TRUEHVL™ is the only battery technology that cuts it with Worm Drive. TRUEHVL™ is designed specifically to power Worm Drive and delivers the performance and power you demand. Patented Stay Cool™ technology wraps each cell with a temperature controlling material that keeps cells cool and provides better performance. Our intelligent power management system monitors and optimizes each cell. An innovative battery design evenly distributes heat to extend run time. Together, these technological advances create a battery that's powerful enough for our legendary Worm Drive.The next generation of Worm Drive power is here.