Quote:
Originally Posted by twindman
Doesn't seem like your math is accurate. 10 +5 = 15. 100/15 = 6 hours. Perhaps you assume only discharging to half power?
Regardless, I ran my furnace overnight from around 8 PM until morning and still had power. I have 2 6V golf cart batteries, so I guess that is different. Back when I had 1 12V battery I ran from 7 pm to 5 AM and was about drained. I was in the mountains where temps were probably 60 degrees around 7 pm and 35-45 at 5 AM.
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That's exactly right. You shouldn't discharge SLA batteries past 50%.
My 6v batteries are 225 AH. So yeah they will last longer.