The OPUS BT-C3100 Smart Digital Intelligent 4-Slot Battery Charger is a versatile and precise charging solution for your rechargeable batteries. Here's why it's a must-have for any battery enthusiast:

• Four Independent Charging Channels: Each slot is equipped with an independent charging control chip, allowing precise monitoring and control of the charging process for each battery.
• Customizable Charging Current: Choose from four levels of charging current (200/300/500/700/1000mA) for optimal charging performance based on your battery type and quantity.
• Discharge Capacity Display: The discharging mode accurately displays the battery discharge capacity, and the charger automatically identifies fully charged batteries at 4.21V.
• LCD Screen: The built-in LCD screen provides real-time monitoring of charge/discharge capacity, voltage, current, and time for all four battery channels.
• Multiple Working Modes: Enjoy the convenience of charge, discharge, repair, and capacity test modes, as well as battery internal resistance testing for comprehensive battery management.
• Wide Battery Compatibility: This charger supports various lithium and Ni-MH battery models, including 10440, 14500, 16340, 18500, 18650, 26650, 26500, AA, AAA, C, and D sizes.
• Temperature Control: The charger operates within a safe temperature range of 0 to 40 degrees celsius, with a built-in fan to prevent overheating.

The function buttons allow for easy mode selection, display customization, current adjustment, and individual channel mode settings. With its user-friendly operation and comprehensive features, the OPUS BT-C3100 is a reliable and efficient battery charging solution.