Glad you are back in business and you can hear the use/store coach latching relay operating and releasing. But to ensure the batteries are actually being charged (if you haven’t already) you should buy yourself a cheap multimeter and learn how to use it. Use the DC voltmeter portion and take a reading across both your coach and chassis batteries when charging on AC shore power or via generator and you should read around 13.1 volts or higher under normal charging conditions on each string. Some other folks on the forum are buying a dual voltmeter gauge off Amazon to allow permanent monitoring of both battery strings……but that would require you to do some safety fusing and wiring off each string to the meter. Worth it for peace of mind……or just do the voltmeter sample every week or so to make sure all is normal. A multimeter comes in very handy for all your RV electrical checks/troubleshooting.