It's a quest for E-speed... And I don't mean a dot com bubble "E." These instructions are proof of concept for, hopefully, bigger plans.
Step 1: Source Parts
Two scooters were used for this project. Both of which were found deralict and to be thrown away at Standford University. Dumpster diving may, or may not, be illegal. But better to ask forgiveness later.
The first scooter has rusted away and is completely un-ridable. It is a 36V machine.
The second is a 24V model, with heavily sulfated battery packs. Ridable, if you can get it power
Charger: I picked up a battery charger from harbor freight for other projects -- it cost me $10
That's all that's really needed -- lets get to it.