Nitecore Universal Battery Charger Ci2 Dual-Slot Black. The Ci2 has a built-in intelligent system that automatically detects and charges up to 2 batteries. It has a maximum charging current of 3000mA which triples the charging speed thanks to the upgrade to USB-C input. Its LED power indicator provides users with real-time battery level and charging status. Ci2 provides fast and safe charging with multiple charging safeguards to prevent reverse polarity overcharge and overheating. The Ci2 features a USB-C port compatible with various power sources for quick and efficient charging. Specifications for Nitecore Universal Battery Charger: Manufacturer: Nitecore Color: Black Battery Type: Lithium Ion NiMH NiCd General Application: Casual Length: 5.83 in Weight: 4.25 oz Voltage: 9 volts 12 volts 5 volts Features of Nitecore Universal Battery Charger QC and PD input compatible Simultaneous battery charging 3000mA achieveable using single slot Automatic battery size detection Independent slots with automated charging Package Contents: Nitecore Universal Battery Charger USB-C Cable Nitecore 6952506495351: Universal Battery Charger Ci2 Dual-Slot Black