Mazda CX-30 2020 Owner's Manual page 488

Maintenance and Care
Owner Maintenance
▼ Inspecting Electrolyte Level
A low level of electrolyte fluid will
cause the battery to discharge quickly.
1. Upper level
2. Lower level
Inspect the electrolyte level at least
once a week. If it is low, remove the
caps and add enough distilled water to
bring the level between the upper and
lower level (illustration).
Do not overfill.
Examine the specific gravity of the
electrolyte with a hydrometer,
especially during cold weather. If it is
low, recharge the battery.
▼ Battery Recharging
NOTE
Before performing maintenance or

recharging the battery, turn off all
accessories and stop the engine.
To disconnect the battery, remove

the negative lead first. Install it last
when connecting the battery.
Be sure to remove the caps before

recharging the battery.
Do not quick-charge the battery.

If the battery quickly discharges

because, for example, the lights
were left on too long with the engine
6-38
off, slow-charge it as required by
battery size and charger capacity.
If the battery gradually discharges

because of high electric load while
the vehicle is being used, recharge it
as required by battery size and
charger capacity.
▼ Battery Replacement
Contact an expert repairer (we
recommend an Authorised Mazda
Repairer) for a battery replacement
purchase.