Life Expectancy Of A Cell Phone Battery
July 24, 2008 3:27 PM   Subscribe

Could someone give me a rough estimate on how long I can expect my cell phone battery to last. I am sure there is a wide variance, but I am just looking for an average life expectancy. I use it every day and charge it in the evening. I use it approximately 3 hours a week. Thanks in advance.
posted by Mckoan1 to Technology (6 answers total)
Probably two years -- three, if you're lucky. That's about the average life of a Li-ion battery.
posted by Blazecock Pileon at 3:31 PM on July 24, 2008

I had an el cheapo Nokia 2260 with BL5C battery that I bought in March 2005 and I didn't have to replace the battery until April 2008, though by that time the charge was holding only for several hours instead of days.
posted by tinkertown at 3:32 PM on July 24, 2008

Lithium batteries these days tend to die in about 3 years, unrelated to usage pattern. It's not a threshold thing; it's a gradual degradation which is caused by the underlying chemistry. Usually at about the three-year point the degradation is sufficient to render the battery useless.
posted by Class Goat at 3:37 PM on July 24, 2008

You're overcharging it. Let it run down before charging. Yeah, I know, new technology, blah, blah, blah. My last phone purchase was 3 phones & we each had different charging habits. I charged mine nightly or nearly so--just topping it off--while my wife let hers run down completely and gave it a full charge. (the third user was right in the middle.) My battery didn't quite last the 2 years of the contract, and the middle one was holding a charge for about a day. The wife's was in decent shape.
posted by beelzbubba at 4:00 PM on July 24, 2008

Nthing overcharging. I typically charge my phone once a week, if that.
But then I'm a very light user - no more than 20 minutes a day.
posted by dmd at 6:53 PM on July 24, 2008

what phone model do you have? it varies wildly between phones. for example, sony ericsson's z310a has 3.5hrs of talk time and the w300i has 9hrs.
posted by Xianny at 7:51 PM on July 24, 2008

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