There are a couple good threads on IRV2 regarding trouble shooting the BIRD. On mine the Trombetta relay was bad brand new and it took me awhile to figure out what was going on. Replaced it with one off eBay for about 80 bucks and it has been fine since
I did install a rotary disconnect on the house batteries for longer term storage just to be sure they wouldn't completely discharge. I also turn off the disconnect on the Chassis Batteries for the long term storage
Sure way to many of these issues than wind up with dead batteries
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