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: 2S1P / 7.4v / 2Cell
Constant Discharge: 30C
Peak Discharge (10sec): 40C
Pack Weight: 254g
Pack Size: 135 x 45 x 21mm
Charge Plug: JST-XH
Discharge plug: HXT4mm
Model no: T4000.2S.30HC 

Now officialy approved by ROAR for race use!