Mazda MX-30 2020 Owner's Manual page 456

Keep all flames and sparks
away from open lead-acid battery
cells because hydrogen gas is
produced from open lead-acid battery
cells while charging the lead-acid
battery or adding lead-acid battery
fluid:
Flames and sparks near open lead-acid
battery cells are dangerous. Hydrogen
gas, produced during normal lead-acid
battery operation, could ignite and
cause the lead-acid battery to explode.
An exploding lead-acid battery can
cause serious burns and injuries. Keep
all flames including cigarettes and
sparks away from open lead-acid
battery cells.
NOTE
Before performing lead-acid battery
maintenance, remove the lead-acid
battery cover.
Owner Maintenance
▼ Lead-acid Battery Maintenance
To get the best service from a lead-acid
battery:
Keep it securely mounted.
Keep the top clean and dry.
Keep terminals and connections
clean, tight, and coated with
petroleum jelly or terminal grease.
Rinse off spilled electrolyte
immediately with a solution of water
and baking soda.
If the vehicle will not be used for an
extended time, disconnect the
lead-acid battery leads and charge
the lead-acid battery every 6 weeks.
▼ Inspecting Electrolyte Level
A low level of electrolyte fluid will
cause the lead-acid battery to
discharge quickly.
1. Lower level
Maintenance and Care
6-23