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2019 Promaster 3500 Silver high top 159"
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And pretty too. LiFePO4’s have gotten to a price point that they make sense. I’d add SOC monitoring too as your mixed use might make it hard to know what you have for juice. I used this one and it has been great.
Renogy Li Batteries have SOC monitoring built in. Either a phone app, if BT, or a $50 panel you plug in with a bit of CAT5.

@proeddie Be aware of swapping the spare into the van with a large SOC difference from the house. That is likely to trip the BMS and cause some head scratching. Maybe a lightweight voltage meter on both sides of the Anderson so you don't connect a 13.2v pack to a 14.2 volt pack :)
 
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