XH-M240 Battery Capacity Tester mAh mWh for 18650 Lithium Battery

Thanks for that :smiley: I suppose best practice would be to discharge a ‘known’ good quality cell and set it to a ‘set’ voltage - test a few down to the same V and see how it tallies up to the claim on wrapper. If it is miles out, maybe drop the voltage by 0.1v and retry.