Ranking batteries using a Battery Beak?

[adciv]

Originally Posted by Ether

Sounds like the right thing to do. Not to be a pest, but what industry standard did you use? i.e. How much current and what cutoff voltage?

Short version, we used an Aircraft Battery Tester. 10A constant current discharge with a cutoff of 10V. We found that good batteries were typically producing 14Ah under these conditions. The 10A was chosen as that is approximately the 1-hour rate according to the spec sheets. It appears the new batteries were quite a bit better than we anticipated.

I'm considering purchasing a battery tester that was mentioned on CD last year. It's supposed to provide the constant current discharge & voltage logging.