Brand new and high quality. Features: Starts with constant current charging, the LED indicator is red. When the charging reaches the rated voltage, it switches to constant voltage charging, the current slowly decreases. When the charging current reaches the reverse current, the LED indicator lights up green. At this point, the battery has been charged to 90%-95%, and the battery continues to charge with a small current until it is full. Overvoltage protection. Overcurrent protection. Uses constant current and constant voltage charging mode, full stop. (Lead-acid battery charges in three stages) Used for charging lead-acid battery packs, lithium battery packs and nickel-hydrogen battery packs. Set the charging parameters according to the charging characteristics of the battery pack. (Note that it is set at the factory) Uses two-color indicator light, red light during charging, empty or full of this green light. Specification: Max. Power: 84W Input voltage: 100-240V AC Max. Output voltage: 42V Max. Output current: 2A Line frequency: 50-60Hz Efficiency (at load): >=85% Ripple: <=1%*Vo Temperature range: 0-45'C
Relative humidity: <65% Size: 13x5x3cm (5.3x1.2in) Notes: 1. Color deviation may be different due to different monitor settings. 2. We provide you with the best product and service, if you have any problems, please let us know, we will solve the problem ASAP. Thank you very much. Package includes: 1XPower Adapter

Charging port: 5.5mm*0.216in