24v Battery Maintainer ?

[Dave5Cs]

If thats the case whats the point in throwing the battery shutdown switch. I threw mine all the time and still something killed my start batteries. Thats why I am taking out the original cooker converter and have installed the marine smart charger. I just leave them both on and it keeps them charged. 12 amp 3 stage smart charger.
Dave

Sent from my SM-N920T using Tapatalk

[luvrbus]

With the natural lose,the DDEC and the B500 I am at a amp a day just like Tom described and the DDEC is wired directly to the batteries as it should be, the disconnect switch has nothing to do with the DDEC.I have the new style 39 starter it draws voltage if you leave the main disconnect on for the soft start feature on the starter

[thomasinnv]

Fyi for anyone wondering... i did some testing and placing a 12v maintainer on  the correct start battery will charge/maintain both batteries in the 24v bank thru the vanner. Good info to know. On my other bus i used a 50amp vanner to charge the 12v house bank off of the 24v engine alternator, but had no idea it would actually work in the reverse. I have an auxiliary 12v output on my solar charge controller that i may decide to use to maintain the start batteries.