Crown Battery 125S

Warning: This inspection requires trained personnel with PPE!

Is the battery still in the vehicle?

If the battery is still in the vehicle, turn off the power switch and unplug the battery from the vehicle

Allow the battery to remain on open circuit (do not charge or discharge) for 30 minutes or longer

Fill in the Crown Battery Inspection Report. Include battery type, serial number, etc.

Read and record the specific gravity for all cells of the battery

Read and record the open circuit voltage for all cells of the battery

Read and record the pilot cell temperature

Record the temperature-corrected specific gravity readings. Use a temperature correction thermometer.

Warning: This test requires trained personnel with PPE!

Specific gravities at manufacturers specifications?

If not, adjust the specific gravities accordingly.

Battery cooled down to 75°F to 85°F?

If not, allow the battery to cool down before testing.

Battery discharged within 24 hours of completion of charging and acid adjustment?

If not, discharge the battery accordingly.

Any dead cells taken out of circuit?

- Test batteries using three testing instruments

- The specific gravity and open circuit voltage readings are normally in direct proportion to each other; consequently, a voltmeter or hydrometer can be used to check the battery

- The use of the voltmeter is a faster method of approximating the individual cell state of charge and can reduce dramatically the time required for routine battery checking. When using the voltmeter method, take specific gravity readings on the two cells having the highest and lowest voltage readings

- This will confirm both cells state of charge and accurately pinpoint the difference in the state of charge between them. The voltmeter is used when on‐charge or on‐discharge voltage readings are needed

- A battery thermometer is read like a normal thermometer. A proper thermometer should have specific gravity correction marked on its scale

- The hydrometer has an extra‐long scale to make readings more accurate. For ease of correcting for temperature, the specific gravity corrections are marked on the scale of the thermometer. The cell tester (voltmeter) has a 1.5 to 3.0 volt scale and an easy‐to‐handle, one‐piece terminal probe;

Warning: This procedure requires trained personnel!

Enter the current battery charge in amperes

Place the battery on charge at every opportune time (breaks, lunches, etc)

Enter the battery charge after opportunity charge

Opportunity Fast Charge will allow you to charge a battery up to 80% in two hours or less

Enter the battery charge after Opportunity Fast Charge

Is the charger rated higher than the connector on the battery?

If yes, battery modifications will be needed. These modifications include but are not limited to; dual cables, dual intercell connectors, cooling fans, battery recording device, thermistors and pilot contacts

Warning: This procedure requires trained personnel with PPE!

Check for any breaks in the coating of the steel tray

Check for any accumulation of dampness or acid on the battery

Check the electrolyte level of two or three cells each time the battery is changed

Add water to all of the batteries assigned to each charging area on a regular time schedule

Spot check the electrolyte levels periodically to determine if the proper levels are being maintained