Can the average person crank out a car sized battery and some silicon? Hell no.
That sounds far more feasible than machining part considering battery building isn't all that complicated if you can get premade cells. It's mostly the anti-tamper measures that are the problem.
That sounds far more feasible than machining part considering battery building isn't all that complicated if you can get premade cells. It's mostly the anti-tamper measures that are the problem.