To simplify testing and prevent mistakes, batteries in each test were charged at 0.5A and discharged to 2.80V.
The discharge tests from 0.2A to 5.0A are done an a Turnigy Reaktor, and discharge tests with higher current are done with a Maynuo M9712C DC external load.
I could not locate an official data sheet, so the specifications were pulled from vendor websites.
This set of batteries didn't track well or smoothly. They did not get unusually hot while discharging, so they may be safe at the tested currents, but I would not be comfortable using them in devices with more than one of these batteries.
I read this in the “discussion” section on fasttech:
You never really know what you’re getting, right? They could possibly all be old “pulls” from something or other and have new shrink wrap on ’em … is it slightly frustrating, or is it just me ?? lol
From other sellers I might be more worried. So far I have not heard of any issues with fakes or duds from fasttech, and they list any used batteries in a separate listing under an “as-is” title.
Recently purchased by the Fasttech MNKE 26650 4000mAh.
Personally I have no complaints from their performance. Until the 7 Amps drawn by the battery , I can say that they have good operation and long .
They found Nowhere ANY test for these batteries .
Does anyone test this battery ???