6.6V 2000mAh 5C LiFe Reciever Hump Pack Battery

Lectron Pro 6.6V 2000mAh 5C LiFe Receiver Hump Pack Battery with Servo Connector.

6.6V means you won't need a regulator!

This 6.6V (2-cell) 2000mAh 5C LiFe (lithium iron phosphate, LiFePO4) receiver battery provides a great combination of performance and convenience. The LiFe batteries have some unique advantages over other battery options that make them ideal for use in radio systems:

Voltage stays above 5V throughout your entire run, so you get more consistent servo speed and torque than with NiMH batteries
Slightly lower voltage than Lipos means you can safely connect 6.6V (2-cell) LiFe batteries to your receiver without needing a voltage regulator
The 2000mAh capacity beats the 1300-1800mAh you'll find in standard flat and hump packs from most other suppliers

Specifications
Connector: JR (Universal) Servo Connector

Dimensions:
Length: 54mm (2.13 in.)
Width: 30mm (1.18 in.)
Height: 28mm (1.10 in.)
Weight: 81g (2.86 oz)