Monday, August 20, 2007

The batteries get warm when I charge them. Is this normal?

The batteries get warm when I charge them. Is this normal?

Yes, when charging NiCD or NiMH rechargeable batteries, they do increase in temperature substantially due to internal resistance. The batteries may feel warm/hot when the charge is completed. According to specification, most NiMH batteries may heat up to 131 deg F or 55 deg C during a rapid charge. Allow your batteries a few minutes to cool down before using them.

Tip: Leave the dust cover lid open when you are charging your batteries to help dissipate the heat.

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