Jeep Wrangler Owner's Manual page 215

214 IN CASE OF EMERGENCY
WARNING!
 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.
 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.
 Never use a fast battery charger to start the engine,
as this could damage the electronic systems of your
vehicle, particularly the ignition and engine fuel
supply control units.
The battery in your vehicle is located in the left rear of the
engine compartment.
NOTE:
The positive (+) battery post is covered with a protective
cap. Lift up on the cap to gain access to the post.
Positive (+) Battery Post Location
See the following steps to prepare for jump starting:
1. Apply the parking brake, shift the automatic
transmission into PARK (P) and turn the ignition OFF.
2. Turn off the heater, radio, and all electrical
accessories.
3. Pull upward and remove the protective cover over the
positive (+) battery post.
4. If using another vehicle to jump start the battery, park
the vehicle within the jumper cable's reach, apply the
parking brake and make sure the ignition is OFF.
WARNING!
Do not allow vehicles to touch each other as this could
establish a ground connection and personal injury
could result.
WARNING!
 Take care to avoid the radiator cooling fan whenever
the hood is raised. It can start anytime the ignition
switch is ON. You can be injured by moving fan
blades.
 Remove any metal jewelry such as rings, watch
bands and bracelets that could make an inadvertent
electrical contact. You could be seriously injured.
 Batteries contain sulfuric acid that can burn your
skin or eyes and generate hydrogen gas which is
flammable and explosive. Keep open flames or
sparks away from the battery.