https://www.amazon.com/Victron-Energy-Orion-Tr-240-Watt-Bluetooth/dp/B086R9H4QV/

This is the one I'm looking at for my setup. I did 24volts, but they also have the standard 12v to 12v ones too. I would only go 10Amps if your not doing a dedicated Alternator and using the built in one. You may get away with the 15Amp one if you have a really beefy alternator.