I just purchased one of these batteries, 4s1p 3700mah 20C
I have used it 4 times already ,charge/discharge, in my Quick of Japan EP-8 EX heli and I am very impressed with the power output, the way the pack is assembled, and just the over-all quality of this battery.. Excelent ! It is made by Enerland, the same cells as the Flight Power EVO 20s, and it was $66 dollars cheaper than the EVO 20 4s1p 3700mah.
Has anyone used these batteries before , and know anything about this brand of battery.
Here is a link to the Ebay store that I got it from
EP8 EX twinring frame
Quick of Japan