Crown Battery 18-85S-21

Warning: Battery replacement should be done by trained personnel only!

Old battery removed successfully?

New battery installed successfully?

Enter the voltage reading of the new battery

Sign off on the battery replacement

- 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 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

Upload the filled Crown Battery Inspection Report

Read and record the specific gravity and 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. Use the pilot cell temperature for the temperature correction of all the cells. It is not necessary to read the temperature of every cell unless the temperature difference between center cells and outside cells of the battery is 12°F or more

CAUTION: ONLY EXPERIENCED PERSONNEL SHOULD ATTEMPT BATTERY REPAIRS!

BEFORE PERFORMING ANY REPAIRS, REMOVE THE BATTERY FROM THE LIFT TRUCK. ALWAYS WEAR SAFETY GLASSES AND A FACE SHIELD WHEN WORKING ON OR NEAR BATTERIES

Sign off on the battery repair or replacement decision

Opportunity/ Opportunity Fast Charge battery procedure

Enter the current charge level of the battery

Opportunity charge is generally between 25-30 amperes per 100 ampere hour

Opportunity Fast Charge is generally 45-55 amperes per 100 ampere hour

Opportunity Charge will keep the battery operating between 20% and 80% of its state of charge throughout the work week and then on the weekend and equalize charge is performed.

OFC will allow you to charge a battery up to 80% in two hours or less

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