Jeep Wrangler 2020 Owner's Manual page 485

Maintenance-Free Battery
Your vehicle is equipped with a maintenance-free battery.
You will never have to add water, nor is periodic mainte-
nance required.
WARNING!
• Battery fluid is a corrosive acid solution and can burn
or even blind you. Do not allow battery fluid to contact
your eyes, skin, or clothing. Do not lean over a battery
when attaching clamps. If acid splashes in eyes or on
skin, flush the area immediately with large amounts of
water. Refer to "Jump Starting Procedure" in "In Case
Of Emergency" for further information.
• Battery gas is flammable and explosive. Keep flame or
sparks away from the battery. Do not use a booster
battery or any other booster source with an output
greater than 12 Volts. Do not allow cable clamps to
touch each other.
• Battery posts, terminals, and related accessories contain
lead and lead compounds. Wash hands after handling.
• Vehicles with the Stop/Start system will be equipped
with two batteries. Both the main and the supplemental
batteries must be disconnected to completely de-ener-
gize the 12 Volt electrical system.
• Serious injury or death could result if you do not
disconnect both batteries. To learn how to properly
disconnect, see your authorized dealer.
• It is essential when replacing the cables on the battery
that the positive cable is attached to the positive post and
the negative cable is attached to the negative post. Battery
posts are marked positive (+) and negative (-) and are
identified on the battery case. Cable clamps should be
tight on the terminal posts and free of corrosion.
• If a "fast charger" is used while the battery is in the
vehicle, disconnect both vehicle battery cables before
connecting the charger to the battery. Do not use a "fast
charger" to provide starting voltage.
• Vehicles with the Stop/Start system will be equipped
with two batteries. Both the main and the supplemental
batteries must be disconnected to completely de-ener-
gize the 12 Volt electrical system.
• If the negative battery cables are not isolated properly it
can cause a potential power spike or surge in the system,
resulting in damage to essential electrical components.
(Continued)
SERVICING AND MAINTENANCE
WARNING! (Continued)
CAUTION!
483
7