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...
Forum Discussion
MEXICOWANDERER wrote:
This will render a thermonuclear-grade idea of capacity. For general comparitive testing where numbers are important a kWh meter is essential as is a Freas using temperature correction. A DC/DC converter with constant current control would be darned useful.
Graph values by the clock. Time, instant voltage, and SG. There is little need to take the accumulator down to 10 5 vdc unless you are doing OEM spec verification. I like algebraic inversion of the formula in which a battery is depleted to 50% SOC via hydrometer then kWh are noted. Battery Council International spec testing is soooooo YESTERDAY (granddaughterspeak).
Mex,
That is my plan... take readings every 20 minutes, and log everything down... Vbatt, SG, Ah's depleted, and after a half hour rest, ocv.
