So, I had pretty much decided to get a EG4 12v/400A server rack battery to add to the 2 12v/100A SOK in my RV, to expand storage as I want to add a residential fridge. Tonight, however, Will put up a new video comparing server rack batteries where he noted his preference for the SOK build quality in a high vibration environment. The SOK, however, only comes in 48v. (pricing difference is another issue for a different discussion), The 48v version potentially could be a plus for part B of my plan (also for a separate discussion). My question is can I place a 48v to 12v buck converter in line and then place the battery in parallel with my existing 2 100 A SOKs to feed the inverter (12v / 3Kw)? If this would work what size (amp capacity) converter should I use and can you suggest a source? Most converters (48 to 12) I have found are 10 amps +/- and the largest so far is 30 amps. The alternative would be to go with the EG4 12v and use a racking system with supports to absorb some road vibration. This will be in a Motor Home as opposed to a travel trailer so a bit less jostling. Look forward to your input.