This rig got 200W of solar with an MPPT charge controller along with two flooded batteries. When installing on TPO roofs it is important to use a special sealant. Our traditional Dicor sealant is not compatible with TPO and will bubble.
This Class B rig came to us with two 12V 100Ah Group 31 AGM batteries externally mounted under each side of the chassis behind rear wheels. The owner, Roger, was very clever to route ropes through his frame to pull wires prior to him building out the interior. Roger also provided a shelf in the driver's rear wheel-well bay for mounting AM Solar inverter system.