Low $$ Lipo Charger
7.4v & 11.1v LI-PO Battery Balance Charger
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Features:
Charger for 7.4v & 11.1v Li-Polymer Battery
Charging indicator lights, auto cut off
Safe and reliable direct current charger
Dimension: 70(L) x 50(W) x 22(H)mm
Weight: 46g
Specification:
Input: 11 x 16V / 1.5A
Charging Current: 1A
Balance Current: 0.2A
(You will need a 12 volt power source)
(got mine off ebay)