Panasonic 18650 3400 mAh (ebay) batteries - Voltage Question

Candurin · Dec 21, 2012

Just a quick question, as I've been reading good and bad stories with charging and storage etc.

I just took my new batteries (http://www.ebay.com/itm/390497116432) and checked them when I received them. They measured 3.6V.

I just took one of them off my new XTAR SP2 charger (charged at 1A) and they just measured 4.16V. Should I be concerned with the higher voltage coming off the charger?

SilverFox · Dec 21, 2012

Hello Candurin,

Welcome to CPF.

Li-Ion cells are rated at 3.6 or 3.7 volts because that is roughly their voltage under load. Fully charged then end up close to 4.2 volts.

Tom

kurnialim · Dec 21, 2012

I also bought that one on ebay too, I never know the real voltage but my flashlight seems ok.

Norm · Dec 21, 2012

kurnialim said:
I also bought that one on ebay too, I never know the real voltage but my flashlight seems ok.

It's wise when using Li-ion batteries to purchase a multimeter so as you can test cells and have some idea of what's going on.

Norm

yvonne_chan · Dec 23, 2012

you use unprotectd battery cells right? I advice the Panasonic 18650 3400mAh battery with protected circuitry is better because it can provent from over-charge, over-discharge, high temperature, low temperature and short circuit.

Panasonic 18650 3400 mAh (ebay) batteries - Voltage Question

Candurin

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yvonne_chan

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