Figured there had to be something else drawing on these batteries.. there is no way an entertsinment system turned off is drawing enough current to kill those batteries in a few days and the CO detector would not either unless defective...
But the rigs brakes on will kill batteries quickly.. hopefully he inspects the brake magnets and wiring going to each for overheat indications.
A simple x chock or two good pieces of 4x4 would work well t9 block the tires in the future.
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