Hello Arney,

NewBie tested a bunch of cells that were new and mismatched. I provided him with cells that tested on the ZTS tester from 0% to 80%, and he tested several samples of each. In each test, he coupled a lower tested cell with one that tested at 100%. There were no cases of venting during these tests. To get them to vent, he had to discharge the cell roughly 25 - 30% and couple it with one that was at 100%

I am not sure why this is so. We are still working on this.

I do suggest that in incandescent lights that drain the batteries in about an hour, that you start with cells that test at 100%. There is no reason to add any additional risk to your flashlight use.

Tom