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That won't hurt it. You've got to run it down to 6-8 volts for permenant damage to set in. But if you do that a lot, and it sounds like you do, you should go to a dual battery system with a cheap solid state controller that isolates your (new) starting battery and runs your accessories off the old one (if it's worth keeping). That way, you never get stuck with a dead battery and you can always charge up the secondary battery. I would consider a small Optima glass mat for my primary battery. They are small, light and powerful and capable of deeper discharge than conventional lead acids. And you can sometimes get two into a space made for a larger battery. They're expensive, though.
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Ptero
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