Best auxilary batteries for Sprinter?

[GaryG]

I have a 2011 Roadtrek SS Agile on a Freightliner Sprinter chassis in need of new auxilliary batteries. It currently has a couple of 6 volt golf cart batteries wired in series. Any suggestions on the best replacement that wont break the bank would be appreciated!

[Ron J. Moore]

Replacing them with the type you currently have, they have lasted ten years.

[GaryG]

Actually they were installed by the previous owner 4 years ago (I purchased the RV 2 years ago) I was told by the previous owner that they were maintenance free. They weren't. They ran completely dry with cables installed over the caps making it impossible to check fluid level.

[eric1514]

Well, that's on you. Ron is still right. 2 GC2 6v batteries is probably your cheapest option. Costco or Sam's club has then for under $100 each.

[Rocinante]

If you want maintenance free and lead acid, your best option is AGM batteries. Lifeline and other brands make 6V AGM batteries that would fit into the same spots you have now. Sadly, they're more expensive than flooded batteries. So, it's up to you. Can you maintain fluid levels in the batteries where you're mounting them? If so, flooded deep cycle lead acid batteries will do the job. If not, you'll need to consider stepping up to AGM batteries. I wish I had a cheaper good answer for you.

[GeorgeRa]

I have a Fullriver 230Ah battery bank (115Ah 12V x 2) since 2013. They still hold the charge and will likely be replaced with the same ones when needed.

https://www.fullriverbattery.com/dc-series-batteries/

You could invest in a battery monitor with a shunt to know batteries SOC (State of Charge). This is a good one https://www.victronenergy.com/batter...mart#datasheet