The Ninebot G30 Battery model NEE1006-M, 10INR19/66-6 is a great 60cell 36v 500Wh lithium battery pack that popular and affordable. It comes off decommissioned fleets of rental scooters and therefore they are software locked. There's possibly a few ways to work around the lock to make these batteries usable but one off the easiest ways is just to replace the original bms with an open 3rd party off the shelf unit, this project facilitates this by using a custom PCB that neatly and easily allows installation.

Here are the parts you will need to complete this project

Ninebot G30 Battery - https://jag35.com/products/r12-36v

Off the shelf BMS - https://amzn.to/3zJII1A

PCB - https://www.pcbway.com/project/shareproject/Ninebot_60cell

Terminal blocks A 4.5x5.5x6 - https://s.click.aliexpress.com/e/_Dcgb24v

Header Pins - https://s.click.aliexpress.com/e/_DnEhWnn

Ribbon - https://s.click.aliexpress.com/e/_DBK29ul

Video project -