Mazda 3 - Battery Inspection; Electrolyte Gravity; Battery Voltage

Mazda 3 Workshop Manual – Engine + Wiring Diagrams + Diagnostic Trouble Codes
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BATTERY INSPECTION
B3E011718520W03
Warning
• Since battery acid is toxic, be careful when handling the battery.
• Since battery acid is highly corrosive, be careful not to allow it to contact clothing or the vehicle.
• In case battery acid contacts skin, eyes, or clothing, flush it immediately with running water.
Especially if the acid gets in the eyes, flush with water for more than 15 min and get prompt
medical attention.
Electrolyte gravity
1. Measure the electrolyte gravity using a hydrometer.
• If it is less than the specification, recharge the battery. (See BATTERY RECHARGING.)
Standard electrolyte gravity
1.22-1.29 [20 °C {68 °F}]
Battery voltage
1. Inspect the battery as follows:
Step
Inspection
Action
1
Measure the battery positive voltage.
12.4 V or
more
Go to Step 3.
Less than
12.4 V
Go to the
next step.
2
Quick charge for 30 min and recheck voltage.
12.4 V or
more
Go to the
next step.
Less than
12.4 V
Replace the
battery.
3
Using the battery load tester, apply load current (see load test chart)
and record battery voltage after 15 s. Is voltage more than
specification?
Yes
Normal
No
Replace the
battery.
Load test chart
Battery
Current load (A)
50D20L
150
75D26L
195
80D26L
195