7.6V 4100mAh 2S 120C Smart Pro Race Shorty Hardcase LiHV Battery (SPMX412S120HT)

Spektrum Smart Pro-Series 2S Shorty LiHV battery with 4100mAh capacity and a 120C discharge rating is built for high-performance RC racing. The compact shorty hardcase design keeps weight down and lowers the center of gravity for sharper handling in 1/10- and 1/8-scale vehicles, while Smart technology pairs with a compatible charger to automatically read health data and optimize charging for peak performance lap after lap.

Powered by graphene LiPoHV chemistry for a consistently higher voltage and low internal resistance, this pack delivers strong current to the motor and ESC even under heavy loads. Features include high voltage capability, a 5C max charge rate for fast top-ups, and double-sided flush-mount 5mm bullet connectors for easy installation. The redesigned case is tougher and more compact to support a lower CG, and Spektrum Smart's automatic storage discharge keeps the pack safe when idle, discharging to 3.90V after 72 hours of inactivity. An integrated microchip records essential data (brand, chemistry, capacity, cell count, cycles, temperature) and logs health events, with health information uploaded to the charger when connected, while charging on non-Smart chargers is possible with the included adapter.