Originally Posted by Davydd
I never auto start and really never have to idle the engine with 800ah of lithium ion batteries. I’ll drive routinely and charge the engine that way. It is just a belts and suspenders feature....
With all the other amenities we wanted, 600ah is all I could figure out how to physically fit in our Promaster, which of course is about 3' shorter than your Sprinter. Your extra 200ah would be nice for summer boondocking, but we can still run our air conditioner to get about 7.5 to 8 hours of sleep with just one hour of engine idle time so that's not too hard on us or the engine.
And the Viper does allow a remarkable number of options such as programmable "quiet time", as your system does. My gripe is how hard the Viper is to program. It has to be done with various combinations of pressing five buttons on the fob different numbers of times, listening for certain numbers of beeps in response, and the ways to get it wrong are legion. I'd still love to replace it with a different remote start/stop module that's more intuitive or user friendly.
It's certainly possible ARV's system is 100% custom. If anyone could do that, it's them. But I doubt they'd invest the R&D time, when the alternative is to find a start/stop module they like and hack it to interface with the SilverLeaf and to deliver the longer run time. Or else maybe they found one that allows the longer run time as a standard feature. Either way would be a lot less expensive to get to market than starting from scratch.