3.7V 500mAh 1S 25C Lipo Battery

This is the E-Flite LiPo Battery 3.7V 500mAh 1S 25C.

Specs:

Type: LiPo
Capacity: 500mAh
Voltage: 3.7V
Weight: 0.51 oz (14.5 g)
Configuration: 1S

Length: 2.35 in (59.5mm)
Width: 0.75 in (19.0mm)
Height: 0.30 in (7.5mm)
Maximum Continuous Discharge : 25C
Maximum Continuous Current : 12.5A