View Full Version : charging

02-03-2010, 10:31 PM
i have 3 4volt rechargeable battery, shopkeeper told me tht it can be charged by a mobile adaptor.
but it is not charging.

can u plz tell me how to charge it using an adaptor:(

02-03-2010, 10:57 PM
I belive you are refering to the red and blue batteries marked 4V and sold in a nice plastic boxs. If they are not then ignore whats written ahead.

Here is the problem - They are old LI-Ion battries from old laptops. They are discarded battries to start with so you got ripped like me :|.

The are actually 3.7 volt battries with peak current of 4.2V and need a Li-Ion charger . So you need a Li-Ion Charger .... But as they already have past their prime dont expect them to behave anything like new batteries.

Maybe i should post a warning about them.

02-04-2010, 07:33 PM
:mad: it seems i was duped too

can u tell me where can i buy decent & authentic 12v >3Ah li-ion battery in delhi or internet