Certain electronic devices on the vehicle maintain a small continuous current drain or a parasitic load on the battery. A battery that is not used for an extended period of time will discharge. Eventually permanent damage will result.
In order to maintain the battery state-of-charge while storing the vehicle for more than 30 days perform the following actions:
When the battery cannot be disconnected, perform the following actions:
A battery that has remained in a discharged state for a long period of time is difficult to recharge or may be permanently damaged.