New US battery AGM 312 AH 6 volt batteries. Upgraded battery cables (#8) to #2. Added Trimetric Battery Monitor with shunt. Biggest change I have noticed is my lights don’t even blink when using Swintec slides or 6 point leveling system. My biggest slide used to slow down significantly when retracting.... but not any more. Leveling system works perfectly and no more out of stroke errors and on battery not using shore power or generator. Although it is true the RV should be close to level before using the system, I have successfully leveled the RV with as much as 5 degrees off from side to side with no errors or issues. I credit this to a much improved battery and current delivery to the jacks.