This is a Gens ace 2300mAh 6.6V 2S1P Li-Fe Battery for Radio Transmitter. Gens ace 2300mAh 7.4V 2S1P Li-Fe Battery Specs Capacity: 2300mAh. Compatibility: Futaba 3PV, 4PK, 4PM, 4PV, 4PLS, 4PX, 7PX, 10PX, 16SZ, and 18SZ.
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