Designed and manufactured here in the USA, these replacement batteries are built with the highest quality. Battery cells are from either Japan or South Korea and are among the highest capacities available. The packs are assembled and double spot-welded (not soldered) for high reliability. A custom battery management system (BMS) PCB implements two independent safety circuits. The pack is assembled with custom 3D-printed end caps and then encapsulated in rubber-based polymer for a waterproof seal.
