Mobile phone battery life

[xplosv57]

hey all

got a Nokia N95, had it for almost 2 years now, when i first bought it i never did the stock standard 14 hour charge youre supposed to do when you first use it, i just charged it a bit and used it.

so from new, the battery life has been max 3 days if i dont use it, but usually lasts a day, 18 hours max!!

more recently, ive charged it overnight to full, used it for not even 6 hours (heavy use camera, internet etc) and the phone battery dies......

will buying a new battery and charging it properly fix the issue, or has the phone reached the end of its life??

Warning: This is an Old Thread This discussion is older than 120 days. information contained in it may no longer be current . Please think of the children before resurrecting this ancient thread!

[hazrd]

i will say yes, but ONLY if you buy a genuine nokia battery

i bought a non genuine battery for my N95 when i had it, and it was worse!! thinking it was a dodgey battery i reported it to the ebay seller and he sent me a new one, still no go

[Ice]

hey all

got a Nokia N95, had it for almost 2 years now, when i first bought it i never did the stock standard 14 hour charge youre supposed to do when you first use it, i just charged it a bit and used it.

so from new, the battery life has been max 3 days if i dont use it, but usually lasts a day, 18 hours max!!

more recently, ive charged it overnight to full, used it for not even 6 hours (heavy use camera, internet etc) and the phone battery dies......

will buying a new battery and charging it properly fix the issue, or has the phone reached the end of its life??

It'll be the battery mate.

Give it a good first charge this time

[hazrd]

http://cgi.ebay.com.au/GENUINE-ORIGI...item5ad7bd2732
^^^^ genuine battery



are u still in contract? the N85 is an awesome replacement for it if u still like the N95 (different shell, same software, faster processor)
just a thought

[sooty]

Ok, so the worst thing you can do with a phone battery is OVER charge it, I'll try and keep this simple (I don't mean to sound belittling, it's just quite complex)
I assume the phone has a lithium ion battery, if not it'll prob be a NiCad which runs on a similar principle. Ok, so in a lithium ion battery you essentially have two reaction component. There's free lithium metal ions (Li+) and a matrix LiCuO4. now when the phone is in use, or discharging, the ions are moved from the free ion state into their respective little holes in the matrix. Think of the matrix like a pile of layers, there are copper oxide layers, then lithium ion layers and these alternate. When you discharge the phone so it's completely dead, all the free li+ have moved into the matrix layers.
Now as you charge your phone, you remove the Li+ from the matrix, and make it free Li+ again (this takes energy, thus using a Powerpoint). Now at fullcharge, there's still at least 30% of the lithium ions left in the matrix, these are used like tile spacers to keep the layers apart. Now when you overcharge, you end up removing all the Li+ from the layers, and with nothing there to support it, the layers collapse on themselves. With collapsed layers, the free ions have nowhere to go when you discharge/use the phone, so your battery life is diminished.
Basically, overcharging = bad! And most phones/chargers have the ability to stop the battery from overcharging.
Ok, so it's an in depth response, but it is the nerd section!

[xplosv57]

ok, will definetely go genuine parts, never trusted non gen parts for mobile phones.......

as for contract, i think its almost over but other than the battery and sometimes freezing, the phone isn't too bad and will keep it provided the battery can last!!

searched the N85, its not bad but if it has the same N95 software, it wouldnt be an upgrade!!

spoke to a mate who had the same phone, his would last almost a week and thats making calls everyday so definetely must be the battery!!

[xplosv57]

Ok, so the worst thing you can do with a phone battery is OVER charge it, I'll try and keep this simple (I don't mean to sound belittling, it's just quite complex)
I assume the phone has a lithium ion battery, if not it'll prob be a NiCad which runs on a similar principle. Ok, so in a lithium ion battery you essentially have two reaction component. There's free lithium metal ions (Li+) and a matrix LiCuO4. now when the phone is in use, or discharging, the ions are moved from the free ion state into their respective little holes in the matrix. Think of the matrix like a pile of layers, there are copper oxide layers, then lithium ion layers and these alternate. When you discharge the phone so it's completely dead, all the free li+ have moved into the matrix layers.
Now as you charge your phone, you remove the Li+ from the matrix, and make it free Li+ again (this takes energy, thus using a Powerpoint). Now at fullcharge, there's still at least 30% of the lithium ions left in the matrix, these are used like tile spacers to keep the layers apart. Now when you overcharge, you end up removing all the Li+ from the layers, and with nothing there to support it, the layers collapse on themselves. With collapsed layers, the free ions have nowhere to go when you discharge/use the phone, so your battery life is diminished.
Basically, overcharging = bad! And most phones/chargers have the ability to stop the battery from overcharging.
Ok, so it's an in depth response, but it is the nerd section!

i dont see how i could have overcharged the battery if i didnt charge it enough initially!!!

but will buy a new battery and charge it for the time specified by Nokia and go from there....

[sooty]

i dont see how i could have overcharged the battery if i didnt charge it enough initially!!!

but will buy a new battery and charge it for the time specified by Nokia and go from there....

Yeah sorry, wasn't implying you had, kinda just got on a roll lol. And a lot of people just leave their phone on charge, so when anyone reads this thread in the future, they may find it useful.
With yours, the initial charge is essentially used to determine how many of the ions are able to move in and out etc, by not charging it fully to start, instead of only 30% remaining in the matrix, you've prob got 50% remaining in the matrix, so you've only got about 70% the movement you should, hence shortened battery life.

[hazrd]

an overnight charge is usually ok... just make sure it comes off charge as soon as u wake up lol

[xplosv57]

i just read that and keep thinking of keanu reeves lol

just read some reviews on the N85, sounds like its worse than the N95...........