21700 battery protected

SC2 2-Bay 3A Fast Battery Charger, QC3.0 USB-C Input with 0V Activation for 18650/21700/26650 Li-ion Batteries XTAR SC2 - 2-Bay 3A QC3.0 Fast Charger 3A Fast Charging (Max 3A per slot) for Quick Battery Replenishment QC3.0 USB-C Input for Fast & Versatile Charging 0V Activation Function Revives Over-Discharged Batteries Intelligent Identification & 3-Stage Charging Protection Wide Compatibility with 18650/21700/26650 Li-ion Batteries Technical Specifications Model SC2 Input