What??? You're using the house bank to start the engine? Do you have one
bank, or is the switch on
"BOTH"? You have a lot to learn if you want to do two days in a row!

Three way system, with 3 batteries now installed (two grp. 27, one 24).
Batteries are truly isolated (Not just the switch) and we have a 3rd group 24
for backup which is also isolated. There is a small 6 amp seperate charger
installed for that one now. The Charles charger is a 50 amp for the mains.

RB