Well it was the perfect storm. I left a light on in the toy hauler. The cord to the camper electricity got unplugged. It run the two batteries down. Are they cooked? Getting ready to go to Florida. D...
If they were in good shape performing as intended beforehand, charging them back up with a smart charger would be my first move. You could have them load tested but it should be obvious if their performance is lackluster by comparison prior to this event occurring. Whether you choose to replace them now or later is your call, there are plenty of Samsclubs and Costcos on the way to Florida. Have a great time in the Sunshine state.