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
Mex,
Earlier on you mentioned using Kwh's to determine capacity. I'm not quite sure how to go about doing that. I was actually hoping you would interpret the data I have, and explain how to render a figure in Kwh's. :)
I'm all for a more accurate way of doing things. Is it just a matter of multiplying each Ah's-used value, by their respective Vbatt values, and adding up all the products? I have 41 points of Vbatt vs. Ah's used recorded.
Here's what I'm thinking, and please correct me if I'm wrong:
After 2 1/2 hrs of the test, Vbatt was 12.18, and total Ah's consumed was 53.4. Fifteen minutes later, Vbatt was 12.16, and total Ah's consumed was 59.1. So, during that fifteen minutes, the average Vbatt was 12.17v, and 5.7Ah's were consumed... so, 12.17v x 5.7ah = 69.369 Wh's ???
My 41 data points would render 40 "average Wh's" per 15 minutes, for a total of ??? Wh's over 10 hrs.
Earlier on you mentioned using Kwh's to determine capacity. I'm not quite sure how to go about doing that. I was actually hoping you would interpret the data I have, and explain how to render a figure in Kwh's. :)
I'm all for a more accurate way of doing things. Is it just a matter of multiplying each Ah's-used value, by their respective Vbatt values, and adding up all the products? I have 41 points of Vbatt vs. Ah's used recorded.
Here's what I'm thinking, and please correct me if I'm wrong:
After 2 1/2 hrs of the test, Vbatt was 12.18, and total Ah's consumed was 53.4. Fifteen minutes later, Vbatt was 12.16, and total Ah's consumed was 59.1. So, during that fifteen minutes, the average Vbatt was 12.17v, and 5.7Ah's were consumed... so, 12.17v x 5.7ah = 69.369 Wh's ???
My 41 data points would render 40 "average Wh's" per 15 minutes, for a total of ??? Wh's over 10 hrs.
