Safely charge a 9 volt li-ion battery


I want to safely recharghe a 9 volt li-ion battery (for example this one: Does anyone can give me some info on how to do this safely?

Thanks in Advance

Do you really want to trust an unbranded lithium ion battery to charge without risk. As has often been written, one of the safest ways is to actually buy a commercial charger specifically designed to charge lithium ion batteries.

Its a two-cell LiPo battery 7.4V, not 9V, without the inter-cell tab brought out - cannot be safely charged IMO since the individual cell voltages cannot be sensed.

Also since its LiPo it inherently a lot less safe than most lithium ion batteries. The advice for LiPo is to use the correct charger, never leave unattended, place on a fire brick or other fireproof surface - not joking.

It the battery starts to swell up it is becoming dangerous and should be disposed of by placing in a bucket of water for a few weeks...

If you want safe lithium batteries go for LiFePO4 (lithium iron phosphate) technology, its far safer.