Database Users

Drain battery before charging?

I was wondering if everybody drains the battery to 0% before charging their HD2. I have done this the first 5 times or so now but am thinking that it isn't a big deal at this point?
What does everybody think?

I like to drain all of my devices before charging them. With my phones, I always let them drain until they won' t turn back on when I first get them for the first few charges, but that's it... I think you are good. Plus you can always buy a spare battery if it stops holding a charge. The HD2 over Iphone advantage!

Yeah that sounds like how I usually run my batteries ... I will drain them 100% the first handful of times. Then after that I just charge at night when it is lower.
I have been looking at the larger capacity battery with the kickstand. Might buy that as a spare. Does anybody have the external wall charger for this phone ... I saw it on a few websites. I wonder if it works with the larger battery too? Would be nice if you could charge outside the phone with a second one.

the drain/charge cycle was for nickle MH- batteries.
It's no longer necessary for Lithium ion batteries, cos they dont suffer from charge memory effect.. or at least thats what the science says.

samsamuel said:
the drain/charge cycle was for nickle MH- batteries.
It's no longer necessary for Lithium ion batteries, cos they dont suffer from charge memory effect.. or at least thats what the science says.
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Click to collapse
I agree.
But there's no harm doing it the old way. I've let my battery die completely before I plug in the charger. I think I've done it 6 times in the last 7 days that I've owned the phone.

Wall charger
NickPDX said:
Yeah that sounds like how I usually run my batteries ... I will drain them 100% the first handful of times. Then after that I just charge at night when it is lower.
I have been looking at the larger capacity battery with the kickstand. Might buy that as a spare. Does anybody have the external wall charger for this phone ... I saw it on a few websites. I wonder if it works with the larger battery too? Would be nice if you could charge outside the phone with a second one.
Click to expand...
Click to collapse
I bought a wall charger from Amazon and it was wigging my phone out for some reason. But went back to the USB charger but with a 6ft Extension and now its awesome! That little USB wall charger thing was just way too short!

kcaj32 said:
I agree.
But there's no harm doing it the old way. I've let my battery die completely before I plug in the charger. I think I've done it 6 times in the last 7 days that I've owned the phone.
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Click to collapse
oh absolutely, i still try run it a good way down now and again, , old habits and that.

If you guys want great battery life, charge your battery in a TP2

That's right... For some stupid reason, our phones don't detect when the battery is ACTUALLY full. Getting annoyed with the having to charge my phone twice a day, I stuck my battery in my old Touch Pro 2 (left it powered off) and plugged it in... It took about 5 hours for it to fully charge and I let it sit for another hour.
I took it off the charger at 11AM... It is now 11PM and I'm at 68% and I've been doing more browsing and downloading than usual. Previously, I would have hit 20% by now and had to plug in the charger.
Once you charge the battery in this manner once, it should be fine from there because the cells have been fully charged for the first time. As long as you don't drain the device completely, you shouldn't run into battery issues.

Ordered a multi-function battery charge and two aftermarket TP2 "1500mAh" batteries from eBay, all for $11, hopefully they're good

I've been pounding the hell out of this thing today... I've racked up 8 hours of "active" usage... so actually I've used my phone more than normal.
The first clue for me was the fact that my battery didn't drop from 100% to 90% in five minutes like it was before... It would usually drop to 80 within an hour, even on standby...
It was at 92% when I got to work at noon.

Unreal, I never thought I would search ebay for a phone with a BAD esn

What I think is unreal is that our 2010 devices can't do something other devices have been able to do since 2006... AT LEAST 2006...

I'm running fresh .3 and I've had the phone unplugged for 1d 0h 15m and still have 30% left... so I don't have an issue with the battery at all.

EtherealRemnant said:
What I think is unreal is that our 2010 devices can't do something other devices have been able to do since 2006... AT LEAST 2006...
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I have an IPAQ Pocket PC from 2002 that detects and charges its lithium battery just fine!

Plancy said:
Ordered a multi-function battery charge and two aftermarket TP2 "1500mAh" batteries from eBay, all for $11, hopefully they're good
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Click to collapse
I have two of these chargers and 4 batteries. I keep two at work and two at home.
These chargers top the battery completely off. I can take a battery that is "fully charged" in the phone and put it in the charger and it will still need 20-30 minutes of charging. The batteries off the charger will stay at 100% for up to 20 minutes, the ones charged in the phone plunge within 1 minute for me.

I really hope this issue can be fixed with a software update. Charging once a day is one thing, but having to take the cover off, battery out and reboot every morning is not acceptable. Not to mention that I rely on my phone while it is charging for emergency calls.

ramiss said:
I really hope this issue can be fixed with a software update. Charging once a day is one thing, but having to take the cover off, battery out and reboot every morning is not acceptable. Not to mention that I rely on my phone while it is charging for emergency calls.
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Click to collapse
AFAIK it affects all HTC Android devices. HTC is lazy. Anyway I even put my old TP battery which hasn't been charged for at least 6 months in and charged it with the TP. It appears the first 5% is dead but it is still kicking ass and taking names over the charge I get from the evo.

myth_mn said:
I'm running fresh .3 and I've had the phone unplugged for 1d 0h 15m and still have 30% left... so I don't have an issue with the battery at all.
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Click to collapse
Your battery was probably charged to capacity before they sold you the phone. Once a lithium ion battery has been charged to 100% it maintains its charge unless you screw it up by running it down to empty a few times. The problem is that for whatever reason HTC didn't see fit to charge all batteries to their max first even full well knowing that they won't get conditioned properly by the phone.

EtherealRemnant said:
AFAIK it affects all HTC Android devices. HTC is lazy.
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Click to collapse
Er...the TP2 is an HTC device though!
EtherealRemnant said:
I stuck my battery in my old Touch Pro 2 (left it powered off) and plugged it in...
I took it off the charger at 11AM... It is now 11PM and I'm at 68% and I've been doing more browsing and downloading than usual. Previously, I would have hit 20% by now and had to plug in the charger.
Once you charge the battery in this manner once, it should be fine from there because the cells have been fully charged for the first time. As long as you don't drain the device completely, you shouldn't run into battery issues.
Click to expand...
Click to collapse

danknee said:
I have two of these chargers and 4 batteries. I keep two at work and two at home.
These chargers top the battery completely off. I can take a battery that is "fully charged" in the phone and put it in the charger and it will still need 20-30 minutes of charging. The batteries off the charger will stay at 100% for up to 20 minutes, the ones charged in the phone plunge within 1 minute for me.
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Click to collapse
Did you buy from tuttoit on eBay?

Plancy said:
Ordered a multi-function battery charge and two aftermarket TP2 "1500mAh" batteries from eBay, all for $11, hopefully they're good
Click to expand...
Click to collapse
I did too, but think mine is defective. The batteries are pretty good for backup purposes and do their job. My wall charger sucked though. I had a Droid Eris hooked up via USB and a battery on the charger. After about an hour and a half, the Eris charged fine, but the battery was like at 30%.
Now the deal breaker is when I got home. I tried to charge a battery and my EVO via USB. When ever I hooked up the USB my phone litterally lagged almost would freeze to a point. I removed the USB cable and phone worked fine. So in all my charger sucked and can charge the battery but really slow.
I ended up just charging the batteries with the OEM charger and EVO turned off.

ramiss said:
Er...the TP2 is an HTC device though!
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Click to collapse
Yes, but an HTC Windows Mobile device, not Android.

I think OP is talking about the TP2 OEM battery, not some knock off that you buy off ebay. FYI there are tons of battery for TP2, so it would have been better if the OP can tell us exactly which one he got. Check out batteryboss for comparsion:
http://batteryboss.org/

Could there potentially be a software fix to make the evo handle battery management better, like the tp2?

nebenezer said:
Could there potentially be a software fix to make the evo handle battery management better, like the tp2?
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Click to collapse
I am dying for Lumos on my EVO. I don't think the auto brightness control works for crap on my phone.

lettcco said:
I think OP is talking about the TP2 OEM battery, not some knock off that you buy off ebay. FYI there are tons of battery for TP2, so it would have been better if the OP can tell us exactly which one he got. Check out batteryboss for comparsion:
http://batteryboss.org/
Click to expand...
Click to collapse
Actually i was talking about putting your evo battery IN a touch pro 2 in order to charge all the cells.

So this is the reason why the EVO appears to be charging its battery so fast. I plugged it in, and it takes less than an hour to start beeping "I'm full."
......Because it's not really full.
That would explain why I was about to sleep, the EVO was charged, and I got an email, so it kept beeping every 10 minutes or so. which was annoying. I had to unplug it so I could sleep. I slept only 7 hours, and I heard the phone on the little table beeping again like crazy in the morning. I checked what it wanted, and it was the super warning that the battery was about to die.
No use at all in 7 hours, and the battery went from "fully" charged to almost ZERO.
I was almost crying of laughter. I just thought what a piece of junk. Hopefully I'm wrong.
----
Now, let's watch the soccer game, let's see how the USA does.

T-Mobile HD2 takes too long to recharge the battery

Hello folks, I am very concerned with my HTC HD2 as it takes like over 4 hours to fully recharge the battery. I have got this HD2 from the market here on XDA and it works very good overall, except for this problem when recharging it. I thought it was the charger and I have tried many usb to wall chargers even the the iPhone's 4 one, but nothing has changed.
I have also tried several roms and kernels but nothing has changed on this side as well. I wiped everything and put back win mobile 6.5 T-mobile stock rom, but hey, no difference here too..
I am wondering if there might be something wrong with the phone itself or can it be the battery going in holiday???....
How can I figure this out???
I have downloaded Battery Doctor from the market and it says the battery is in good health, and I get up to 14 hours with a full charge with mytouch 4G rom and kernel rafpigna 1.7 cpu 1.3Ghz OC.
Is anyone else experiencing the same problem ??? do you guys have any suggests ???
This problem is driving me really crazy...

Get a new battery, mine only takes 2 hours when completely dead.

mattfmartin said:
Get a new battery, mine only takes 2 hours when completely dead.
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Click to collapse
You think is the battery?? but I get up to 14 hours of usage, I am not sure if its that good though, but I heard this phone is a sucky battery, and anyways why Battery doctor says the battery is in good health ??
Anyways I was thinking to get the battery extended 2300mah
How many hours does your battery last???

Are you using the original HD2 charger? I have tried many different chargers and they always charge at a different rate. It has to be that, not the battery.

secano said:
Are you using the original HD2 charger? I have tried many different chargers and they always charge at a different rate. It has to be that, not the battery.
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Unfortunately it came with its original charger broken and I have never had the pleasure to try with it.. Anyways I am using a charger that has the same specs of the original one, which is the usb charger of the iPhone 4, and yea same result ...
I have downloaded currentwidget from the market and it gets less than 200mA of current in, when it usually should get around 400mA, sometimes the value goes down to 200mA as well, which makes me really wonder the problem might be the usb port of the phone .
Does a broken battery does that as well??

Segnale007 said:
Unfortunately it came with its original charger broken and I have never had the pleasure to try with it.. Anyways I am using a charger that has the same specs of the original one, which is the usb charger of the iPhone 4, and yea same result ...
I have downloaded currentwidget from the market and it gets less than 200mA of current in, when it usually should get around 400mA, sometimes the value goes down to 200mA as well, which makes me really wonder the problem might be the usb port of the phone .
Does a broken battery does that as well??
Click to expand...
Click to collapse
I think it has to do with the charger you're using . When I charge mine I usually see anything from 500+mA to 700+mA on my battery monitor widget depending on how much charge the battery has, and like Segnale007 said it usually takes about 2 hrs to fully charge.

Segnale007 said:
Unfortunately it came with its original charger broken and I have never had the pleasure to try with it.. Anyways I am using a charger that has the same specs of the original one, which is the usb charger of the iPhone 4, and yea same result ...
I have downloaded currentwidget from the market and it gets less than 200mA of current in, when it usually should get around 400mA, sometimes the value goes down to 200mA as well, which makes me really wonder the problem might be the usb port of the phone .
Does a broken battery does that as well??
Click to expand...
Click to collapse
I can't say it's the battery cause you say it lasts you 14 hours, usb port? maybe. Your battery is good for it to last that much (on averge usage of course). It's the different charger that you're using.

roloracer said:
I think it has to do with the charger you're using . When I charge mine I usually see anything from 500+mA to 700+mA on my battery monitor widget depending on how much charge the battery has, and like Segnale007 said it usually takes about 2 hrs to fully charge.
Click to expand...
Click to collapse
The charger I am using its the iphone 4 charger and just like the original one its a 100-240V ~ 0.2A 50-60HZ , which I have no idea about what it means, but I can guarantee u its the same ..
So, what charger do you suggest me to buy?? I wish it was everything except the phone ...

Segnale007 said:
The charger I am using its the iphone 4 charger and just like the original one its a 100-240V ~ 0.2A 50-60HZ , which I have no idea about what it means, but I can guarantee u its the same ..
So, what charger do you suggest me to buy?? I wish it was everything except the phone ...
Click to expand...
Click to collapse
That's your issue there, 0.2A (aka 200mA).
The UK HD2 charger for example, is 1A (aka 1000mA).
To work out the maximum time it should take to charge the battery:
(capacity x inefficiency factor) / charging current
(1230 x 1.15)/200 = 7 hours
(1230 x 1.15)/1000 = 1.4 hours

xaccers said:
That's your issue there, 0.2A (aka 200mA).
The UK HD2 charger for example, is 1A (aka 1000mA).
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Click to collapse
Oh gosh, so ur basically telling me its the charger I am using what is ****ing up with the slow charging ???
Can you please point me at a good one???
I am totally ignorant about electricity and stuff like that ...

That charger only delievers 0.2 A which is 200ma , you need at least a 500ma charger, mine is a 1 A ( 1000 ma ) and its quite normal to see a 700 ma rate while charging..
Sent from my HTC Desire HD using XDA App

Segnale007 said:
Oh gosh, so ur basically telling me its the charger I am using what is ****ing up with the slow charging ???
Can you please point me at a good one???
I am totally ignorant about electricity and stuff like that ...
Click to expand...
Click to collapse
Take a look on ebay or any local phone shop/online phone accessory shop.
You want a micro usb charger that has an output current of at least 500mA/0.5A
The original HTC ones are 1000mA.
Blackberry ones I've seen are 700mA so they're good enough.
200mA isn't a problem, it won't damage your battery, in fact it will live slightly longer as it's being put under less stress when charging, but don't use your phone while you're charging with it as you'll be drawing more current than the charger can supply.
So for instance, if you wanted a car charger so you could use the phone as a satnav and talk via bluetooth, you'd need a 1A charger to cope with the drain on the battery.

xaccers said:
Take a look on ebay or any local phone shop/online phone accessory shop.
You want a micro usb charger that has an output current of at least 500mA/0.5A
The original HTC ones are 1000mA.
Blackberry ones I've seen are 700mA so they're good enough.
200mA isn't a problem, it won't damage your battery, in fact it will live slightly longer as it's being put under less stress when charging, but don't use your phone while you're charging with it as you'll be drawing more current than the charger can supply.
So for instance, if you wanted a car charger so you could use the phone as a satnav and talk via bluetooth, you'd need a 1A charger to cope with the drain on the battery.
Click to expand...
Click to collapse
Alright thanks, will let you know

Segnale007 said:
You think is the battery?? but I get up to 14 hours of usage, I am not sure if its that good though, but I heard this phone is a sucky battery, and anyways why Battery doctor says the battery is in good health ??
Anyways I was thinking to get the battery extended 2300mah
How many hours does your battery last???
Click to expand...
Click to collapse
With very, very light use about 55 hrs. That's not extended.

Alright, my dad has managed to temporary fix its original charger and I can confirm there's nothing wrong with the battery and the phone itself. It gets beyond 800mA with the original charger and fully recharge the batter within an hour and half, which is great..
Ok now I have to find a compatible USB to wall charger with the same frequency.
Since its a T-Mobile US HD2 its original charger is american, and since I am in Italy I'd get an Italian standard wall charger. Does the Italian HD2 original wall charger has the same frequency of the american one??
Thanks

xaccers said:
Take a look on ebay or any local phone shop/online phone accessory shop.
You want a micro usb charger that has an output current of at least 500mA/0.5A
The original HTC ones are 1000mA.
Blackberry ones I've seen are 700mA so they're good enough.
200mA isn't a problem, it won't damage your battery, in fact it will live slightly longer as it's being put under less stress when charging, but don't use your phone while you're charging with it as you'll be drawing more current than the charger can supply.
So for instance, if you wanted a car charger so you could use the phone as a satnav and talk via bluetooth, you'd need a 1A charger to cope with the drain on the battery.
Click to expand...
Click to collapse
Couldn't said it better..
Sent from my HTC HD2 Gingerbread using XDA App

I have the same problem but with Htc touch 2(Mega)-I know that this isn't Mega forum but i couldn't find any solution there,so i write here my issue-.It takes too much to charge my Touch 2 (around 9-10 hours) with the AC power.On the charger its writen:Input:100-240~0.3A(0,3A)50-60Hz,Output: 5V-1.0A(1,0A)MAX.DO I have the same problem,I need to change the charger?Thank you!

My T-Mobile's battery recharced 3 ours. not 4 ours or more. My charger is original.is there any problem with my battery

[Q] Help, Please! Changing is soooooo long.

To full chagne the battery, need more than 10 hours. Tried different ROMs, Batteries, changers, cables. the same result.
It looks like a hardware issue...... but....
when I used a DC power supplier(5.2V, limit to 1A) and plug in the cable, it appears the DC current is 0.5A, and after 10 second, fall down to 0.1A. at least, in the first 10secend the hardware worked all right...

Do you use the original OEM charger ?
Have you tried a different charger ?
How old is your Note ? Have you tested a different battery too ?

azzledazzle said:
Do you use the original OEM charger ?
Have you tried a different charger ?
How old is your Note ? Have you tested a different battery too ?
Click to expand...
Click to collapse
Tried different ROMs, Batteries, changers, cables. the same result.

I was quite surprised when I switched to the Note from the Dell Steak. My old phone would charge much quicker. The Note takes about six hours to fully charge I'd say. As a result I plug it in pretty much whenever I can.
- - Sent from my phone using technological wizardry

Yeah, Mine can take around 5+ hours too if im charging it from <5%
Bear in mind that it is a bigger than normal battery, 2500mah.
But if it is like you say, Taking 10+hours to charge, Id get it looked at, Maybe send it off for repair or something.

NiceMrMustard said:
As a result I plug it in pretty much whenever I can.
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Click to collapse
Isn't it bad to constantly charge your phone even when it still has battery?
I heard it reduces the battery's life span.

I dont believe it is, I often charge mine even when its got plenty of juice left.
It may reduce life span, But the battery will live longer than the time you will own the phone so i guess it dont matter

No one can help. feel bad.
I saw sevral links saying same problem, but no solutions... poor us...

little-vince said:
Isn't it bad to constantly charge your phone even when it still has battery?
I heard it reduces the battery's life span.
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Click to collapse
From what I've read, it's what you're supposed to do with the current generation of batteries. But then there's so much crap floating about about batteries it gets hard to figure out what is reliable info.

And this is with the original charger? If it's not an official charger, there's a big chance the phone will draw only what's usually allowed across USB. Which isn't much... In fact, with USB, the power draw of GPS/screen on/games can make your phone discharge even with the charger on. So try the official charger, on AC power.

Same problem...
I have the same problem.
At the beginning, about 3 months ago, my SGN works fine, battery are charged to 100% in 2 hours maximum.
I'm buy the phone from a Samsung Store, all accessories are originals. Today I send my phone to the technical assistance and there's no problem with battery or the charger.
My problem stars about 3 weeks, with an alert about different voltages after a full charge, the problem was solved only removing the battery and waiting an hour. At the technical assistance, the answer was to charge the phone when it's shutdown.
I already try that, format the cache, rebuild the system, everything using the ICS LQ3 from Baltic.

leandroaps said:
I have the same problem.
At the beginning, about 3 months ago, my SGN works fine, battery are charged to 100% in 2 hours maximum.
I'm buy the phone from a Samsung Store, all accessories are originals. Today I send my phone to the technical assistance and there's no problem with battery or the charger.
My problem stars about 3 weeks, with an alert about different voltages after a full charge, the problem was solved only removing the battery and waiting an hour. At the technical assistance, the answer was to charge the phone when it's shutdown.
I already try that, format the cache, rebuild the system, everything using the ICS LQ3 from Baltic.
Click to expand...
Click to collapse
Is the problme solved after remove the battery for 1 hour?

paddyzou, the problem with the wrongs voltages, yes, my steps to solve this:
- Full discharge
- Shutdown of the phone
- Remove the battery for 1 hour
- Full charge with the phone hang out
The problem with the low charge I think that was okay, it's seen to be happen in random times, I just flash another LQ3(France) version of ICS yesterday and seems to be working fine.

leandroaps said:
paddyzou, the problem with the wrongs voltages, yes, my steps to solve this:
- Full discharge
- Shutdown of the phone
- Remove the battery for 1 hour
- Full charge with the phone hang out
The problem with the low charge I think that was okay, it's seen to be happen in random times, I just flash another LQ3(France) version of ICS yesterday and seems to be working fine.
Click to expand...
Click to collapse
appreciate you so much. Hope it works.

Mine takes around 2 hrs to fully charge the battery. I use supplied samsung charger.

NiceMrMustard said:
From what I've read, it's what you're supposed to do with the current generation of batteries. But then there's so much crap floating about about batteries it gets hard to figure out what is reliable info.
Click to expand...
Click to collapse
This is correct, a chemical reaction takes place while the battery is discharging and is reversed when charging(changing). The chemistry of the battery changes how they hold energy. The Lithium ion batteries in our phones can be charged any time, they have no "memory" characteristics like previous rechargeable batteries (NiCd).
OP, it sounds like your charger is going. My stock HTC charger (2-3 years old) now only charges at about 40% the speed, which means the phone will discharge while its plugged in. I recommend grabbing one of those tiny square usb chargers (1A 5v, not 0.5A). I got one for like $6, as long as its 1A it will be quick.

[Q] Galaxy S4 first charge?

Hi everybody. Probably many peoples asked this question before, but I see a lot of thread about that and they all answer different things. I want to know if it's real that I have to plug my phone once he got 100/100 and I let him discharge at 0 before I plug in to recharge completly.
I want also to know if it's dangerous for the battery to let the phone plugged in all night
Thank you and sorry if you got a lot of topic about that

No and no. This advice refers to nickel hybrid and cadmium batteries which haven't been used in phones for 10years now. Sure you should charge to 100 sometimes as it helps accuracy on the battery indicator but you gain nothing by discharging completel . In fact your phone will show 0 when there's still a little juice left because it's harmful to completely empty lithium batteries.

Alrightt finally a clear answer thank you.
Sent from my SGH-I337M using xda app-developers app

For the past decade, I've taken the phone out of its box and used it.
Mostly theres about 60% in it.
I just use it and go.
If the battery performs adversely, I just buy a new one.
Life is too short to baby'ing batteries.

yup, batteries are dirt cheap.

Take my advice.
Avoid third party crap.
I had the experion or something that was total garbage.
I actually bought two and a dock.
By the end of the second month they were acting weird.
Showing me 5% battery left after a full charge but staying on for 10 hours.
Turning off for no reason.
Stick to OEM.

CorruptedSanity said:
Take my advice.
Avoid third party crap.
I had the experion or something that was total garbage.
I actually bought two and a dock.
By the end of the second month they were acting weird.
Showing me 5% battery left after a full charge but staying on for 10 hours.
Turning off for no reason.
Stick to OEM.
Click to expand...
Click to collapse
Agree with this. Here in the UK it's £40 for the OEM battery and stand/charger - I ended up buying a £4 battery (listed as 2800mAh) and a £13 cradle - the battery is lucky to give me 5 hours on full charge.
As mentioned in here, new battery technology does not need a full discharge - it's better to keep it hovering around 80% if possible (which is impractical of course)
The more "discharged" batteries are the more wear they get when you recharge them I believe - Keeping your battery on the higher end of 50% is preferable for long life, but no matter what they'll run down eventually!