dogshuttle

Does anyone know if you can mount a second battery inside the engine compartment or under the truck on the frame?
2010 F150 XLT...

oskerb

You can what would you be running? The second questionn would be charging it as I am sure the ALT will have issues charging both batteries so that will be an issue and so you would have to run the battery on a different circuit to power whatever your running and then find a way to charge the second battery. Like lowerriders they have to charge there battires after use.