I replaced the orignal House battery charging/BOOST Starting solenoid with a Cole Hersee Part number 24106. It's rated for 85 amps and the original one was rated for 125 amps. I never intended to use the 85 amp replacement to help start the van's engine so I felt and Winnebago agreed that 85 amps was sufficient if only used for charging. This was in July of 2013 when I was in the Whitehorse in the Yukon. NAPA was my only choice at that time.
Well I had low battery issues recently while in Canada that I thought might be another charging solenoid issue. Replaced the solenoid with another Cole Hersee #24106. Turned out to be bad batteries.
I had used the Cole Hersee #24196 85 amp solenoid I replaced to start the engine (used Boost Switch) on 3 occasions when a negative cable failed on the engines battery. It had also been charging the batteries for over a year.
I decided to cut the solenoid apart and see if the 3 engine starts or the battery charging had burned the solenoid's contacts. As you can see from the pics there are no signs of arcing or overheating anywhere.
Top of solenoid off:
Washer sets on contacts to complete the circuit when the coil is energized.
Bottom of copper washer (Connects the two contacts together for battery charging or BOOST Starting)