I have a single 12v 100Ah LiFePo4 battery in my 5th wheel now, but want to change it out for a larger form factor such as Enduro Battery in the 2-300 Ah rating. I don't have solar currently, but may/will add it at some point. My main objective is to add an invertor so I can run my absorption fridge while traveling and run the fireplace when it's cooler outside but not cold enough for the gas furnace. I do have a 5500 kw Onan generator for A/C loads. Boondocking is also something we want to do more of.
My question is, should I consider future proofing my build by starting off with a 24v system? I plan to use the Victron Multiplus II 2x120, but haven't decided on voltage rating yet. I do understand I would need a DC/DC converter, which adds cost. But is it more than the cost savings of lighter gauge cables smaller rated MPPTs for 24v? If you suggest 24v, should I consider 24v batteries in parallel or 12v in series? I know batteries prefer to be in series. At least with Enduro battery, two 12v 200 Ah batteries are only $40 cheaper than two 24v 100 Ah batteries. Voltage, Amp hours, and Kw hours would be equal in both scenarios.
Rob
My question is, should I consider future proofing my build by starting off with a 24v system? I plan to use the Victron Multiplus II 2x120, but haven't decided on voltage rating yet. I do understand I would need a DC/DC converter, which adds cost. But is it more than the cost savings of lighter gauge cables smaller rated MPPTs for 24v? If you suggest 24v, should I consider 24v batteries in parallel or 12v in series? I know batteries prefer to be in series. At least with Enduro battery, two 12v 200 Ah batteries are only $40 cheaper than two 24v 100 Ah batteries. Voltage, Amp hours, and Kw hours would be equal in both scenarios.
Rob