Are you talking about the purple efest 20A? Because I'm about to cry. They have been waiting on my desk for weeks for the arrival of my IPV2.Lol do not use the Efest 20A 3100mAh.
There's a massive thread on ECF with links to test results. The ratings are ridiculously overstated. Apparently that particular battery goes berserk once you pull more than 6.5 or 7 amps.
On the other hand, the purple Efest 35A is also only a 20A continuous and 35A pulse rating. Yup
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