[serialk11r]

Your car uses that little? I've measured mine at >20 A key on (the only ammeter I have is meant for high current so it could be off by a few amps). I've measured about 120A charging for my 40Ah lithium titanate battery, so each second braking only powers the electronics for 5 seconds, probably less since I don't think the alternator output is that high, I'm guessing it's 130A. Some newer cars have 180-200A alternators which would do a little better but it's still not that much.

Basically a good reason to use higher voltage electrical systems. Actually, speaking of that, maybe you could? If you're running off battery + solar, you could double up on the battery, then double the alternator voltage, and then run the car off a DC converter.