Question about Motorola Mobility E815

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E815 won't hold a charge

After about an hour stand-by time it is fully drained. even faster if i use the phone. new battery did not resolve the problem...

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2 Answers

Re: e815 won't hold a charge

Have you tried turning off the EVDO feature. I had the same problem, until I found the directions on the Internet to turn it off. Seems I was on the fringe of reception and the phone was draining the battery trying to acquire the signal. If you don't use the EVDO function, turning it off extends the duration between charges by almost a factor of 2. Sorry, don't remember the exact site with the instructions but believe HowardsForum has it.

Posted on Mar 28, 2008

Re: e815 won't hold a charge

It seems to be a glitch with this phone model. I am on my 3rd E815 and keep having charging problems and power cycling problems. I have to take mine into the store next week to exchange it for a new one (which most likely will keep doing the same thing). Best of luck to ya.

Posted on Dec 31, 2007

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Cell phone batteries have what is called a "memory" over time if they are charged without being fully drained they can start to not hold a charge. Unfortunetly the only fix for an issue like yours is to purchase a new battery. Your local retailer / service provider should have batteries in stock or they can order one for you.
It is recommended to allow the batteries to drain completely before charging, then allow at least 8 hours or more to fully charge. Most cell phone will show a full charge after a few hours, but this is more a fault with the software that check the batteries charge, then an actual indication of the battery being fully charged.

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If the cell phone battery is more than 3 - 4 years old then the battery could be worn out.Rechargeable batteries have a finite number of charge and discharge cycles andwill lose their charge capacity over time, i.e. won't charge to 100% andgradually the charge reduces until the battery won't charge up at all. OR Thebattery shows a 100% charge but when the adapter is disconnected the batterydrops off to zero capacity in a very short time. If the battery drops to anunacceptable charge level then the battery needs to be replaced.

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How many hours we should charge the battery fist time Nokia-2700

There are basically 3 types of chemicals currently being used for cell phone and laptop batteries. Ni-cad, Ni-mh and Li-ion. There is a fourth makineg its way in Li-ion polymer. A couple things are consistent for all types of batteries no matter what chemical is inside. You must initially give the battery a 12-14 hour charge on the home charger. (Don't use a cigarette adapter for the first charge. This conditions the battery and don't take it off the charger that first time even if the charging indicator says it's full after 3 hours. Also the manufacturer's also state to run it thru 3 charge cycles. What that mean's is that you fully charge and fully drain 3 times. 1 full charge + 1 full drain = 1 charge cycle. Here's where the way you charge the battery starts to differ.

Ni-cad: Mostly only on older devices, has a "memory" effect, should be drained before a full charge is put on it, should be removed after overnight charge or can be overcharged and burnt out.

Ni-mh: Still used for some devices, has slight memory effect but not enough to have to fully drain before the recharge, should not be consistently left on charger after full charge that can eventually burn out battery and shorten usage time.

Li-ion and Li-ion polymer: Used on a lot of newer devices, has no "memory" effect, should be recharged as often as possible, actually likes to be charged and draining it regularly can cause the usage time to be shortened, can NEVER be overcharged so whenever you're near a charger put it on there. Besides those benefits a li-ion battery is lighter and smaller but the chemical can hold more charge than Ni-cad and Ni-mh.

So the one reply to your question said to error on the side of draining the li-ion batteries. This is incorrect information. You want to charge the battery before it gets below a 20% charge. Also batteries will not go bad from accidentally doing the incorrect charging procedure here and there but normally follow the correct procedure. One last note try to use the home charger more often than the cigarette lighter charger for best long term results. Cigarette lighter chargers do not give a full charge (about 95%) which in the long run can damage any type of battery listed.

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Correct procedure for charging battery

read da manual which cms wid da battery on hw lng 2 charge it wen newly purchased. charge wen battery is cmpltly drained.smtimz it may refuse 2 chrg so get a universal charger nd alwz use it 2 crg

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you simply fried your battery by overcharging it. Just get a new one, let it fully charge and fully die twice before you start normal charging. Then you will want to only charge it for about 2 to 3 hours or find a charger that has a smart chip that tells it when to stop charging once the battery is full.

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