PetrosA
Senior Member
- Location
- Lancaster, Pennsylvania
No, it's an NiMh. It's not the battery shutting down, but the charger that has a built-it sensor that was set at approx. 104?F (40?C). The battery itself will get hotter than that and still run or charge, but when the ambient temperature goes up in the summer, I have to be really creative about charging. It just seems like one of the Continental decisions that don't take into account other regions....
By any chance is this a LiIon battery? I can't remember the details at the moment, but I believe high temperature during the charging cycle is what causes the runaway effect with the lithium, and as we have all heard, is why these batteries ignite. New battery chemistries are helping to reduce this, but it is still critical to closely control the temperature when charging.
...
Regardless of the battery type, heat during either the charge or discharge cycle will kill the battery. That's not something unique to one brand of tool or the very few brands of batteries (there is only a small handful of battery manufacturers in the world, so regardless of the brand of the tool, the batteries all come from the same companies.). Fein, Festool and Metabo closely monitor temperature. The companies that don't monitor temperature as closely do not have the end-user's best interest in mind.
Well, we're brought up to be consumers, not conservators, so it all makes sense . I personally would like to see a battery design that incorporates both passive and active heat dissipation but I'm sure that would just increase the bulk of the battery and the price.