Car DC charging power supply

DC input reverse, power protection devices protection does not boot.
Charging and power output has LED indication.
Rechargeable Battery Type: Suitable for 3 ~ 1AH ~ 4.5AH Lithium-ion battery pack 7 serial
Charge Power supply: DC 18V ~ 36V
Charging method: smart three-stage charging, constant current constant voltage ---- ---- constant, regulated power supply output
Protection: charger output Overvoltage protection effectively prevent the battery from over-voltage damage, smart reverse protection
Operating temperature: -40 ℃ ~ +50 ℃
Weight: 0.5KG