Battery Protection During Vehicle Storage
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2002 GMC Yukon XL, 2002 GMC Yukon, 2002 Chevrolet Tahoe, 2002 Chevrolet Suburban, and 2002 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
Certain devices on the vehicle maintain a small continuous current drain on the battery. A battery that is not used for an extended period of time will discharge. Eventually permanent damage will result. Discharged batteries will also freeze in cold weather. Refer to Battery Inspection/Test (Non-HP2) .
In order to maintain a battery state of charge while storing the vehicle for more than 30 days:
- Ensure that the green dot is visible in the built-in hydrometer.
- Disconnect the battery ground to protect the battery from discharge by parasitic current drains.
IMPORTANT:
If a green dot is not visible in the hydrometer, charge the battery. Refer to Battery Charging .
CAUTION:
Refer to BATTERY DISCONNECT CAUTION
.
When the battery cannot be disconnected:
- Maintain a high state of charge.
- Establish a regular schedule for recharging the battery every 20-45 days.
A battery that has remained in a discharged state for a long period of time is difficult to recharge or may be permanently damaged.