Features: 1. Intelligent current diversion, two channels can be charged simultaneously: - When a 7.4V lithium battery is inserted into the XH-3P (three-pin) port for charging, cell1 and cell2 light up red, indicating that they are charging - When a 11.1V lithium battery is inserted into the XH-4P (four-pin) port for charging, the three lights of cell1/2/3 all light up red, and the two channels are charged simultaneously without interfering with each other 2. Built-in intelligent load identification chip, blocking excessive current and voltage, preventing overcharging, overvoltage, overload, and protecting equipment from damage 3. Aluminum alloy plug, anti-oxidation, corrosion-resistant, safer 4. The XH-3P and XH-4P charging end female plugs connected to the battery are connected to the battery end male plug, snap-on design, no leakage during charging, safe and tight 5. Gradually reduce the charging current according to the increase in battery charging power. When the battery voltage reaches 8.4V and 12.6V, it will automatically shut off the current and stop charging to prevent battery overcharging and damage 6. Suitable for charging 7.4V and 11.1V lithium batteries 7. Can charge a 7.4V lithium battery and a 11.1V lithium battery at the same time, with independent channel control, set overcharge protection/LED indication