The new number one in performance and price!
The new Turnigy Lipoly packs deliver full capacity at the said C rate.
You wont find a better deal in Lithium Polymer batteries anywhere!

Spec.
Minimum Capacity: 4000mAh
Configuration: 4S1P / 14.8v / 4Cell
Constant Discharge: 30C
Peak Discharge (10sec): 40C
Pack Weight: 452g
Pack Size: 148 x 50 x 29mm
Charge Plug: JST-XH

Discharge plug: 4mm Bullet-connector