Mazda 3 2019 Owner's Manual page 450

Maintenance and Care
Owner Maintenance
Wear eye protection and protective
gloves to prevent contact with battery
fluid:
Spilled battery fluid is dangerous.
Battery fluid contains SULFURIC ACID
which could cause serious injuries if it gets
in eyes, or on the skin or clothing. If this
happens, immediately flush your eyes with
water for 15 minutes or wash your skin
thoroughly and get medical attention.
Always keep batteries out of the
reach of children:
Allowing children to play near batteries is
dangerous. Battery fluid could cause
serious injuries if it gets in the eyes or on the
skin.
Keep flames and sparks away from
open battery cells and do not allow metal
tools to contact the positive (+) or negative
(-) terminal of the battery when working
near a battery. Do not allow the positive (+)
terminal to contact the vehicle body:
Flames and sparks near open battery cells
are dangerous. Hydrogen gas, produced
during normal battery operation, could
ignite and cause the battery to explode. An
exploding battery can cause serious burns
and injuries. Keep all flames including
cigarettes and sparks away from open
battery cells.
6-26
Keep all flames and sparks away
from open battery cells because hydrogen
gas is produced from open battery cells
while charging the battery or adding
battery fluid:
Flames and sparks near open battery cells
are dangerous. Hydrogen gas, produced
during normal battery operation, could
ignite and cause the battery to explode. An
exploding battery can cause serious burns
and injuries. Keep all flames including
cigarettes and sparks away from open
battery cells.
NOTE
Before performing battery maintenance,
remove the battery cover.