Well, they are purpose built batteries for specific e-scooters. So it is not really straight forward to make an e-bike battery out of those. But maybe it is a good option if you can get your hands on some decommissioned (or stolen lol) rental scooter. >>1952957>id probably start with a very small battery to figure it out>gotta start somewhere
I would say that it's not that great of an idea to start with batteries at all.
First I'd assemble couple electronics circuit and get familiar with basic components like MOSFETs, resistors, etc. And get familiar with soldering and such.
After you know something (you don't need to have an EE degree in order to assemble a battery from off-the-shelf components), you can figure out why BMS is needed, what is balancing, what kind of fuses to use, and idk. Where to put kapton tape, where to use normal tape, and where to use fish paper.
There are a lot of guides on the internet that are kinda shitty. I'd suggest looking on high quality factory battery packs, how are they made, etc. >so would making a battery myself actually be much cheaper than just buying one?
Hard to say. Depends what are you gonna do.
New cells and stuff built up to high standards? Probably would be more expensive than factory battery, but at least 100% headache-free.
Used cells from e-waste would be definitely cheap, but its a bit... sketchy. >and are there any companies that actually do it properly?
Maybe. Ones that make custom battery packs. >am i gonna be paying a premium for it to be built properly?
I will find some example of shitty batteries, good batteries and mediocre batteries.