a ultra-compact, portable charging solution specifically engineered for Traxxas small-scale vehicles. 
It is the stock factory charger bundled with the popular 1/18 TRX-4M scale crawler series (including the Ford Bronco, Land Rover Defender, and High Trail models) as well as the 1/18 TRX-4MT monster trucks.
Power Source: Standard USB-A male input (plugs into wall adapters, power banks, or laptops).
Output Amperage: 2.0 Amps max fast charging.
Battery Compatibility: Strictly designed for 2-Cell (2S) 7.4V Traxxas LiPo packs (specifically optimized for the Traxxas 750mAh Power Cell #2821 and #2822 batteries).
Connector Type: Proprietary small-scale Traxxas iD connector.
Safety Cutoff: Automatically terminates the charge cycle when peak cell voltage is reached to prevent overcharging.