BONAI LCD Rechargeable Battery Charger For C, D, AA, AAA (Ni Mh or Ni Cd) and 9V Li ion) Universal With Discharge Function [Black]

【Wide Battery Compatibility】 Specially designed for maintaining and charging a vast range of batteries. It supports all standard sizes: cylindrical batteries including AA, AAA, C, and D, as well as 9V batteries (compatible with both Ni-MH and modern Li-ion chemistries). 【Precise Independent Charging】No more pairing restrictions. The four cylindrical slots and two dedicated 9V slots are completely independently controlled. You can mix and match different sizes and battery types simultaneously; the charger automatically detects and adapts to each cell's specific needs. 【Intelligent Status Visualization】The integrated LCD screen displays detailed charging progress for AA, AAA, C, and D batteries. Separate, dedicated LED indicators provide clear status updates for 9V batteries, ensuring you always know exactly when your power is fully restored and ready to go. 【Advanced Safety & Protection】Powered by a smart Microprocessor Control Unit (MCU) that monitors the entire process and utilizes minus delta V (-dV) cut-off technology to prevent overcharging. The system also automatically detects faulty or non-rechargeable batteries, safeguarding your devices from potential damage. 【Integrated Discharge Function】A manual discharge button allows you to selectively discharge Ni-MH cylindrical batteries (AA, AAA, C, or D) before charging. This process helps maintain long-term battery capacity and effectively minimizes the memory effect. Please note: The discharge function does not support 9V Li-ion batteries. [12 Months Warranty] Amazon returned windows close within 30 days. If you have a problem with the battery, Please Contact us via email:1. Go to Your Order2. Select Problem with order.3. Select Contact seller [Any Question] Please be patient, we will usually reply to your email within 24 hours. If there is no reply, you can try sending another email