

Presuming that the cells have proper vents, they're not likely to explode, but leaving relatively large quantities of free oxygen and hydrogen roaming around inside the cell isn't doing it any favors.Regardless, granted, the heat in and of itself is not the actual problem. "It's painful to hold it in my hand?" Not so much. Quote:Oh and NiMHs fast charging is a myth, NiMHs get hot and are meant to get hot. But if you tend to use your batteries in pairs, then this difference won't really matter since you're likely to keep the pairs together.For $30, I think the Maha charger is a good deal. This might be just marketing BS, but I tend to think not as I've had heavily used NiMH batteries not want to charge in other chargers, but come back to life in my Maha charger.The model that I have has 4-independent charging circuits, while this model only has 2. The Maha MH-C204W is arguably the best one that they make for AA and AAA NiMH batteries.It will charge your batteries to 98% of their capacity in a mere 60 minutes and has a 4-stage charge process: Ramp-up, Rapid Charging, Top-off, and Maintenance.It does a lot to help out your batteries by both doing the "ramp-up" (timed high-current pulses) designed to revive old or aging batteries and it does an automatic discharge/charge conditioning cycle when needed.

Personally, I like the Maha chargers and have found them to be excellent. Some battery chargers are better than others.
