Strange thing happened to my 7650 today.
Just had it on my desk as per usual and i looked up and it had turned itself off. It has done this before but what it has not done before is refuse to turn back on again. I pressed the power on switch, got a white screen for two seconds and then it goes off again, not even the nokia logo came up. It won't boot. And before you ask, yes the battery was fully charged.
Just for experimentation's sake i put in my spare battery (about half full i guess) and it booted no problem. Strange.
I guess there's something wrong with the first battery. I have my phone sitting in a desktop charger from 9am-5pm every day even if it's full. Have I 'over-charged' the battery? Sort of burn it out? It was official Nokia too, none of this third party crap.
No big deal as my phone's running now with the spare, just wanted to know if anyone's had this experience before or witnessed similar? If it's a common problem i'll know to stop charging my phone so much.
Cheers
Lee
y'know... I've had that happen to me before, though I can't remember if my phone was on charge at the time, and I only have one battery so I obviously didn't change the battery. I just left it for a minute or two and tried again and it came on.
Maybe it's more to do with overheating than overcharging? I have found my phone to be quite hot sometimes when it's on charge.
Hi,
All batterys are very similar in that when heat is being generated the battery is getting close to the fully charged state.
Obviously you can go to far, heating the batterys internal plates up to much, inturn distorting them and destroying the battery.
I used to race model cars and there was a lot of talk about the right and wrong way to charge batterys. One way was monitoring the heat and using that as a guide as to when to stop charging.
Our phones using internal circuitry to monitor the batterys state and decide when to stop accepting charge. Although having said that it is probably best to turn off the charger once the phones beeped as I'm sure power still goes through to them and hence may over charge.
Also batterys have a slight memory within the cells, hence why it is recommended to fully discharge (flatten) them every once in a while and fully recharge again inorder to maintain them at their peak performance.
This is more known as "Cycling" them. As if you half discharge then recharge again the battery only gets used to half it's capacity and doesn't give out it's best performance.
The Lithion Ion cells used in mobiles are a little more forgiving when it comes to this memory, but they do suffer just as much and infact if not charged correctly are less forgiving and tolerant than ordinary nicad's.
My advice is to routinely flatten your battery and recharge, also removing the power source once the phones beeped to signal charge complete.
Hope this helps and doesn't make it even more complicated?
Ian
Hi,
Thanks for your advice guys (and girls 😃 ). Looks like i need to rethink how i recharge.
I must admit it's probably the heat. It's damn hot in Watford (UK) at the moment anyway, (weather-wise) and i guess over charging the battery was the final straw for my phone.
Thanks for all the info Ian, certainly didn't know about battery memory...seems i learn something new everyday about Symbian phones! 😃
Thanks Again,
Lee 8)