The XTAR VC2SL Battery Charger is a highly adaptable USB-C dual-slot charger compatible with both 3.6/3.7V Li-ion and 1.2V Ni-MH batteries, including the larger protected 21700 models. Featuring a clear and responsive LCD screen, it accurately displays battery status to keep you informed during charging. The VC2SL supports various charging currents (1x2A, 2x1A, and 2x0.5A), allowing you to tailor the speed to your needs. For added utility, it also tests battery internal resistance, offering insight into battery health. Compact yet powerful, it doubles as a portable power bank, while its built-in protections ensure safe, dependable charging anytime, anywhere.