I wanted to chime in because I had the Error 18 on my Ninebot ES4 after trying MPC firmware settings that were too agressive and burnt out my scooter going up a steep hill (running from a coyote actually, but that's another story). I found all the discussion about soldering on circuitry on here to b...

I wanted to chime in because I had the Error 18 on my Ninebot ES4 after trying MPC firmware settings that were too agressive and burnt out my scooter going up a steep hill (running from a coyote actually, but that's another story). I found all the discussion about soldering and circuitry on here to ...