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Author Topic: Safely charge a 9 volt li-ion battery  (Read 385 times)
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Hello,

I want to safely recharghe a 9 volt li-ion battery (for example this one: http://www.alibaba.com/product-gs/780637367/High_Capacity_800mAh_Rechargeable_Lithium_ion.html).
Does anyone can give me some  info on how to do this safely?

Thanks in Advance
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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.
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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.

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