How often should I charge my k10D battery?
I have a k10D with two batteries, charger and battery grip, though I often don't use the grip. Do I need to completely drain the battery before recharging it? If I'll be out all day shooting a lot, should I charge the batteries the night before, even though I don't know if they are almost fully charged, half full or nearly drained?
I want to get the maximum life out of my batteries but I don't want to get stuck with dead batteries in the middle of the day at the bottom of a canyon where I can't recharge!
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