 Notice. New forum software under development. It's going to miss a few functions and look a bit ugly for a while, but I'm working on it full time now as the old forum was too unstable. Couple days, all good. If you notice any issues, please contact me. |
Forum Index : Electronics : Flat Cell-phone battery is dead?
| Author | Message | ||||
Grogster Admin Group  Joined: 31/12/2012 Location: New ZealandPosts: 9308 |
Hi - I have a cheap cell-phone I use just as an alarm clock and MP3 player, but I accidentally allowed the battery to go totally flat. I remained flat overnight, till I could find my charger. The phone turned itself off because of low battery, or it just died cos of low battery. Problem is, that now the phone won't respond or charge back up again. Is this a situation where if you let the battery go totally flat, it is stuffed do you think? I have no other batteries of that type to test the phone on, and a replacement battery is worth more then the phone is - it was a cheap phone on special - I think I paid about $15 for it new WITH battery. Phone is Nokia 106.1, Type RM-962, and battery is Nokia BL-5CB, and battery terminal voltage is 3.07v at the moment(out of phone) after being on charge all morning, but phone refuses to start, and charger pack is cold. Phone has worked great as an alarm clock and MP3 player, plus as a text message receiver when I have been testing with GSM radio modules. I'm not worried about binning it and just getting another one, but I am just curious if there is anything else I could try to revive it. Smoke makes things work. When the smoke gets out, it stops! |
||||
| Georgen Guru  Joined: 13/09/2011 Location: AustraliaPosts: 462 |
I had few 1.2V rechargeable batteries that charger refused to charge I took battery out and I connected it 1.2V rechargeable battery for a day (had to go out) In the evening it was about 1 Volt Tried charger and it started charging, so didn't have to throw it out. Maybe you can do it with your phone battery? George |
||||
Gizmo Admin Group Joined: 05/06/2004 Location: AustraliaPosts: 5078 |
Same problem here. I have a iPhone thats just over 2 years old with a dead battery. The iPhone was fine till a few months ago, when I got a new Sony phone. Last night I charged up the iPhone, as I was going to use it to play pod casts for a road trip today. This morning the iPhone would not turn on, just displayed the low battery image on the screen. It refused to take a charge from the car charger. Its stuffed! I have other phones from years ago, and they still take a charge and work, though at reduced capacity. So maybe its just some phone brands and battery types that dont like been discharged for too long. Glenn The best time to plant a tree was twenty years ago, the second best time is right now. JAQ |
||||
| Grogster Admin Group Joined: 31/12/2012 Location: New ZealandPosts: 9308 |
Thanks guys. I never let this cheap phone run flat before, and it has worked beautifully during the time it was working. I might hook it up to a bench supply, and see if it will fire up - that would prove the battery is being un-co-operative. Charger is putting out the correct voltage, so there is juice on the end of the charger plug. It's not worth spending too much time on - cheap cellphones are just about being given away these days..... Smoke makes things work. When the smoke gets out, it stops! |
||||
| plasma Guru Joined: 08/04/2012 Location: GermanyPosts: 437 |
Last week i put a new akku in my 2 years old iphone 4s. The old one shows a 30% akku load but drops down in 2 minutes to 5% and shutdown soon after. The new one is better but i cant talk > 3h with . Its all crap. |
||||
Bryan1 Guru Joined: 22/02/2006 Location: AustraliaPosts: 1345 |
I've got an old nokia 5140i that I've kept as a backup(mainly as it cost me $500). Had it in the top drawer for atleast 2 years and when I got it out it still turned on. I loaned it to a mate after he smashed his smart phone and he said he got 5 days out of a charge. Not bad I reckon as that phone is about 10 years old. |
||||
| Grogster Admin Group Joined: 31/12/2012 Location: New ZealandPosts: 9308 |
Not bad at all! 
...they just don't make 'em like they use to........ Smoke makes things work. When the smoke gets out, it stops! |
||||
 Print this page |
