Multi -functional portable charging device

The utility model discloses a multi -functional portable charging device, including the power pack, battery module, the dc -to -ac converter is installed in the power pack and is used for changing thestable direct -current voltage that battery module produced into can regulate and control alternating voltage, the alternating -current direct -current voltmeter is used for showing the real -time current -voltage value of charging device, safeties, through fastening knob setting on the input panel of power pack, through wire series on battery module, the short out way because of electric appliance wire is used for preventing, the too big power that leads to of electric current burns out. The utility model discloses a multi -functional portable charging device has effectively solved along with big gun storage battery performance unstablely, charges and maintains the difficulty, and function singleness, key element be a congruent difficult problem not, and the device utilizes maintenance free cell group as the pow