pianotuna wrote:
There is an "approximation" that may be used.
To convert Reserve Capacity (RC) to Ampere-Hours at the 20 amp rate, multiple RC by .52.
:h I'd be curious as to where that number came from as I've always understood the "approximate" formula to be RC x .4167, as detailed
in this article. Similarly, to convert AH to RC the formula is AH x 2.4. For example, if a battery's RC is stated to be 200 then it's approximate AH capacity would be 200 x .4167 = 83.34 AH. If it's AH rating is 83.34 then it's approximate RC would be 83.34 x 2.4 = 200.016.