• Intelligent Control Built-in Microprocessor Control Unit (MCU) accurately and continuously monitors charging status, and provides the most efficient way to charge your batteries
• Four Battery Slots TN294 allows you to charge up to four 9V Li-ion batteries at the same time
• Protection Mechanism Safety timer protection - 8-hour safety timer prevents your batteries from overcharging.
• Save Money and the Environment Tenergy 9V Li-ion rechargeable battery can be charged and discharged for hundreds of cycles, reducing the number of disposed batteries
• Reverse-polarity Protection - Inserting your battery in the wrong direction will not damage this charger nor the batteries. Short-circuit protection - When short-circuiting is detected, TN294 will stop its operation at once to prevent damage to the charger and the batteries. Charger includes a 12-month warranty.