Capacity Testing and 20 HR Rating
I'm thinking about doing a capacity test on my four GC2's. They have a 20hr rating of 215Ah. One thing I'm curious about is how the 20hr rating would have been determined. Being 6v, would they h...
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I did another long charge today, in preparation for tomorrow's capacity test. If I could, I would leave the bank on float overnight, but that's just not an option.
Vbatt was 12.59v with fridge load (0.9a).
Vabs set to 14.7v... which seems to always top out at 14.67? At low amps, voltage drop is 0.03v, so 14.64v at bank.
Started charge at 7:25am, Ambient Temps were at 46F (brrr... it was near 80F just a few days back). pm4b ran at 45a for about 30 seconds, then tapered quickly. By 7:50, amps were at 7.6a @14.64v.
By 1:00pm, amps had pretty much plateaued at about 3.2a... current bounced around a little for the last two to three hours of charge... ranging by about 0.2-0.3a?
2:15pm Last reading before dropping into float was ~ 3.2a @ 14.64v.
3:45pm less than 2a @ 14.15v (float) (turned fridge off)
As of 6:30pm, OCV @ 13.26v
Vbatt was 12.59v with fridge load (0.9a).
Vabs set to 14.7v... which seems to always top out at 14.67? At low amps, voltage drop is 0.03v, so 14.64v at bank.
Started charge at 7:25am, Ambient Temps were at 46F (brrr... it was near 80F just a few days back). pm4b ran at 45a for about 30 seconds, then tapered quickly. By 7:50, amps were at 7.6a @14.64v.
By 1:00pm, amps had pretty much plateaued at about 3.2a... current bounced around a little for the last two to three hours of charge... ranging by about 0.2-0.3a?
2:15pm Last reading before dropping into float was ~ 3.2a @ 14.64v.
3:45pm less than 2a @ 14.15v (float) (turned fridge off)
As of 6:30pm, OCV @ 13.26v
