Built-in intelligent microprocessor to make the charging faster, easier and safer. Engine boost/start function to quickly restore the dead battery and start the car at large output flow Charging current adjustable LCD digital display to visually monitor charging current & voltage, battery type & capacity and charging status Auto-repair the low voltage/power battery to enhance battery performance 8-stage programmed auto-charging to improve charging efficiency and extend battery life ① Voltage detection (12V/24V manual preset) ② Pulse repair ③ Soft start (low current charging) ④ Constant current mode stage 1 (Max. current) ⑤ Constant current mode stage 2 (75% of max current) ⑥ Constant current mode stage 3 (50% of max current) ⑦ Constant voltage mode ⑧ Float mode Display of warning symbols to remind the abnormal processes and auto-protection functions to ensure charging safety ① Reverse connection ② Short circuit ③ Over current ④ Over-load ⑤ Anti-surge ⑥ Over-temperature ⑦FULL-auto-stop With a cooling fan to ensure efficient operation for a long time Accessories: 1.8m charging cables with high quality clamps & 1.8m power cable with standard plug