Buick Encore GX 2023 Owner's Manual page 270

Vehicle Storage
Warning
Batteries have acid that can burn you and
gas that can explode. You can be badly
hurt if you are not careful. See Jump
Starting - North America 0 307 for tips on
working around a battery without
getting hurt.
Infrequent Usage: Remove the black,
negative ( ) cable from the battery to keep
the battery from running down.
Extended Storage: Remove the black,
negative ( ) cable from the battery or use a
battery trickle charger.
Negative Battery Cable Disconnection
Warning
Before disconnecting the negative battery
cable, turn off all features, turn the
ignition off, and remove the key,
if equipped, from the vehicle. If this is
not done, you or others could be injured,
and the vehicle could be damaged.
Caution
If the battery is disconnected with the
ignition on or the vehicle in Retained
Accessory Power (RAP), the OnStar
back-up battery will be permanently
discharged and will need to be replaced.
1. Make sure the lamps, features, and
accessories are turned off.
2. Turn the ignition off and remove the
key, if equipped.
3. Loosen the negative battery cable nut (1).
4. Remove the negative battery cable (2)
from the battery.
Vehicle Care
Negative Battery Cable Reconnection
Caution
When reconnecting the battery:
Use the original nut from the vehicle
to secure the negative battery cable.
Do not use a different nut. If you
need a replacement nut, see your
dealer.
Tighten the nut with a hand tool. Do
not use an impact wrench or power
tools to tighten the nut.
The vehicle could be damaged if these
guidelines are not followed.
Caution
Do not use paints, lubricants, or corrosion
inhibitors on the nut that secures the
negative battery cable to the vehicle. This
could damage the vehicle.
1. Install the negative battery cable (2) to
the battery.
2. Install the negative battery cable nut (1)
and tighten.
3. Turn the ignition on.
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