Nuprol NP 7.4v 1300mah 20c Lipo battery -

Type: LiPo - Lithium Polymer
Voltage: 7.4 v
Capacity: 1300 mAh
Connector: Small Tamiya
Cell Count: 2
Continuous Rate: 20 C at 26 A
Burst Rate: 40 C at 52 A
Configuration: Stick
Dimensions: 13 x 23 x 128 mm

Capacity - LiPo Batteries have an excellent Capacity to Size ratio

JST-XH Balance Leads
1-Year Warranty
High Quality Silicone Leads
State of Charge ≥60%