ITEM NAME:2S Li-ion Lithium Battery 18650 Charger PCB Protection Board 8A 7.4V 8.4V FT.Upper working current: 8A. Resistance: less than 300m ohm. 1pc x protection board. Size: approx.41 16 3.5mm. Useful life: more than 50000 hours. Limited current: 15A.