Take out a ninebot max charger port and the inverter. Cut the clear 2pin connector off the inverter, buy the replacement charger cord off of any after market sales online. Connect the new cord and the cord that was cut from the inverter and Connect them with connectors, solder, wire taps , electrical tape.etc.
Connect a 3 prong AC cord into the ninebot max charger port and plug it to a AC outlet. I noticed it cuts time at least by 1/4.
IDK.. I added a 4000 watt auto inverter in my car and I just charge them as I hunt for more scooters. It seems pretty efficient compared to a regular charger. I compared the two options and NB max would be fully charged at least 1.5 hrs sooner.
I'm just always curious on ways to charge more efficiently. Since I'm also doing food delivery at the same time.
extra income while those green lemons sitting passenger in my car.