Well, I guess I've been lucky. I've been flying gliders and power planes for around
15 years, have used only the wall-warts, and never had a single battery problem (well,
there was the time my Boomerang almost caught on fire, but that's another story).
When my batteries start getting a few years old, I usually just replace them. I admit
it's possibly not the most environmentally friendly thing to do, but it seems to save
a whole lot of hassle compared to meticulously maintaining a battery's health.
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