I thing there will be battery issues if you do much more than use the Fuze as a phone.
Hope this helps,
Richard

The sales guy turned the phone on for me and started setting it up right at the store. Walked half a block to my job and started charging the phone. It charged fully, however, I played around with it as it charged.
I use the data connection only when needed.
Here's a typical day:
Charged the phone over night. Woke in the middle of night, around, and unplugged it as it was fully charged. Woke up around 8am. Use the data connection to check e-mails, weather, and browsed for no longer than 10 mins.
By the time I left my house, which was about 8:40am, one line was down.
Used browsing and e-mailing again between 9:30-10:30.
Used AIM for about 15 mins after that.
By 1pm... my battery was half way drained!
That is the typical usage of the phone. Didn't really receive or make phone calls much... perhaps 2 or 3 calls for about 4 mins each.
I tried getting a new battery from the store but they don't have any yet. They had me call up AT&T and they don't have yet. Trying to get one from the manufacturer now.
This is the only thing that I don't like about this phone... the battery life!
I would use the 8125 with Wifi and lasted all day!

What is the difference between NiCad, NiMH and Lithium Ion batteries?
Nicad vs. NiMh
The main difference between the two is that NiMH battery (the newer technology of the two) offers higher energy density than NiCads. In other words, the capacity of a NiMH is approximately twice the capacity of its NiCad counterpart. What this means is for you is increased run-time from the battery with no additional bulk or weight. NiMH also offers another major advantage: NiCad batteries tend to suffer from what is called the "memory effect". NiMH batteries are less prone to develop this problem and thus require less maintenance and conditioning. NiMH batteries are also environmentally friendlier than NiCad batteries since they do not contain heavy metals (which present serious landfill problems). Note: Not all devices can accept both NiCad or NiMH batteries.
Lithium Ion
Lithium-Ion (Li-Ion) has become the new standard for portable power in consumer devices. Li-Ion batterys produce the same energy as NiMH battery but weighs approximately 20%-35% less. This is can make a noticeable difference in devices such as cellular phones, camcorders or notebook computers where the battery makes up a significant portion of the total weight. Another reason Li-Ion batteries have become so popular is that they do not suffer from the "memory effect" at all. They are also environmentally friendly because they don't contain toxic materials such as Cadmium or Mercury.
​Just as a rule of thumb (so to speak) I would NOT recommend fully discharging your Lithium battery. If you look at the physics behind it, you can break down the threads that help hold the charge and cause the battery to deterorate more rapidly.
Lithium battery do not need to be fully discharged and based on my experience, if you do that you better buy a few spares. You can plug your phone/battery in to a charging source frequently and often if it's available.
My battery for my Fuze last me all day (6:30am-9:00pm) with heavy surfing and hour+ calls on 3G.

I fully charge and drain my battery (until it tells me to charge) for the first few charges (i'm on my third charge so far, and will continue into the 5th charge). like previously mentioned, it probably doesn't do much for Li battery, but makes me feel better.
So far I've been getting 2 days out of a single charge from the following activities:
- scan for email every 4hrs
- data connection set to turn off after 45 sec of inactivity
- browse on internet for close to an hour a day on 3G
- on phone for about 30min/day.
- music for varying lengths of time
I know I can get 3 days out of a single charge if I wanted to, but I usually drain it on purpose by playing music on speaker on second day.
I am definitely considering getting a spare battery + cradle charger, but I will probably wait until I visit Asia later this year. After all, HTC's home is in Taiwan and apparently accessories are cheaper there.

Constant usage battery life

From what I have seen, most battery life comparisons/stats are usually done with the phone in standby/screen off majority of the time.
I decided to do it the other way.
Last night to this morning:
I tried charging my battery to 100% but time constraints only had me charge it to around 84% (late for work).
I don't use/have a charger at work nor do I have one in my car. I work 8 hours straight (11pm - 7am) and I almost always stream pandora the entire time.
I am using the seidio extended battery and the only thing that stays off is wifi when I am not within range of any kind of open network (starbucks) or my own saved connection list. 4g/3g, gps, and background data are constantly on.
So, from 84% left the house and started streaming pandora in the car. Get to work about 15 minutes later with no interruption in streaming (just turned the volume down). I do shut off my screen while streaming when I put the phone in my pocket.
Surfed the web, watched some youtube videos, checked gmail and facebook (which auto sync about every hour and gmail notifies me of every single email I get), and played some games here and there (nothing great) throughout the night.
Basically my intent was to never let the phone sit and do nothing. The entire time pandora was streaming (browsing the net and streaming, checking gmail/facebook and streaming) but youtube would always stop pandora.
Got 8 hours of constant use. I don't want to say moderate/light/heavy as that scale changes from person to person. Moderate for one person may be heavy for the next.
I charged the battery in the phone because I don't have an external charger for it. Although I may get one because my charging method still involves me taking the battery out of the phone.
No task killers, no setcpu (I am rooted), no custom rom (from the dev forum).
I am using bakedsnack kernel #4, launcherpro, and I have personally uninstalled a crap load of stuff (even htc sense and rosie altogether).
My opinion is that all these gimmicks that we have to go through to get good battery life while in standy are not necessary. What is necessary is for the charging system in the evo to be revamped. This is my own opinion, but I think the charging system in the evo skips stage 2 of the charging process http://www.batteryuniversity.com/partone-12.htm which is why (this is what I think, I am no expert) so many people see the sudden drop from 100% down to whatever shortly after they unplug their charger.
It kind of makes sense as to why some people who charge their stock batteries in the ebay externals get better battery life, it's because they are actually being charged properly.
Again, this is just my opinion and I am in no way an expert on this. Just disclosing my experience and observations of my phone and it's behavior. Take from it what you will.

That's pretty amazing dude. Me personally would consider your use for this test to be pretty heavy. I'm more than impressed to see 37% battery life. And from what I've been reading up on the external charger is definitely the way to go. Although it's quite a pain to have to charge our evos like this just for maximum battery life. Hopefully in the future releases of phones we won't have tis do things like this. As mentioned in another post the switching of the battery to charge it will eventually make the back door loose or maybe even break sooner than planned, which is a problem for people who don't have extra doors. I guess it's not a bad investment to buy extra doors though.
Sent from my PC36100 using XDA App

lovethyEVO said:
From what I have seen, most battery life comparisons/stats are usually done with the phone in standby/screen off majority of the time.
I decided to do it the other way.
I am using the seidio extended battery
My opinion is that all these gimmicks that we have to go through to get good battery life while in standy are not necessary.
It kind of makes sense as to why some people who charge their stock batteries in the ebay externals get better battery life, it's because they are actually being charged properly.
Click to expand...
Click to collapse
Here is my take and i edited your post down to the points i am discussing.
First I like the fact you realize most battery tests and many of the people getting ridiculous battery life are idle most of the time (even if they say they are moderate use normally they have 1-3 hours of moderate use out of the 30 hours battery life they claim). I think showing actual usage time is much more impressive.
Now if you are going to do a battery post and talk about opinions and what your battery life is ... i don't suggest using an extended battery. you show that over aprox 8 hours of use (wont classify it as heavy moderate etc since you didnt) you lost about 50% the problem here is the extended battery from seidio has a much larger capacity then your standard htc battery that comes with evo (even if it doesnt actually have the 3500mah it is still a lot more). On a est i did i could play a movie on a stock battery for just over 5 hours before the battery drained using nothing but the stock install of a rom and without changing settings to turn things off etc. So in my opinion the battery life you are showing is actually a little low for that battery but that not really the point.
now as for the evo charging incorrectly. the reason why peoples batteries drop quickly the first 20-30 minutes (for most who have a correctly calibrated "battery") is because EVO doesn't have a trickle charge. this doesnt mean the evo isnt charging the battery correctly. the idea behind not having a trickle charge is it helps prolong the life of the battery it self at the cost of 0-10% charge depending on where it is when you take it off the charger.
While i personally would rather have the trickle charge and have to buy replacement batteries more often. it isnt that the evo charges incorrectly it. They jsut made the choice to try to make the battery itself last as long as possible at the cost of some battery use time depending on when you take it off the charger.

These are my latest seidio 3500 numbers with correct battery conditioning. Going to try and duplicate these numbers. Most of about 10 hours was slacker and pandora. This was from 100 to 14 percent on 3500 seidio. Pics for your pleasure and debate. I was able to get another 8 hours standby from this point and hour of lets golf before battery died. That was my 2nd conditioning of the battery. Going on 3rd full slow trickle charge up now. The trickle charge on battery wall charger takes about 12 hours wtf but worth it. I just use my cheap china 3000mah to cover the time.
Sent from my PC36100 using XDA App

omegasun18 said:
Here is my take and i edited your post down to the points i am discussing.
First I like the fact you realize most battery tests and many of the people getting ridiculous battery life are idle most of the time (even if they say they are moderate use normally they have 1-3 hours of moderate use out of the 30 hours battery life they claim). I think showing actual usage time is much more impressive.
Now if you are going to do a battery post and talk about opinions and what your battery life is ... i don't suggest using an extended battery. you show that over aprox 8 hours of use (wont classify it as heavy moderate etc since you didnt) you lost about 50% the problem here is the extended battery from seidio has a much larger capacity then your standard htc battery that comes with evo (even if it doesnt actually have the 3500mah it is still a lot more). On a est i did i could play a movie on a stock battery for just over 5 hours before the battery drained using nothing but the stock install of a rom and without changing settings to turn things off etc. So in my opinion the battery life you are showing is actually a little low for that battery but that not really the point.
now as for the evo charging incorrectly. the reason why peoples batteries drop quickly the first 20-30 minutes (for most who have a correctly calibrated "battery") is because EVO doesn't have a trickle charge. this doesnt mean the evo isnt charging the battery correctly. the idea behind not having a trickle charge is it helps prolong the life of the battery it self at the cost of 0-10% charge depending on where it is when you take it off the charger.
While i personally would rather have the trickle charge and have to buy replacement batteries more often. it isnt that the evo charges incorrectly it. They jsut made the choice to try to make the battery itself last as long as possible at the cost of some battery use time depending on when you take it off the charger.
Click to expand...
Click to collapse
50% loss over 8 hours of near constant use (my awake time shows that it did manage to sleep somehow even though I streamed pandora constantly) on any battery (extended or not) is actually a good thing as it shows that even with the phone fully bogged down (almost all radios on) it can last a full work day (which is what most people are concerned about).
I still believe the evo does not charge the batteries correctly and it is not solely related on the absence of a trickle charge.
Again, from my observations over the course of the past three weeks. I started with what my battery was calibrated to according to the phone. Let it drain down to about 15% (according to the phone) and wiped the battery stats and did a different charging method from the htc "rain dance".
Here is where my opinion of the evo not charging properly comes into play.
From 15% to 100% charge (charged while phone and screen are on to monitor voltage, temp, mA draw, etc.) took about an hour +/- a couple minutes. As soon as the led turned green (yes, I literally sat at my phone watching the percent slowly rise) I unplugged the charger and noted the resting voltage level and percent (according to three seperate battery status applications). Once noted, I powered down the phone. After the screen completely shut off I removed the battery and tested the voltage. I did this for my own information because I wanted to verify the phone itself was actually reporting the voltage levels correctly. It was.
Now, recall that I had just charged the phone to 100% and had wiped battery stats prior to charging.
Replaced the battery back into the phone and powered up. Normally people see a jump in battery percentage when they power down and back up. Not in my case. To my amazement, the evo reported my battery as being at 78% charge level. So I went from being 100% charged down to 78% percent charge all from powering down, removing the battery, checking voltage, and then replacing battery and powering up. Time to power down, remove, check voltage, replace and power up is somewhere around the one minute mark +/-.
Again, referencing the link I provided earlier about charging li-ion batteries, the evo seems to skip stage 2 of the charging process which usually results in about a 70% charge (according to the link).
Charged it again from the 78% mark to 100% and the charging time took just over an hour to get back to 100%. Same routine, check voltage on phone, power down, remove battery, check voltage on mmeter, replace battery, power on, check levels.
Second time around I dropped from 100% charge to about 89%. Voltage levels were always accurate. Charged again and took about another hour +/- and finally achieved a charge to where it would not fall or rise between a power down (97% seems to be my cap which is fine since I don't want to truly charge the battery to 100%).
To test the discharge rate I tried my best to keep the battery running condition identical for each discharge run.
I monitored the battery temp, cpu temp, battery voltage, amp draw, and cpu load.
Streaming only pandora and nothing else I usually managed to keep the amp draw to around 300 - 360mA with the screen on. This was my way of measuring the discharge rate without access to equipment that could give the battery a steady discharge load.
Every time the percentage dropped one I would note the volts, temps, amp draw and cpu load. Across the board temps and cpu load remained close to constant as the phone wasn't doing too much multitasking.
At this point, I have about 4 full voltage readouts from 100% down to 15%. Without wiping battery stats, if I charge the phone with my method (charge to 100%, power down, remove battery, replace battery, power up and recharge) my past voltage readouts coincide with my battery readouts on the phone (87% falls within a certain voltage range and so on) but if I just charge the battery until the phone says it's 100% then the readouts on the phone no longer fall within my past readouts until I go back to my charging method. This tells me that if I let the evo charge the battery the way it is programmed to (hardware or software) then it is not actually charging the battery to its full potential (not necessarily 100%).
Across the board the cpu load and the temps rarely drastically changed as it wasn't running multiple tasks at once. This is just my own observations and tests that I did/started doing for my own intellectual reference.
I have done the same charging method with my wife's evo and stock battery (1500 htc oem). I wiped her stats but only managed to get two full voltage readouts with her phone. She has stated that her battery does last longer than before and she is only rooted to remove bloatware. She is running stock rom, stock kernel, no task killers, no memory managers, and her radios and settings are close to mine (she gets more mail and facebook notifications than I do).
Again, this is just my opinion and personal observations. I did this solely because I got tired of having to constantly turn things on and off just to use them. My past phones never had this problem and I don't think the evo should have to be babied just to get good battery life. I still believe it all lies in the charging system of the phone and not necessarily the battery (extended versus stock).

Hey, what battery conditioning did you guys do? There's a ton of different suggestions and I am wondering if one or two have finally been proven to not be placebo.

I decided to do the HTC charging method when I changed roms to cm6. I went into hboot after and wipe stats. Turned on and took about 20 minutes to get to 98% using internet. Anyways I let phone die. Plug it in and I have system monitory with history monitoring. So I go to bed, and wake up to expect 100%. Nope 80%. Checked the monitor and trickled from 80% to 70% for 2 whole hours. I did the HTC thing again for full charge. Repeated. Only charges to 80%!!!! I changed roms. Same thing.
Sent from my PC36100 using XDA App

martyzidek said:
I decided to do the HTC charging method when I changed roms to cm6. I went into hboot after and wipe stats. Turned on and took about 20 minutes to get to 98% using internet. Anyways I let phone die. Plug it in and I have system monitory with history monitoring. So I go to bed, and wake up to expect 100%. Nope 80%. Checked the monitor and trickled from 80% to 70% for 2 whole hours. I did the HTC thing again for full charge. Repeated. Only charges to 80%!!!! I changed roms. Same thing.
Sent from my PC36100 using XDA App
Click to expand...
Click to collapse
Your situation also points to my opinion that the charging system on the evo does not charge correctly. I am also thinking that the battery stats dont play a huge role but I still jave more monitoring to do.

I also prefer the constant-use benchmarks, and did one myself as well. Charge to 100% and then stream DI.fm using XiiaLive (96Kbps MP3) through WiFi (router in same room) + full brightness + screen ON (no timeout). My poor Evo lasted 3:55 before forced shutdown . Btw, running Fresh v3.1.0.2 with netarchy v4.1.8-cfs, no SetCPU or any other "battery saving" tools.

frifox said:
I also prefer the constant-use benchmarks, and did one myself as well. Charge to 100% and then stream DI.fm using XiiaLive (96Kbps MP3) through WiFi (router in same room) + full brightness + screen ON (no timeout). My poor Evo lasted 3:55 before forced shutdown . Btw, running Fresh v3.1.0.2 with netarchy v4.1.8-cfs, no SetCPU or any other "battery saving" tools.
Click to expand...
Click to collapse
I am at work now and when I get home I plan on charging the stock battery as best as I can and doing another constant use run to satisfy the crowd who run the stock battery.

Does Adaptive Fast Charging Reduce the Lifespan of your Device?

Silly question, but thought it would be good to ask nevertheless,
Does Adaptive Fast Charging Reduce the Lifespan of your Device?
How is the impact on the overall number of charge cycles for the removable battery?

it reduces the lifespan of your battery not your device. charging at anything exceeding 1C damages the battery. thats 1.5 hours for a full charge.
then again the battery is 30 bucks.

Let the battery drop to 2%, then let it recharge!
Over time, we all know that most batteries lose a lot of their useful juice.
>> I'd suggest making the battery life-life last longer, by letting the battery drop to 2%, then, recharging it fully! This is to avoid battery swelling in the phone, which may cause an internal damage to your phone's components :good:
Happy browsing!

VERSVCE said:
Over time, we all know that most batteries lose a lot of their useful juice.
>> I'd suggest making the battery life-life last longer, by letting the battery drop to 2%, then, recharging it fully! This is to avoid battery swelling in the phone, which may cause an internal damage to your phone's components :good:
Happy browsing!
Click to expand...
Click to collapse
Isn't that too low? Won't doing that actually reduce battery life in the long run? I've read that it's good to let it drop to 20% before re-charging it.

Analogy time!
jpbl1976 said:
Isn't that too low? Won't doing that actually reduce battery life in the long run? I've read that it's good to let it drop to 20% before re-charging it.
Click to expand...
Click to collapse
Let's imagine you were a phone that was used the whole day, and your batteries are down to 2% Let's say that 2% is your subconscious, to run all that extra information that's through your brain, telling you "Hey, you got extra (at 20%) a whole lot of space for new power juice!"
I know it's sounds like a very childish analogy, but I guess this is the best way I could've explained it :fingers-crossed:

Best information source on batteries:
http://batteryuniversity.com/
The batteries degrade as a function of discharge cycles (where 10 discharges to 90% are roughly the same as one discharege to 0%), time, temperature and charge.
Batteries age slowest when they are at 40%. That's why your out of the box battery is usually 40%, to prolong shelf life.
Batteries age faster the higher the temperature is - adaptive charging increases the temperature while charging more than normal charging, but not by much nor for a long time.
So no need to worry about anything. Charging from 2% is not better than charging from 20%.
Note, their article http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries does not take into account the adaptive charging technology, so the last graph is not really applicable in this case.

I don't like quoting batteryuniversity.. but this is pretty good analysis.. Depth of Dicharge is directly related to the overall longevity of the lithium batteries.. more you discharge.. the less cycles you're going to get..
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
but.. considering that these batteries are $30 bucks.. use them how you like.. just replace it when you start to "FEEL" that battery isn't holding the charge anymore.

The only thing that Samsung said about the Adaptive Fast Charging adapter is that you can charge 50% of the whole charge in only 30 minutes. They didn't say what tecnology they used or any warning of it. If you buy a phone, and it cames with the original charger which is aproved by the FCC and who knows what other organizations tested it, it means that you will not have any problem with the battery by using the original charger that comes with your device. Anyway, a normal smartphone battery only lasts it's original capacity for almost 2 years, after that, consider to replace it.

http://chargedevs.com/newswire/new-...age-lithium-ion-batteries-as-much-as-thought/

zurkx said:
it reduces the lifespan of your battery not your device. charging at anything exceeding 1C damages the battery. thats 1.5 hours for a full charge.
then again the battery is 30 bucks.
Click to expand...
Click to collapse
so how much "C" this adaptive charger Note 4 ?

As far as I know modern phones know how much juice is in the battery, and shut off well before the battery is empty to ensure no damage is done if you drain it completely.
With all my new phones I always run them till the turn off then fully charge them back while off up to 4 or 5 times, and in the past this has always improved the life of the battery.
I do not believe this improved the battery life of modern phones though, it's just a habit.
On the flip side, it's never damaged a phone or battery of mine.
As for charging currents and speed, i've always used used charger 1.5amp and above and never had a problem.

Where can I find an acceptable extended battery for Galaxy S3?

Galaxy S3 Neo has a ridiculous stock 2100 mAh battery which offers a very poor duration. That's the reason I need an extended one. I have tried lots of extended batteries of different brands such as DSK, Anker, and one that I don't know its brand, I bought it from http://www.tucargadorsolar.com/. All of it have offered me a very poor duration. They are supposed to have twice the capacity of stock battery but here are the results that I got with all of them:
Original 2100 mAh battery, 100% charged, holds for 5:30 hours on continuous video playing until it reaches 5%.
Different extended batteries (4200 to 4400 mAh depending on the brand), 100% charged, hold for 6:45 hours on continuous video playing and in exactly the same conditions of the other test (screen brightness, bluetooth, wifi...).
I have repeated the test lots of times and always get the same results. If an extended battery of 4200 - 4400 mAh has a double capacity and original battery holds for 5:30 hours, why the extended one does not hold for the double, 11 hours?
I suppose that I have been testing batteries coming from not reliable brands.
I ordered a battery from Mugen Power 3 months ago, because it is supposed to be a reliable brand. But 3 months later still know nothing about the order I've made, and now they don't answer my e-mails.
What can I do? Is there another brand which is reliable enough to offer me a good duration?
I am really annoyed with this, I have lost very much money and time and all batteries I buy are in a very bad condition.

Well you could just money to buy another phone Anyway, if you're on stock, I can't say much, but using a custom kernel with governors etc, it would be really a great option as with the default battery, it last way more longer.
It's really strange, really. Have you calibrated the batteries right by reading the manuals? Are you sure about the capacities (Have you tested them with a multimeter)? Have in mind (if you haven't already known that) that I9300 batteries are exactly the same, because it's wide known and there are for sure reliable sources. A phone like Neo, is easily targeted with fake things. Last, you should buy from Amazon and read the reviews. Oh, did you try to contact with the companies?
Again, it's very strange....

S3 neo's battery functionality is a joke...
I try a lots of extended batterys baut only one is in right...Anker 7200mah(buy from amazon)
But s3 neo have a "bug"...completly charge of ectended batery is possible just if you replace battery after first charge to "100%" and put on charge again...aproximately after replace cell, phone was display the true charging %...
After 2x 3x replaces battery was true 100% charged...
Discharging is same way....after first 1-2% level replace the batt....it shows aprox. 70% after....
Replace "trick" is only one way to use extended batterys capacity.