All Efests are rewraps, Efest doesn't manufacture batteries. Sony, Samsung, LG, and Panasonic are battery manufacturers, nearly all others simply rewrap b- or c-bin cellsc by them.I have the older efest and the newer efest, I heard the old ones were rewrapped. The LG HG's will work great for you since your not running anything that is going to eat 20 amps
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