Quote Originally Posted by oj88 View Post
...(cont'd)...
Results were ok at first, but then it developed a problem after about a week of use... spitting out ridiculous results. Returned it and got a more basic smart charger+tester (Lancol CAT-200).
Looks like 32-bit integer overflow divided by two, caused by the divide by zero (from 0 ohm internal resistance). Maybe there's a minimum resistance in the formula which is why it's a tiny bit less than 2147483648.