Being the most compatible smart changer available, the NITECORE i8 Intelligent Charger can refill 8 batteries at a time. The 8 slots are arranged separately to ensure a compact size. It charges batteries of different sizes and chemistries with 1.5A charging current at the highest, including Li-ion, Ni-MH and Ni-Cd. It intelligently distributes input power to the 8 slots to maximize efficiency with its Active Current Distribution (ACD) technology. With built-in intelligent features, it automatically detects battery type and capacity upon battery installation, and then selects the appropriate voltage and charging mode. It can activate depleted protected Li-ion batteries if it detects one. With built-in safety mechanisms, the i8 protects against over charge, over discharge, battery reversal or short-circuit, ensuring the highest level of safety during use. Two onboard USB ports can charge devices like smartphones and tablets. Tested by international standards and insured globally, the i8 Intelligent Charger aims to offer the highest level of efficiency and safety to its users.