So theoretically its possible to reprogram a es2 circuit board from a bird scooter that doesnt have the GPS Box (Bird Brain)? Because i came across a handle bar set with one...
Other then the handlebars being slightly different, (ES2's feel more plastic and no QR badge on the left like the ES4) There is a sticker on the bottom that usually tells what model it is- but chances are its usually gone or ripped. From what i can tell and what Ninebot's site says, the ES4 is just a ES2 with a extended battery included so it has a higher top speed (18.6mph) and longer range (28 miles).
The ex. battery in question looks like this but with rubber guards on the side.
From what i can assume, people must snatch these off of Bird Scooters quite easily cause all the ES4's i've seen have the port where its supposed to be- wide open.
+2 to the Harbor Freight kit since it has a head which allows you to use bits on ratchets and cause its bang for the buck.