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Fellow universal users who suffer from battery problems, i know this issue is reccuring and is in many threads and forums now. However i am sorry to increase the talk in another thread. I just thought i would share my peice of advice.
Attached is a pic of the universal battery and below is a little procedure that you might wanna try.
Lets say your universal battery is dying after 10 mins and you just had charged it overnight (meter says it died at 95% or whatever.. ) here is what you do.
1- take the battery out locate the pin provided in this pic attached. its the second pin from the top if you are holding the battery with the connector being to the upper right corner (just see the pic)
2- cover this pin with a thin peice of tape that you will leave temporarily. till the battery fully dies.
3- turn your universal on after placing the battery in it again
4- change the power settings in a way that leaves the universal on for all the time unless you manually turn it off.. so all the power savings are off.
5- let your battery drain all the way until it just turns the universal off.
6- take the battery out and remove the insulation from that pin
7- turn your universal on again and let it charge overnight or till the light turns green.
8- this fixed my universals' battery and now mine turns off at 5%
p.s. while the universal is running and the pin is insulated you will notice that the battery indicator that shows the percentage left doesn't work. (thats the whole point making the ppc blind and not being able to read how much is in the batter and take full advantage of whats in it as far as power goes, this will make the battery realize that it was drained more than usual and forces it to recalculate or recalibrate itself.
by the way you will also notice that the universal wont be able to get charged while that pin is insulated. so again my advice is fully charge your battery , take it out, insulate the pin then drain it all the way , take the insulation out and recharge until light is green.
please post if you had a successful result and hopefully for all who are suffering from this battery problem now they have one more hope.
This is what they call "Resetting" or "Formatting", nad while it's good for NiMH and neccesary for NiCd batteries, it can actually prove harmful to the LiION battery of the Universal, since it may over-deplete the battery.
Use with care, and only if you can't afford a new battery, since this might leave you without a battery!
Deeply discharging of Lithium Batteries
People may remember the videos of burning Dells and Macs. Deeply discharging lithium cells puts them into a critical stage. You may loose a bit more than only the battery ...
well its not deeply discharging
i monitored mine and was playing games on my uni until it turned off once it did then i took the tape out and fully charged it.. then viola it worked fine. i dont see any risk plus yes there is in the lithium batteries a problem similar to the nicad research about it and verify.. anyway you dont have to follow, just saying this worked on 3 of my batteries.
Cheers
NiCd yes, but those are of a completely different architecture. There's something called the Memory effect there, which means that the battery retains the previous charge as the threshold for the next charge, meaning they can't be "topped up", because then only the "top-up" can be drained from the battery.
Lithium Ion batteries retain this memory effect too, that's true. But in them, this is nearly insignificant, meaning the can be topped up at any time, even at 99%, and the almost full charge can be drained. Almost, because there is a minimum threshold beneath which the internal mechanism changes and the battery becomes unusable.
That is why I recommend against deep-discharging the batteries. What I did once was ordered a battery, and noted that it came with a six-month warranty. Now I get a new battery on the warranty(free) every six months, regardless of the state of the old one. But usually by then it startsx to show signs of weakness...
i will try this swith my old bat after my new bat is here. thanks for the fix
greets
Juun said:
i will try this swith my old bat after my new bat is here. thanks for the fix
greets
Click to expand...
Click to collapse
no problem, how did it work out guys.. anyone tried it yet
?
mzalan said:
Lithium Ion batteries retain this memory effect too, that's true. But in them, this is nearly insignificant, meaning the can be topped up at any time, even at 99%, and the almost full charge can be drained. Almost, because there is a minimum threshold beneath which the internal mechanism changes and the battery becomes unusable.
Click to expand...
Click to collapse
Unfortunately, the Memory Effect in Li-Ion batteries can be made worse if the battery is of low quality and/or has impurities in it (due to manufacturing or age). This is why our original, top quality, batteries are dying (due to age) and the cheap ones we buy off ebay are pretty bad (low quality)
mzalan said:
That is why I recommend against deep-discharging the batteries. What I did once was ordered a battery, and noted that it came with a six-month warranty.
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Click to collapse
I second that. This may be a fix, but be careful!! As with anything in these forums, it caries its own risks.
Probably best just to buy a battery from a respectable shop\dealer and get a warranty with it...
hey guys ... i´ve tried it ...
i think it works, give it a try.
takes 4-6 hours to completely discharge, the i´ve loaded it one night long. today i´ve played long time with my colegues at work, used bluetooth several times, hat some calls... and now, after 10 hours without charging it has 45 % of charge.
at the moment i turned the brightnes to the maximum, with wifi, beam, phone and bluetooth on, to see at wich percent my universal will turn of.
i give you a notice if this happens.
cheers
now ... finaly it turns off at 19 % !
but ... without any warnings or notifications...
but before it always was shutting down at 40 %, now with shutdown value at 19% the battery is more useful as before.
maybe it could help someone.
cheers
Didn't work form my orginal battery.
pa3x said:
Didn't work form my orginal battery.
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at what percentage does your battery turn off ? try it again does your battery last longer with the tape on?
webmin said:
now ... finaly it turns off at 19 % !
but ... without any warnings or notifications...
but before it always was shutting down at 40 %, now with shutdown value at 19% the battery is more useful as before.
maybe it could help someone.
cheers
Click to expand...
Click to collapse
sounds great try to guve it another shot if you want .. fully charge it and then put the tape on until the universal turns off . maybe you will get closer to zero like i did and if not then.. meh 19% isnt that bad compared to people shutting off at 40 and 80 ...
the only reason i came up with this method was because i read in the wiki that some pople discharged using led or whatever to depelte tha battery or even on bootloader. i thought about it in a way that would make mnore sence using the device itself to deplete its own battery (think about the ammount of power tha led will be drwaing vs the amount the ppc will be drawing ) maybe the chip in the battery claiberates itself on the ammount of draw ... most likely not but it crossed my mind like that so i gave it a shot and it seems to be an exploration by surprise
cheers
dj_gabzz said:
at what percentage does your battery turn off ? try it again does your battery last longer with the tape on?
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Click to collapse
With or without tape on 96%
dj_gabzz said:
well its not deeply discharging
i monitored mine and was playing games on my uni until it turned off once it did then i took the tape out and fully charged it.. then viola it worked fine. i dont see any risk plus yes there is in the lithium batteries a problem similar to the nicad research about it and verify.. anyway you dont have to follow, just saying this worked on 3 of my batteries.
Cheers
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Click to collapse
It sounds very much like "deeply discharging" to me - you are disabling the sensor which is also the failsafe circuit!!! The sensor is not there just to "annoy you" by shutting off early, it's there for safety reasons!
All Lithium ION batteries shut off quite a bit BEFORE they are fully discharged. This is because a truly 100% discharged Li-ION battery (or even close, like 95%) becomes unstable, and this can cause it to set on fire, leak acid, and even violently explode causing you serious injury or burning down your house (people have actually been killed by exploding Li-ION batteries). This is rare yes, but it does happen and it has happened.
We all know that the sensor in some Li-ION batteries can lose its calibration over time, though this is NOT due to a "memory effect", NiCD batteries were the only chemistry which suffered from that problem. But you have no way of knowing if the sensor is really de-calibrated, or it is shutting off because of a fault with the battery, or even that the battery is just nearly dead.
For gods sake people please be careful, this hack may look "cool" and yes it probably will work on quite a few batteries, but it can also be extremely dangerous, and is just not worth the risk, especially when you can get a new battery for less than $20!
Check out these videos to see how violent and extreme a Li-ION explosion can be...
http://www.youtube.com/watch?v=k5f0VCoFuFM
http://www.youtube.com/watch?v=QJCZ4ayioCU
sl9 said:
It sounds very much like "deeply discharging" to me - you are disabling the sensor which is also the failsafe circuit!!! The sensor is not there just to "annoy you" by shutting off early, it's there for safety reasons!
All Lithium ION batteries shut off quite a bit BEFORE they are fully discharged. This is because a truly 100% discharged Li-ION battery (or even close, like 95%) becomes unstable, and this can cause it to set on fire, leak acid, and even violently explode causing you serious injury or burning down your house (people have actually been killed by exploding Li-ION batteries). This is rare yes, but it does happen and it has happened.
We all know that the sensor in some Li-ION batteries can lose its calibration over time, though this is NOT due to a "memory effect", NiCD batteries were the only chemistry which suffered from that problem. But you have no way of knowing if the sensor is really de-calibrated, or it is shutting off because of a fault with the battery, or even that the battery is just nearly dead.
For gods sake people please be careful, this hack may look "cool" and yes it probably will work on quite a few batteries, but it can also be extremely dangerous, and is just not worth the risk, especially when you can get a new battery for less than $20!
Check out these videos to see how violent and extreme a Li-ION explosion can be...
http://www.youtube.com/watch?v=k5f0VCoFuFM
http://www.youtube.com/watch?v=QJCZ4ayioCU
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Click to collapse
thanks you for the info.
i dont mean to harm noone.. i just tried it and it worked for me and thought i would share.. for all future readers. dont take risks if this is really true..
a new battery for 20 $ ? where ?
in germany you have to pay nearby 50 -60 $ for a new battery, and you never know if it is a good one or some old crap.
for that reason i will try to maximise the life of my battery ...
webmin said:
a new battery for 20 $ ? where ?
in germany you have to pay nearby 50 -60 $ for a new battery, and you never know if it is a good one or some old crap.
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Click to collapse
Or you get new crap
hehe yes, thats true.
****! It worked on my UNI. I've used my original battery which is about 2 to 2.5 years old. As of now still 77% after 8 hours with beam on, bright max, gprs on. WOW! Thank You!!!!!
My HTC universal crashes ( shuts off) after being disconnected from the charger for only a short while. I have noticed this when trying to make a telephone call and when listening to an audio book on Media.
The device is about 3 years old. The OS is Tomal version 8.5..is it an OS problem or battery problem.
I dont want to invest in a new battery if that is not the problem.
it's the battery!
It has to be the battery,see if it's bulged in the middle...means it has to be replaced.You keep using a near dead battery and one day it may leak/explode and damage your beloved Uni.Just change it.Or borrow one and see how your device performs so you can decide...
I neglected to mention that the battery shows 95 % charged when this happens. I can get back to the device if I plug it in.
Can you recommend a new battery?
rkbrouwer said:
I neglected to mention that the battery shows 95 % charged when this happens. I can get back to the device if I plug it in.
Can you recommend a new battery?
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Click to collapse
95% of not much charge is still 95% charged, its the battery. If you look on Ebay you can find batteries quite reasonable, but try to go for an original one.
Jay
Is that really true? The amount that the 95% is applied to is not a fixed amount and decreases over time? If that is so what is the purpose of something that says 95% full? How can I find out what full is?
Imagine a fuel gauge like that. The size of the tank gets smaller and smaller.
Testing your battery
The only true way to test your battery is to measure its voltage. the two larger terminals on the battery are the + and _, the _ is the terminal nearest the corner. test it with a mulimeter, if it is below 3.75 volt then charge it and test again. If it drops below 3.75 volts after a short time then it is worn out. the battery bar on the screen is only a rough idea of power left.
Hope this clears this up for you
Jay
Voltage shouldn't be dropped, it will be same even if there is no charge.
The cell's inside the battery are not capable to retain the charge and immediately returns a signal to the control circuit that he is full! Control circuit then triggers an updates to the memory chip (located under control circuit).
Polling mechanism (triggers by the driver) in the device gets the battery status directly from the memory chip and it is the main reason basically getting a false percentage.
Anyway, just replace the battery and everything will be fine then.
Has anyone tried the suggestions mentioned under XDA wiki before replacing the battery. One alternative was to discharge the battery completely by freezing it and then rechargingt it. Another was to tape the two indicator terminals.
BTW what is the effect of going into "bootloader (by backlight+power+reset button)" as mentioned in solving the battery problem undeer wiki XDAI hope that it does not mean that I have reinstall Mobile 6.1
3 years is old enough for battery, i think its your time to buy a new one.
if you want to try one of that method, i suggest you trying a tape method. i try with my batery (fals indicator) and it work.
going to bootloader for drain your battery. for me i turn on wifi and blue tooth at the same time, set band to G3 and turn GPRS on, and playing music and games. it drain faster
tomal said:
Voltage shouldn't be dropped, it will be same even if there is no charge.
The cell's inside the battery are not capable to retain the charge and immediately returns a signal to the control circuit that he is full! Control circuit then triggers an updates to the memory chip (located under control circuit).
Polling mechanism (triggers by the driver) in the device gets the battery status directly from the memory chip and it is the main reason basically getting a false percentage.
Anyway, just replace the battery and everything will be fine then.
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Click to collapse
master chef tomal is right , its the ability or capacity of the battery to hold proper amperage or power. you cannot simply measure the voltage across the terminals as it will not be definitive in ascertaining such holding capacity especially for battery that is about to deteriorate its cells (not yet fully dead).
Of course, if the reading is below than the usual rating, the only logical option is for you to replace it asap. but if its within the range, you have to do further testing.. and, if you want to experiment a little, try to put a load across its terminals like an LED with 1kohm resistor, and then measure the voltage. if it drops drastically, your battery is ready for retirement However, if the voltage rating remains, measure the time your battery will be fully discharged using that load. thereafter, let me know how many hours or day it lasted to help me compute the approximate amperage of your battery, regards... :
i have my magician battery drained and now it is not booting.
Even if I charge it in long hours still no luck to revive it.
I used Cotulla's O5 (WM6.5 for 64mb ram).
Anyone familiar with the issue? Thanks!
I had a Magician like that. Battery had to be shocked to restore it because leaving it drained for a long time caused internal shorts. To shock it, I used a variable 25V power supply applied to the battery contacts very briefly which makes a spark. I did that several times until the spark is smaller and the battery shows some voltage. This trick also works for other rechargeable batteries that refuse to charge.
Sometimes with Magician, it's not an internal battery short, but that the battery voltage is below a charging threshold. In that case, I used small wires to attach to the + and - battery terminals with the battery in the phone, and attached a variable power supply to raise the voltage to around 3.7V under load so that the phone will boot with the dead battery. Once it is booted and the LED is orange to show that it's charging, I remove the power supply and it will stay charging till the battery is full.
You could kill your phone doing this wrong and I don't know what equipment you have access to, but these are things that have worked for me. Although the simplest way is just to buy a new battery.
@GnatGoSplat
hi mate, this is really helpful!
GnatGoSplat said:
To shock it, I used a variable 25V power supply applied to the battery contacts very briefly which makes a spark. .
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Click to collapse
With 25V power supply you can burn battery protection electronics inside in battery and it is possible in that case to overcharge the LiOn battery in next charge cycle and the end it can EXPLODE. In future you can try to apply 5V for little long time and you will achieve same results without any danger to burn battery electronics
Hi arjaylight
Before few days I have same problem with drained new Magician battery. I charged it for little time but the same results as yours, after hard reset the device boot normally.
That depends on the cause of the battery not charging. If battery voltage has fallen below charging thresholds, then applying 5V for a long time should work. If battery won't charge because of internal shorts, 5V will not burn off the internal shorts and the battery will just get warm. To blow out internal shorts, you need a much higher voltage across battery terminals for a very short time. Generally, you should just dispose of shorted batteries as you are correct that they could explode with any attempt to squeeze more life out of them.
Many People used a 9V Battery Block.
Connect only short but frequently ! After ca. 10 Shots maybe u have Luck.
I successfully make that with 2 Sony Ericsson Batterys from K800i.
Is the same Problem : Undervoltage or a little internal short.
Be carefull and patient !
battery drain
thanks for all your inputs.
im trying to find power suplly bu i think what is readily available is the 9v battery block. thanks moto26.
could you explain in details how you did this. 10 shots but how about the intervals? 5secs?
just a side note, after doing all of this if you find that it doesn't work for whatever reason. I found that the dealextreme batteries for the magician hold their charge well and they are very cheap compared to ebay etc.
Hi all.
I've over-discharged my stock battery and now it doesn't charge. It lights up green as soon as I plug the charger. I've tried different chargers but didn't help.
I've made this using short circuit so don't think it's related to Sensation. You may ask why I tought over-discharging may solve the touchscreen issues. Don't know if it's solved because phone doesn't open.
Do you have any advice to restore the battery rather that getting a new battery? I've already ordered new battery though.
Certain laptop battery manufacturers use a circuit which stores battery charge information, but is itself, "kept alive" by the residual current in (even a dead) battery.
I've seen the case on a number of times that discharging below the "allowed" level causes this circuit to fail, thus the communication between battery and device is incorrect, inaccurate or, at worst, not there at all.
(this is why there are more than just + - on your battery)
You could find the correct recharge rate for the battery - current and voltage - and charge it manually, and hope that said 'battery state circuit' comes back to life, but honestly, I think you'll be, as they say, SOL.
I've had perfectly good laptop batteries, holding a full charge, having a great discharge rate, but the laptop would refuse to accept it, just because of this little circuit.
WARNING: Charging / over charging / charging in a way other than in accordance with the original device literature can VERY likely cause the battery to fail completely, including, but not limited to FIRE or EXPLOSION! DO NOT PROCEED UNLESS YOU KNOW EXACTLY WHAT YOU ARE DOING. LiPo (and LiIon for that matter) are EXTREMELY DANGEROUS when used wrongly!
All the above said, have fun, don't blow yourself up, and let us know how you get on. Also, from a personal point of view, I'd be interested to know the 'technical reasons' behind the thought that over-discharging could solve the touch-screen problem - can you remember where you got the info originally?
Figure_desire said:
Hi all.
I've over-discharged my stock battery and now it doesn't charge. It lights up green as soon as I plug the charger. I've tried different chargers but didn't help.
I've made this using short circuit so don't think it's related to Sensation. You may ask why I tought over-discharging may solve the touchscreen issues. Don't know if it's solved because phone doesn't open.
Do you have any advice to restore the battery rather that getting a new battery? I've already ordered new battery though.
Click to expand...
Click to collapse
wtf? did you shortcut the battery or the phone? if shortcut the battery it my be blown. Anywyas you could try jump charging it, unplug and plug it in fast, or put it in a outlet which has a switch and try toggling it on and off for some minutes, you may be able to jump it up to the voltage it needs to start charge
niddnet said:
Certain laptop battery manufacturers use a circuit which stores battery charge information, but is itself, "kept alive" by the residual current in (even a dead) battery.
I've seen the case on a number of times that discharging below the "allowed" level causes this circuit to fail, thus the communication between battery and device is incorrect, inaccurate or, at worst, not there at all.
(this is why there are more than just + - on your battery)
You could find the correct recharge rate for the battery - current and voltage - and charge it manually, and hope that said 'battery state circuit' comes back to life, but honestly, I think you'll be, as they say, SOL.
I've had perfectly good laptop batteries, holding a full charge, having a great discharge rate, but the laptop would refuse to accept it, just because of this little circuit.
WARNING: Charging / over charging / charging in a way other than in accordance with the original device literature can VERY likely cause the battery to fail completely, including, but not limited to FIRE or EXPLOSION! DO NOT PROCEED UNLESS YOU KNOW EXACTLY WHAT YOU ARE DOING. LiPo (and LiIon for that matter) are EXTREMELY DANGEROUS when used wrongly!
All the above said, have fun, don't blow yourself up, and let us know how you get on. Also, from a personal point of view, I'd be interested to know the 'technical reasons' behind the thought that over-discharging could solve the touch-screen problem - can you remember where you got the info originally?
Click to expand...
Click to collapse
This is my second unit and it has touchscreen problems too. I'm not an expert but here is why I did that.
My phone was working normally and had %20 battery left. I went outside and didn't have extra battery or charger so I've used my friend's USB cable and lapto to charge it. After it reached to 44% I unplugged it and saw touchscreen issues started. I've searched and remembered some advices from XDA like discharging and charging may solve it so I gave it a try but it didn't help. Then tried over-discharging and charging but stock here.
What do you mean by charge it manually?
Utking said:
wtf? did you shortcut the battery or the phone? if shortcut the battery it my be blown. Anywyas you could try jump charging it, unplug and plug it in fast, or put it in a outlet which has a switch and try toggling it on and off for some minutes, you may be able to jump it up to the voltage it needs to start charge
Click to expand...
Click to collapse
I did short circuit the battery I know sounds crazy but I'm sick of touchscreen issues. Are you saying that I may try connecting it an appropriate charger's output directly like + > + , - > - ?
I'm saying, chances are, it's wrecked. You shouldn't really discharge batteries by short-circuit - that puts massive stresses on the structure of the cells in the battery and probably completely ruins it.
It can also cause excessive heat, which can lead to nasty things happening.
Recharging the battery by connecting + to + and - to - is theoretically possible, however, to do this SAFELY, you would need to know the manufacturer's recommended charge rate, times, voltages etc. They differ greatly.
Do it too slowly, and you just result in a very inefficient trickle-charge, which can sometimes do more harm than good....
Do it too fast - cells in the battery become gaseous, the gas vents, and you have fiery explosions... also not good.
Seriously - I would strongly recommend against playing with it. If you want to see what CAN happen when it goes wrong, YouTube it!!
http://www.youtube.com/watch?v=z3o_2mwRPdw
Insane amounts of energy stored in these batteries
niddnet said:
I'm saying, chances are, it's wrecked. You shouldn't really discharge batteries by short-circuit - that puts massive stresses on the structure of the cells in the battery and probably completely ruins it.
It can also cause excessive heat, which can lead to nasty things happening.
Recharging the battery by connecting + to + and - to - is theoretically possible, however, to do this SAFELY, you would need to know the manufacturer's recommended charge rate, times, voltages etc. They differ greatly.
Do it too slowly, and you just result in a very inefficient trickle-charge, which can sometimes do more harm than good....
Do it too fast - cells in the battery become gaseous, the gas vents, and you have fiery explosions... also not good.
Seriously - I would strongly recommend against playing with it. If you want to see what CAN happen when it goes wrong, YouTube it!!
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Click to collapse
Yesterday I connected the battery which is stock 3.7 V to the my digital camera's charger which is 4.25 V, 0.25 A, 50-60 Hz with cables for 6 hours but didn't work. BTW, stock charger is 5V, 1 A and 50-60 Hz.
Can I try jump charge with this camera's charger? If I can, how fast should I connect and disconnect the cable?
That's exactly what I'm talking about.
It should be noted that the Sensation stock battery is LiIon, rather than LiPo, but the effects can be very similar, and just as disasterous if that happens when your battery is in the vicinity of.... anything!!!
I think it's dead mate =/ but just switch it on and off a couple of times in a second
Utking said:
I think it's dead mate =/ but just switch it on and off a couple of times in a second
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Click to collapse
Couple of times in a second? I'm not a Flash man Or Shelden Cooper
Just tried but didn't work.
Short circuited battery? Hopefully it wasn't in the phone. Battery is dead, get Anker.
tinky1 said:
Short circuited battery? Hopefully it wasn't in the phone. Battery is dead, get Anker.
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Already ordered stock battery. When Anker is available to Europe I will order it too.
Figure_desire said:
Already ordered stock battery. When Anker is available to Europe I will order it too.
Click to expand...
Click to collapse
Then buy the chichitek one, it's awesome and lasts just as long as the anker, if not longer, and they ship to europe! i got two chichitek batteries+ charger for 25$ usd inc shipping to norway
1. The phone won't turn on
2. The charging indicator doesn't light up when I try to charge the battery.
3. One of the sensors on the top left turns dim red in color when I connect the charging cable
4. I can't hard reset either
thanks
Did the battery die all the way? Or did you flash a radio without checking the md5? If its a borked radio install say hello to a 500 dollar paper weight if its the battery your gonna have to charge it in another phone cause I'm not sure if cwm 5.0.2.7 has powered off charging
Sent from my myTouch_4G_Slide using Tapatalk 2
Yes we need a couple of info first. Also we need every information we can get in the last events before the phone got bricked. Like what did you do? what ROM? What's the status of the phone? Battery?
The more the details the better we could assist you.
Sounds like when my first Mytouch 3g broke, it would turn on the first couple of times going into a bootlope at the HBoot. It also didnt respond to charging or any other battery i tried.
Thanks for the reply strapped. I haven't flashed a radio. I did flash the virtuous infinity rom though. I'm not certain if that affected the radio. I did, however, let my battery die all the way. Do you know why one the sensors on the top left corner turns dim red when I connect the charging cable?
CJ_ said:
Thanks for the reply strapped. I haven't flashed a radio. I did flash the virtuous infinity rom though. I'm not certain if that affected the radio. I did, however, let my battery die all the way. Do you know why one the sensors on the top left corner turns dim red when I connect the charging cable?
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Click to collapse
Oh crap the battery die all the way problem
I think your battery is dead.s
Saw dozens of problems like this on the my previous device's forum.
Li Ion batteries have this fuse inside it in which it trips off when the battery gets discharged to a certain voltage. If it does your battery goes into a suicide mode in order to protect the phone.
basically the best thing to take good care of your battery is not let it drain lower than 40% and not fully charge it to 90%.
discharging it too low drains it's lifespan drastically. While charging it too high also drains it's lifespan.
Over-discharging Lithium-ion
Li-ion should never be discharged too low, and there are several safeguards to prevent this from happening. The equipment cuts off when the battery discharges to about 3.0V/cell, stopping the current flow. If the discharge continues to about 2.70V/cell or lower, the battery’s protection circuit puts the battery into a sleep mode. This renders the pack unserviceable and a recharge with most chargers is not possible. To prevent a battery from falling asleep, apply a partial charge before a long storage period.
Battery manufacturers ship batteries with a 40 percent charge. The low charge state reduces aging-related stress while allowing some self-discharge during storage. To minimize the current flow for the protection circuit before the battery is sold, advanced Li-ion packs feature a sleep mode that disables the protection circuit until activated by a brief charge or discharge. Once engaged, the battery remains operational and the on state can no longer be switched back to the standby mode.
Do not recharge lithium-ion if a cell has stayed at or below 1.5V for more than a week. Copper shunts may have formed inside the cells that can lead to a partial or total electrical short. If recharged, the cells might become unstable, causing excessive heat or showing other anomalies. Li-ion packs that have been under stress are more sensitive to mechanical abuse, such as vibration, dropping and exposure to heat.
Click to expand...
Click to collapse
maybe you guys should read this.
http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
Cheers guys. Here's every bit of information I can recollect
A few days ago I created a nandroid backup and formatted my sd card via the PC.
I flashed the latest version of CWM recovery
I flashed the virtuous infinity rom 1.33 alpha v3 and then flashed the 1.35 beta 1 update.
Then i copied some music on to the SD card and installed a couple of apps.... nothing out of the ordinary.
The phone worked fine the last couple of days but I don't remember letting the battery die all the way. I should add that I have a dodgy battery; a couple of months ago my dear girlfriend spilled her drink and beer went in to back of my phone... since then the keyboard doesn't work (some keys work but its basically dead) and the battery has been affected as well since it now only lasts 3-4 hours after a full charge....but this issue can't have caused the problem I'm now having because the dead keyboard and dodgy battery have been around for a few months...
Last night, however, I think I let the battery die all the way and at some point, when I tried to turn it on, the phone vibrated as it does when you hold the power button, however, the screen didn't turn on. Since then, nothing has changed. When I connect the phone to the PC, it makes a couple of "connection" noises but I can't access the SD card or contents.
by saying latest CWM is it the 6.0 touch based CWM by chance?
sorry mate, i meant 5..0.2.7.
That's the CWM I'm using so it's safe. I'm also on latest VI for weeks without problem.
So it all points out to your battery.
Phone vibrating to power button means it's responding perfectly. Not sure about the light on the sensor only htc technician can tell.
But what I can say is if your trackpad button lights out red always then you got a brick on your hand.
Nope the trackpad isn't red so I guess that's a good sign. I've ordered a new battery and should have it later this week. Let's see if that fixes the issue. Will report back. Thanks all!
So, a new battery has arrived, however, it hasn't helped as the phone won't charge (no orange light) or turn on...... Since I live in Australia, I don't know anyone else with this phone. Is there any other way for me to revive my brick of a phone?? Thanks
CJ_ said:
So, a new battery has arrived, however, it hasn't helped as the phone won't charge (no orange light) or turn on...... Since I live in Australia, I don't know anyone else with this phone. Is there any other way for me to revive my brick of a phone?? Thanks
Click to expand...
Click to collapse
Get a universal charger for your battery.
Sent from Spaceball One.
This is a rough situation. Even with my DS I've had situations where nothing would happen when I tried to restart it, in particular when I let the system run all the way down. It is as if the battery needs to have some charge for it to charge more. I have three batteries though (the stock & two Anker 1900's) so when this happens I just swap out the battery with one that I charged in the external charger, and I haven't had any real issues with them long-term. Since you bought a battery, what battery was it, and do you think it was charged when you got it, and do you have an external charger to verify that the charge is solid when you put it back in the phone? Your phone may be completely dead however, but at this point, I don't think anybody on the thread really can tell. This make sense? I don't want to say, "buy a set of Anker 1900's with an external charger" but it was cheap enough vs. the cost of the phone, and the DS does seem to be a good one overall.
Hi All,
So I got an external charger for the battery and it arrived yesterday. I then proceeded to charge the battery and hours later, no luck. The phone still doesn't turn on. When I hit the power button, one of the sensors on the top left turns red slightly, shortly after which the phone vibrates. However, it doesn't turn on.
Where do I go from here?
Thanks
have you tried to disassemble your phone at all? you said liquid was spilled in it, could take time for corrosion to turn up. maybe a little electronic parts cleaner or rubbing alcohol may help out
Nope I haven't tried to disassemble it yet but is that the only option remaining? If yes, I might have to give it a go because this phone is now as useful to me as a brick, in its current state.