Need some guidance

[Nilao]

I have 3 agm deep cycle batteries to power the hotel loads and truck accessories. The starter is fired off of a maxwell 31/1800 start module and boy does that thing kick it in the ass. 20 degrees out? Might as well be a mild summer morning as fast as it turns over.

I ran my 12 volt electric blanket as well as gaming laptop the other night. Woke up to 11.8 on the deep cycles according to my inverter display...the start module fired it up like no bodies business. I've been impressed with it as it's approaching 4 years old and the deep cycles are 3 years old.