Crown Battery 18-125P-11

Battery fully or partially discharged during normal operation?

Enter the battery's 8-hour charging cycle

Enter the finish charge rate (3‐6 amperes per 100‐ampere hours of the battery’s 6‐hour capacity rating)

Enter the on-charge cell voltages (2.50 to 2.70 volts per cell)

Enter the finish rate (3.5 amperes per 100 hours of the battery's 6-hour rated capacity)

Determining if a Battery is Properly Charged

- A certain amount of water loss is normal in all batteries and it should be replaced with "pure" tap or distilled water. In some areas around the country, tap water may contain chemicals or other impurities harmful to batteries. If water is needed, add just enough to bring the electrolyte to the proper level. Batteries should be filled only at the end of the charging cycle

- Overfilling is the most common error made when watering and it can cause tray corrosion. Since tray corrosion can cause extensive damage to batteries and vehicles, extreme caution must be taken to avoid overfilling the batteries

- Motive power battery trays are mostly made of steel that is protected with an acid resistant coating

Regardless of how good the coating is, if a break in the coating exposes the steel tray to sulfuric acid spilled from the battery, the acid will corrode the tray. How quickly the tray corrodes depends on how much and how often acid is spilled on top of the battery and how often the battery is cleaned

- The major cause of tray corrosion is overwatering or overfilling a battery. When overfilled, the electrolyte will spill on top of the battery. Although the water in the electrolyte will evaporate, the highly concentrated acid solution remains and gives the appearance of dampness. If the acid is not removed, the tray will eventually corrode

- To prevent corrosion, batteries should be cleaned any time the accumulation of dampness or acid becomes significant

- A good technique to follow while watering batteries is to use a flashlight focused on the vent hole being watered. Visually watch the electrolyte level rise and stop watering the instant the proper level is reached

- Each cell is filled the same way. Cell filling equipment that automatically fills batteries to the proper level is available

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. Be sure to include battery type, serial number, etc.

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

Check uniformity of battery cells

Enter the state of charge of the cells

Check if cells with a lower state of charge are up to the same level as the others

Select the frequency of battery cycling

Select the average discharge depth

Select the equalizing schedule based on battery operation

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

Old battery removed successfully?

New battery installed successfully?

Enter the number of operations/charge cycles of the new battery

Enter the expected life expectancy date of the new battery

Enter any issues encountered during the battery replacement

Sign off on the battery replacement