Ford chassis battery keeps going dead. July 28, 2020, 02:35:15 pm Entegra vision 29 s. Ford chassis battery keeps going dead after it sits for a couple weeks. I have made sure everything has been turned off that feeds from the chassis battery. I have even turned the dash radio off by the switch. I just had the battery replaced under warranty. Two weeks now and its dead again? Looking to see if anyone has been experiencing this issue? Thanks in advance for any help or responses.