Lectron Pro 450mAh 3S 11.1V 40C LiPoly Pack This 3-cell Lithium Polymer 450mAh battery pack is great for tons of applications, and is a great option for the E-flite Edge 540QQ!
Lectron Pro 1150mAh 3S 11.1V 30C LiPoly Pack This 3-cell Lithium Polymer 1150mAh battery pack is a perfect fit for the E-flite Blade SR, Blade CP Pro and many other popular helicopters and planes.
Lectron Pro 3000mAh 3S 11.1V 30C LiPo Pack - Blade 350 QX It includes an EC3 connector on the discharge leads, perfect for the Blade 350 QX and 450, Parkzone T-28 Trojan, F-27Q Stryker, Extra 300, Spitfire, and F4U-A1 Corsair, plus tons more models!