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Lithium Ion battery 3.6V max. charge voltage?

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Boncuk

New Member
I have been using a Motorola cellphone C381 with a tiny charge connector which is broken.

So I have to manually charge the batteries. The charge adapter has 6.25V stabilized output, but the batteries' labels show 3.6V.

What is the maximum charging voltage which could be applied to those batteries?

Thank you

Boncuk
 

bountyhunter

Well-Known Member
I was surprised to find out there are some rechargeable Li coin cells that are indeed 3.6V (full charge) cells. If these are those, you charge them up to 3.6V not 4.2V. If they have 3.6V stamped on them, that could be what they are. If you have the manufacturer's part number, do a net search and make sure which kind they are so you don't overcharge them.
 
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audioguru

Well-Known Member
Most Helpful Member
If in doubt, don't charge a lithium battery and cause it to catch on fire if your voltage is too high.
 

RadioRon

Well-Known Member
The vast majority of these cells aim for 4.20V as the endpoint. Typically, Li-Ion cells are charged by first applying a constant current (at some fixed value, often 0.5C) until the battery voltage is 4.2V, and then applying constant voltage until the current flow into the cell drops down to about 0.1C at which point the charging is done.
 
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