LiFe receiver battery pack from Vapex. Nominal voltage 6.6V and 1600 mAh capacity. Fits 1/8 cars like all XRAY off-road cars (XB808 & XB9 etc).
Also works as a Transmitter battery in Futaba 4PX (some extra padding is needed).
Battery: 2S1P LiFe 6.6V
Capacity: 1600 mAh
Charging: Max 0.8A (0.5C) max 7.7V
Discharge: Max 4.8A (3C) cont.
Volt cut-off: 4.0V
Size: 88 x 27.5 x 16.5 mm
Weight: 69 g
Also works as a Transmitter battery in Futaba 4PX (some extra padding is needed).