VMAX XTR12-155 12V 155AH AGM Deep Cycle Battery for Golf Carts and EV's, high performance and maintenence-free, 12V 155Ah, BCI Group Code GC12 AGM battery

I bought these batteries to install in a 4x4 Sprinter camper van in the passenger seat base. Unlike Lithium batteries, AGMs can be recharged below 32F after a day of skiing in the mountains. Two of these batteries fit perfectly with some 2"x6" boards around them to prevent sideways movement (see photos). Most of the reviews on Amazon are for the less rugged version of the battery, the SLR12-155, and it definitely seems like these batteries have all of the good attributes of the other ones. I'm primarily charging them using a Sterling Power 30 AMP Battery-to-Battery charger that is connected to the 100 amp hour AGM vehicle battery. I also got a Vmax AC-to-DC charger (15 amp) though I recommend getting the 20 amp version) so I can recharge/maintain the batteries when plugged into shore power.