#
BATTERY INSPECTION

BHE011718520W02

## Battery

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.

Test load chart

Battery | Current load (A)
--- | ---
50D20L | 150
75D26L | 195

Standard specification

Battery temp. (°C {°F}) | Minimum voltage (V)
--- | ---
4 {39} | 9.3
10 {50} | 9.4
16 {61} | 9.5
21 {70} | 9.6

## 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
  1.27-1.29 [20 °C {68 °F}]

## Back-up current

1. Verify that the ignition switch is off and that the key has been removed.

2. Disconnect the negative battery cable.

3. Measure the back-up current between the negative battery terminal and the negative battery cable.

  • If not within the specification, measure the back-up current while removing the fuses one by one from the inside of the main fuse block and the inside of the fuse block.

  Caution

  • Operating electrical loads while the back-up current is being measured can damage the tester.

  Standard current
  20 mA max.

4. Inspect and repair wiring harnesses and connectors of the fuse where the current decreased.