expected normal voltage drop from load?
Is there a rule of thumb or guidance for an expected voltage drop based on amp load on a pair of 6V GC batteries? I was tinkering in my trailer this weekend and ran a 750 watt AC electric heater off ...
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There is more to battery usage than high current draws though. Golf cars that do that are in various iterations. 6-6s for 36v, 4-12s for 48v, 6-8s for 48v, and whatever.
I like 6s for easy recharge to true full after successive 50-90s. 12s are a bugger for that! :( I don't mind the extra voltage sag with high inverter draw, since I am set-up to deal with that. Solar doing daily 80-99s might be better with 12s, not sure. AGMs are known better for low voltage sag with high draws, but have their own "issues."
What you have to do, to get it right for your own camping situation, is read this forum for ten years, do a thorough analysis, and then flip a coin! :)
I like 6s for easy recharge to true full after successive 50-90s. 12s are a bugger for that! :( I don't mind the extra voltage sag with high inverter draw, since I am set-up to deal with that. Solar doing daily 80-99s might be better with 12s, not sure. AGMs are known better for low voltage sag with high draws, but have their own "issues."
What you have to do, to get it right for your own camping situation, is read this forum for ten years, do a thorough analysis, and then flip a coin! :)
