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I recently bought one of those Brando music docks for the k-jam, works great and charges the k-jam at the same time. Is it ok to leave the k-jam in the dock all night, even if it is fully charged? Will it degrade the battery at all? Does the wizard have any auto-stop charging mechanism built in to stop overcharging the battery?
Thanks.
Almost, if not all, electronics have microprocessors in their batteries and charger boards (in the device) to read the battery state. As a result, they will not charge the battery when it is full. That is an important safety feature as if you continue to send juice into a fully charged battery it can explode.
The Wizard, as with any electronic, will continously replenish lost power to the battery when it drops below 100% (to bring it back to 100%) and as a result you shouldn't leave it on the charger for extended periods (like a week or more) as the natural discharge rate will drop the battery level and kick in this charging.
So, to answer you question simply... No, there is no harm i leaving your phone on the charger all night. The right status LED will be solid green when charging is complete and you can just take her with you in the morning .
Thanks alot!! It looks so good in its dock...
my jasjar is turn off when it get to 40% buttery power , what can it be ? if i charge it it dosent turn off but without power charger it work just until 40% .
thanks in advance.
http://forum.xda-developers.com/showthread.php?p=1081974#post1081974
sometimes this is just due to topping up charges and there is not a "continuous" supply current in the battery at that 40% mark. I had it once but always top up whenever halfway or very low and never had problem, but a way to fix the glitch is to drain the battery and then fully charge it
Li-Ion batteries do not suffer from memory effect. I have read in several tech reports on Li-Ion technology that it is actually better to top up often, like a lead acid battery. If the battery goes into deep discharge conditions, this will potentially cause serious problems. Assuminb the protection circuits in the battery work, this shouldn't be an issue though.The main problem is that the cells oxidise and stop transferring the charge to the device. This starts as soon as they are made and can't be stopped. If the oxidisation between cells is bad enough, the only use you get is from cells one side of this barrier. The battery still reports charge because the other cells still have it but they can't be usedBottom line is that the battery is poor on the Uni and lasts less than a year.Get a new one from another source, Cameron Sinio or whatever they are called are usually good.
pug said:
Li-Ion batteries do not suffer from memory effect. I have read in several tech reports on Li-Ion technology that it is actually better to top up often, like a lead acid battery.
<...>
Get a new one from another source, Cameron Sinio or whatever they are called are usually good.
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Yeah I always put it into charger cradle when driving home -- nice way to keep it topped up.
Recently my battery started to play up and I have ordered one from BatteryUpgrade.com - a Cameron Sino battery for £18.xx has arrived quickly but could not serve the purpose - was not charging and eventually totally discharged.
Also was not indicating charge properly - always 100% (the LED is still Amber, not Green as you would expect at 100%).
I wonder if anyone else has bought Cameron Sino branded batteries and experienced same effects: 1) always 100% indication in your software and 2) lack of ability to charge?
Universal is using Lithium Polymer (light weight), not Lithium ion (heavy weight) batteries.
The main differences between li-ion and li-po batteries are the recharge/discharge rates and the construction of the core. Li-ion batteries are "wet" cells where as Li-Po batteries are "dry" which makes them thinner and more rugged. The same precautions still need to be observed and the life of the batteries is still about the same. They start becoming unusable after 300 charges and only have 40% of charge after 500 cycles. The life of 3 years is from the date of production, being stored at 40% charge and at the appropriate temperature. They are better when constantly topped up to prevent the voltage of the cells from dropping too low as this promotes oxidisation between the boundries of the cell. If they are overcharged, lithium metal is produced which is also bad. Another problem is that if the cell voltage drops too low it can never be recovered meaning one knackered battery. I have looked into this quite a bit as my battery has started shutting off at 60%ish, after 10 months of use which is pretty fair. I only expect batteries to last a year anyway. Good excuse to get a higher capacity battery in my opinion. I have used a Cameron Sino battery before in my Alpine and had those reporting issues for a few weeks and they dissappeared almost overnight. Don't know why but hey, isn't modern technology great?
Interesting. Thanks for you info. No wonder battery is not under gaurantee!
EastExpert said:
Yeah I always put it into charger cradle when driving home -- nice way to keep it topped up.
Recently my battery started to play up and I have ordered one from BatteryUpgrade.com - a Cameron Sino battery for £18.xx has arrived quickly but could not serve the purpose - was not charging and eventually totally discharged.
Also was not indicating charge properly - always 100% (the LED is still Amber, not Green as you would expect at 100%).
I wonder if anyone else has bought Cameron Sino branded batteries and experienced same effects: 1) always 100% indication in your software and 2) lack of ability to charge?
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Click to collapse
Yes, I've had 3 Cameron Sino batteries that all reported 100% regardless of charge level. Can't remember if the LED ever went green with them, or not, I'm afraid. Obviously, they all went back for refund.
Cheers,
Steve.
I got a CS battery and it started to expand, cracking the casing and seeming rather dangerous. I emailed the seller and it was replaced in 24 hours. He asked for theold one sent back so the factory could analyse it.
I had to dump the replacement recently because it wasn't giving the Uni enough current to complete a hard reset and was lockingup the device during 3G data and a call.
All in all I think 2 bad ones is enough, I will stick to the one that comes with the Uni and keep a USB cable curled up in my pocket =)
Hi guys,
I have really huge problem! When i connect my htc tytn to charger ( wall charger or usb, same thing) it drains battery ! There is orange light like it is charging, but it goes from 100% to 0 in an hour! Battery works fine... 2 - 3 days... and because i can't charge it over usb, i am using nokia charger, cut the wires, took battery out and connect + to +, - to - and that's how i charge it for the last few days! Does anyone has any idea why is this happening? I have wm 6.1 pays rom i think it is 3.05
Fire Hazard
i warn angst doing this as this could over charge the battery and when a Lithium Iron or Polymer is over charged they burst into flames or explode and spread nasty toxic chemicals every where. if this be the case it may be time to try a new rom and see if that fixes your problem, try someone elce's charger if this wont fix your problem it may bet time for a new mainboard as these have the charging circuit built in
lithium rechargeable are compact high energy storages devices, and if not charged properly become dangerous
I had charging issues with my 8125 - it would charge with the charger, but when I unplugged the charger (it would read 100%, say I charged from 52% to 100% or something), it would drop really low to like 25% or 23% - sometimes it dropped all the way, and I could no longer get the battery to charge because my travel charger was 500mA and the original charger was 1A - it didn't have enough power.
I had to give it a boost by using a 9V battery and twist ties - touching the battery like you are doing here. I did it for 15 seconds a couple times, popped it in, and it had enough juice to start charging. However, I wouldn't want to do this too long on it as the battery got warm pretty quick and I saw a glimpse of smoke at one point.
After being cautious and not letting it lose charge all the way again, after a few charges it seems to have improved. It no longer drops battery power when unplugging and seems to work as it should.
Not sure if yours drops when you unplug it like mine was, or if it steadily drains while plugged in. Anyways, I thought my charger was just wacked, but it is working fine now after a few charges and being careful and keeping a close eye on things....I also thought it was the battery, but I ordered a new OEM battery, popped it in, and when I unplugged the charger that battery dropped and lost power as well. Now I have two batteries and both seem to work ok, but I did have to play around with them a lot and it did take a few charges before they started working like they should again. I'm not sure what was going on, because it couldn't have been the battery (I replaced it with a new one), and now the charger is acting properly.
Granted, this is all with an 8125 which is older, but there may be something in common here. All I know is it does seem to be fixed and it didn't require any additional purchases or replacements.
sounds like the charging circuits are wacked, this could be caused by dry joints on the charger "smart" chip, but a little heads up with Li-Ion, they don't like gettin wet, (sweat included) once they have been wet they become a fire hazard, (ultramag69 help me out here, remember that one you gave me that was full of mud?!?).
they also don't like going below their threshold voltage of 2.1v per cell, (i think 2.1 for now) after that the battery becomes a resistor and is not worth trying to shock back into life with a 9V battery, as these have a protection circuit built in, as well once in this state they become another fire hazard, it may be worth buying a cheap $30 butane soldering iron with surface mount attachment and just going over some of the areas located round and on the opposite side of the battery, every thing under the silver covers is RF shielded and not worth trying to reflow.
just don't keep the heat on too long, as you may and will desolder components on the opposite side of the board.
other than that if the charger is giving +5 volts respective to its ground, its fine, the difference between the 1A and 500mA chargers is the rate at which its charges the battery, slower is better for Li-Ion due to battery construction for the life span of the battery (if you get more than 6 months out of one your doing good by manufactures standards)
heck even try checking the phones USB connector, it may be stuffed or shorted
When I got my Epic the battery was at 50% like expected. I immediately plugged it in when I got home and it seemed like it was charging because the charging light was on and the battery indicator was showing charge.
About 1 hour later I had to leave for class and I unplugged my epic. It stated it was 15% battery left and gave me the sad low battery notification.
I plugged my epic into the wall at school and let it charge a good 2 hours. Throughout the charge the battery would NOT GO ABOVE 15%. I finally unplugged it a few minutes ago, and STILL the battery is at 15%.
Is there any way to reset the battery stats or is this a faulty unit?? I called my radioshack nd they stated they can do a phone swap for me BUT THEY DON'T KNOW WHEN THEY WILL GET MORE EPICS IN. WTF. I obviously can't use a phone that won't charge..... I saw a similar problem on androidcentral forums, where someones epic wouldn't charge over 80%.
My radioshack lady said to take out the battery and reset the phone. I've done this 3 or 4 times and still the battery registers 15%.
Sent from my SPH-D700 using XDA App
I'm having the exact same problem except my phone always thinks the battery is at 0%. Even when plugged in to charge, the phone will still occasionally die. It's very likely that I'm just making some silly mistake though, as the Epic is my first Android phone.
I had on USB debugging but I don't think that should affect charging through usb. I don know what's wrong with the charging port or the battery. But its definately going DOWN. Now its blinking at 0% with no way to charge it.
I'm wondering if I let the battery die and try to charge it to see if it will fix the battery.....
Sent from my SPH-D700 using XDA App
Same issues until i plugged it into a wallcharger.. now im good
meaning a non usb charger
I have tried the usb wall charger that came with the phone, and also a generic microusb charger. Both light up the notification charging light, and then the battery shows the charging..... still won't go above 15%.
Argh!
Sent from my SPH-D700 using XDA App
easy fix guys....
be sure to use the original charger and usb cable.
plug in the charger to the wall, then plug the usb into the charger, then plug the phone into the usb....
follow these steps exactly and it should start charging......
(in the future, dont let your phone completely die)
PS: this issue affects ALL epics when they die completely so dont bother taking your phone into sprint. they will not replace it because the replacement would do the same. (2.2 should fix this..... its only a couple weeks away)
hope that helps!! ENJOY YOUR EPIC!!!
jbarajasp said:
easy fix guys....
be sure to use the original charger and usb cable.
plug in the charger to the wall, then plug the usb into the charger, then plug the phone into the usb....
follow these steps exactly and it should start charging......
(in the future, dont let your phone completely die)
PS: this issue affects ALL epics when they die completely so dont bother taking your phone into sprint. they will not replace it because the replacement would do the same. (2.2 should fix this..... its only a couple weeks away)
hope that helps!! ENJOY YOUR EPIC!!!
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I have tried this, charger into wall, then cable into charger, then usb into phone.
Still phone will not charge.
If I unplugg the charger, it says the battery is empty.
Sent from my SPH-D700 using XDA App
aww man that sucks, maybe the battery is defective? u should try going to the sprint corporate store that does repairs. they should be able to test the battery and if its defective give u a new one.Its still under warranty, and if u have TEP it definitely is covered.
My Epic was experiencing the same issue. When I first got it today, it was gradually charging fine via my new Thinkpad's USB port. But then for some reason, "Battery Indicator" showed the charge going down, even though the red LED and the battery icon indicated that the phone was being charged. So did my lock-pattern screen. I called my local store for a replacement.
The phone wouldn't charge while I had the rubberized phone cover on, bought from the Sprint store. Also, the phone felt very warm, so I took the cover off, opened the battery cover to see how hot the battery was. It didn't feel too hot to the touch. I removed the battery, put it back in, powered the phone back on, and saw a huge green battery charge icon, but alternating with an icon with what I think was a yellow warning sign, and a thermometer on it. So I left the Sprint rubberized phone cover off, and recycled the power on the phone.
After the phone fully loaded up, I tried USB-charging the phone. Now, it's gradually charging up (was down to 14%, now back up to 19%). The phone feels cooler, too.
I'm leaving the replacement option on the table in case my phone turns for the worst. I rely on the phone for work and business so can't be without a phone. Maybe I should reconsider getting a land-line or VOIP service again. But maybe, this being a brand-new phone, the battery needs to be cycled a few times before it stops acting unusually. I'll try the wall charger before I head to bed tonight, and see what happens tomorrow.
Here is my findings after putzing with it all day. I was using two chargers. Both griffin's. One was cigarette plug to usb with an output capacity of 1 amp. I also have a wall one that has a usb port and is meant for an ipad. They need lots of current to charge them and this one is capable of 3 amps.
Using the evo, both could charge it and run the phone at the same time. The battery percentage would always increase. With both of these chargers on the epic, even though the charge light would be red, if I was using the phone, it was not charging and it was pulling off the battery to run the phone.
This should not act like this. I have read that these screens are supposed to be more power efficient, but I don't notice that. I do not know if the power regulator in the phone is wimpy or not but I noticed that when I played something loud through the speaker, the screen backlighting would dim when the sounds peaked. Come on! An amp and a half battery in this phone should be able to handle that.
Here are some more observations. About three hours before I was to go home, I would either put the phone on the griffin wall charger when I was inside or I would put it on the griffin 12v adapter when I was in the car. Finally around 45 minutes before quitting time, the charging led went blue. I was mostly charging the last hour with the phone off. I turned it on but kept it plugged in. By the time the home screen came up and everything settled down, the battery would be at 95%. I was like wtf. I left it on until it charged up and the light went blue. The battery was at 96% at full charge.
I kept hitting it with the charger. Unplug it for a few seconds then plug it back in. I repeated this many times. I would also charge until blue then turn off and let charge until blue. I would follow that cycle for awhile.
Lastly, I left it turned on and charging but would unplug it for a few seconds then plug back in. The maximum % would inch higher and higher. I got it up to 98%. Then I noticed that when the screen came on to tell me it was fully charged, it was at 100 for maybe a second or two then it would drop to 98. I suspect the screen was causing the drop. All the time I have been typing this, I have gone from 98 to 90 while on wifi, screen minimum brightness and using hardware keyboard.
This was my battery and charging findings for today. Add this to the theories out there flying around.
I find that completely unacceptable if the phone can't charge if being in use....
I plugged it in the way mentioned earlier for about 30 minutes while I was waiting on a friend. The charge went up to 15% but 15% isn't gonna last me longer than a hour of use which isn't usable.
It stil won't go above 15%.... I'm gonna leave it alone for a hour and see if it will charge, but a phone that can't charge isn't of use to me.
And judging from what everyone says its not even a hardware error, if there are many people with the problem.....
Sent from my SPH-D700 using XDA App
is this a defect, or is this only isolated to some phones?
herbthehammer said:
Using the evo, both could charge it and run the phone at the same time. The battery percentage would always increase. With both of these chargers on the epic, even though the charge light would be red, if I was using the phone, it was not charging and it was pulling off the battery to run the phone.
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Click to collapse
Ive been testing finding battery charge of 2% every 10 min while connected to desktop charger Telanav enabled so somethings definitely wrong with your device.
I would take back asap swap for new
So I just got home and plugged my Epic in yet again. After about 30 minutes of charging my battery is at 20%.
Still way slow but the battery has gone above the 15% sliver of battery.....
I'm thinking its because the battery has to be conditioned... I'm gonna charge it for a day to see if the battery performance changes...
Sent from my SPH-D700 using XDA App
I'm gonna try turning off the phone while it's charging at night and see what happens. Or I could try the htc evo battery conditioning suggestion.
Full 8 hour charge on. Disconnect charger and turn off phone. Charge off for an hour. Turn on and wait a couple minutes then turn off and charge for a hour. I think maybe charging the crap out of it might condition the battery some.
Maybe kinda like filling your gas tank up until the lever pops. Then slowly keep filling until it pops again. Then push the rear of the car up and down and side to side to try and get the tank to burp out any air pockets. Then slowly top it off until it barely overflows the filler pipe. I know, stupid mental picture!
The only questionable thing I have is, after a "full charge" should I run the phone until it shuts off then give it another FULL charge? Some say yes, some say no. Each have their theories.
I noticed that the "Where" application was sucking down a tremendous amount of juice. There are multiple similar complaints for it in the Market. Uninstalled it, and now the phone is charging gradually and steadily.
@ 9:57PM, battery life = 36%. Now @ 10:25PM, battery life = 48%. I'm cautiously optimistic.
With Where installed, "Battery Indicator" displayed a voltage of <3V. After removing it, voltage is now a hair < 4V (3.945V is the latest refreshed value).
I will be following herb's suggestions for conditioning by maxing the battery out tonight. I think I'll run the phone down to 0% tomorrow, once it's fully charged to the hilt.
Even so, I still intend to exchanging this unit out because I'm also experiencing issues with the Back soft-button.
Considering encasing it in that Sprint rubberized casing tomorrow to see if it affects the battery life.
My Epic has no problems except for the battery being slow to charge, but i charged it to 80ish in about 2 hours.
If anything, I will try to switch it for a new battery.
I just thought of something that may be nothing. Did anyone, like myself, update google maps to 4.4.0? I am going to try something and see if it helps.
In battery use details, in the about phone under menu, what is your highest battery consumption? My display is pegged all the way and it is at 70%. The next closest is cell standy 14. Then browser is 9, system is 4, idle is 2 and os is 2. I'm going to remove the maps update. I read somewhere that some people suspected the update to eat battery.
I haven't updated the maps app. The screen and standby are the highest ive seen on power usage.
My radioshack wont have any more Epics in until Friday or later.... I'm gonna try to power cycle the battery (if I can leave it off for that long. )
I had given my Touch HD for replacing the digitizer. After it came back from the customer care center, I faced a problem with the battery. As soon as i plugged it in for charging, I noticed the orange light- that usually shows the charging mode. But after 6-7 seconds, the light goes off and the battery never gets charged. Even after I charged the phone for 4-5 hours, when i try to switch it on.. it says low battery and switches off. I visited the customercare again with the same problem. The person there said the battery was to be blamed and he ordered a new battery for the same. That poor battery never arrived, even after a good 20 days waiting. That is when i ordered it from UK. Now, I recieved the battery a week back and the same problem persists. I am sick of this cell now. I would be grateful to anyone who has a solution for this.
Regards,
Rakshith
Hi
Problem of the circuit device to be charged
If I were you, I'd buy a universal lithium charger. You can get one on eBay for as low as 2.80 USD. I would recommend an online company called bestofferbuy.com because it has several for under 2.60. My personal favorite one there is one shaped a penguin that can recharge either via USB or AC. It is available at:
http://www.bestofferbuy.com/universal-cell-phone-lithium-battery-charger-with-usb-power-port-ac-110v240v-p-26225.html
The charging USB dongle on my phone broke and when I asked a friend about his recommendation, he asked if I had searched for a universal lithium charger. I went to froogle.com, performed the search and found bestofferbuy.com. Basically, if you look at any universal lithium charger, it will have two posts that you "line up" with terminals on your battery. When the lithium charger senses a correct alignment, a light will come on. When charging, those lights will flash until the battery is fully charged. Then the lights will come on steady. I have bought two chargers from there as I like to keep one in my overnight bag.
If you do a search on eBay, I'd recommend you use "lithium charger" as it will show the lowest priced models. Then, look the sellers that offer a USB and a/c models. You should not pay over 2.80 USD (shipping included).