The ProTek R/C 4S 120C Graphene + HV 6500mAh LiPo Battery is a great battery option for anyone looking for a high capacity, high output 4S battery. Weighing 578 grams, the 4S HV is lighter than a standard 4S pack, with much higher capacity. This provides more runtime, and a dramatic increase in voltage and punch over the course of a run. 

This battery is designed to have improved power to weight ratios while maintaining a low CG. The improved efficiency of this pack will allow for lower operating temperatures and lower internal resistance. This gives users a more consistent battery pack. ProTek Graphene + 120C Packs deliver the power needed by serious racers and enthusiasts alike.

Lab testing has shown that ProTek R/C Silicon Graphene packs have double the cycle life when charged at 1C rates, and can be charged at higher amp rates, with less risk of damage to the pack. More importantly, the discharge curve is flatter, meaning the cells maintain higher voltage throughout the discharge cycle with no significant drop off. Additionally, when compared to conventional LiPo batteries Silicon Graphene batteries are lighter, providing a higher capacity per gram ratio. With 7.6V nominal voltage, 120C discharge ratings, incredibly high charge rates and ten different models to choose from, ProTek R/C 120C Graphene + packs are perfect for racers and bashers that demand the absolute best.

NOTE: This battery is not recommended for high current draw 8S applications. 

Features:

• Lighter than a hardcase 4S LiPo pack of equal capacity

• Improved power to weight ratio and a lower overall CG

• More runtime, with a dramatic increase in voltage and punch

• Silicone Graphene can handle more abuse and deliver more current than a standard LiPo battery

• Improved efficiency, lower operating temperatures, and lower internal resistance!

• Increased run time, increased cycle life and increased voltage!

• More capacity gram for gram when compared to standard LiPo cells

• Perfect for stock class racers looking to shave grams

• 10C max charge rates - 1C charge rate recommended for longest life

• 15.2V nominal voltage

• 5mm bullets and 5mm to 4mm bullet adapters included

• Replacement XH4S balance adapter also available separately (PTK-5331)

NOTE: While these batteries are LiHV cells, they can still be charged the same as a standard LiPo with a standard LiPo charger. The overall voltage and capacity will be slightly less than when charged to LiHV specs, but the performance will be better than a standard LiPo thanks to the flat discharge curve, reduced weight and low internal resistance. When charged to 8.4V, these packs will still offer a noticeable advantage when compared to a standard 7.4V LiPo pack.