Clarifications: > A quality GC2 golf cart battery (Trojan, US Battery, etc.) is 220-240 > amphours at the 20-hour rate, and costs $75-$150. They are good for 5-10 > years, and 600-1200 discharges to 50% or so state of charge.
No, not BOTH. One or the other. 5-10 years just sitting there doing nothing but waiting for the grid to go out (4 hours a year around here)... OR they barely will last 2 years in daily solar-off-grid use (and note, you are only getting 50% of their capacity just to last that long)... > In home backup use, they will die of old age before you wear them out. Yes, may as well just throw $6k in the trash every few years since you never use them. The cost of the electricity for the 4 hours average outage per year is only about 80 cents. (1 kW for 4 hours). Amazing how many people will spend $6k for that 80 cent problem. See http://aprs.org/off-grid-NOT.html Bob, WB4APR _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA)
