The MACH-1 Racing 2S 150/300C  HV 4800mAh LCG Shorty LiPo Battery is a great battery option for anyone looking for a lightweight, shorty style battery. 
Weighing only 168 grams, the HV Shorty is lighter than a standard shorty pack. When compared to standard LiPo and LiHV, these cells deliver improved efficiency, lower operating temperatures, lower internal resistance, better run time, increased cycle life and increased voltage.
This pack is ideal pack for 2WD and 4WD stock and modified racing racers that want optimum voltage for the entire run. The improved efficiency of this pack will allow for lower operating temperatures and lower internal resistance. 
This gives users a more consistent battery pack. MACH-1 150C LiPo-HiV packs deliver the power needed by serious racers.
MACH-1 packs have double the cycle life when charged at .5C to 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 MACH-1 batteries are lighter, providing a higher capacity per gram ratio. With 7.6V nominal voltage, 150C discharge ratings, incredibly high charge rates and ten different models to choose from, MACH-1 packs are perfect for racers that demand the absolute best.
Features:
Lightweight than a hardcase a standard 2S LiPo pack of equal capacity.
Great runtime with a increase in voltage and punch.
MACH-1 LiPo batteries 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 4.2v LiPo cells.
Perfect for modified class racers looking to shave grams.
Maximum of 1C charge rate recommended for longest life.
7.6V nominal voltage.
5mm bullets.