Fit forall kinds of helicopter models JJRC H11C H11D RC FPV RC Drone. 2pcs 602540 3.7v 500mah li battery composite to 1pcs 122540 7.4v 500mah li batteries ! 1/2/4/6/10 pcs 7.4V 500mAh Batteries 602540 with black SM plug.
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