Crown Battery 75S

Warning: This procedure requires trained personnel!

Enter the current battery charge in amperes

If the charger is rated higher than the connector on the battery, proceed with the following modifications:

After modifications, adjust the charger settings as follows:

Enter the new auto equalize settings

Sign off on the battery opportunity charging

- To prevent corrosion and the resultant problems, batteries must be cleaned and dries routinely

Sometimes minor spills or overflows of electrolyte occur due to overfilling. Instead of giving the battery a general cleaning at this time, the moisture can be removed with rags or paper towels. (This should be immediately disposed of.)

The frequency of a general cleaning depends upon two factors:

1. How quickly dust, dirt, oil, and other foreign matter accumulates on the top of the battery, and 2. How quick the electrolyte spillage accumulates

When the top of a battery is "dirty" or looks damp, it is ready for a general cleaning. It could be as often as every two weeks or as infrequent as every six months, depending on the battery's environment and the care it receives. The average battery needs general cleaning every three months

To give a battery a general cleaning, use Powerhouse Cleaner's 3 Step Process (Corrosion Remover, Battery Cleaner, Rinse)

Powerhouse's Corrosion Remover was developed specifically for the removal of heavy corrosion and acid neutralization. For use, spray onto the corroded areas (will turn a rust looking color) and let sit for at least 10 minutes

Powerhouse's Battery Cleaner is a mixture of 2 parts cleaning detergent to 1 part acid neutralizer. Battery Cleaner is OSHA compliant and environmentally safe. For use, spray across the entire battery and let sit for at least 10 minutes

After the Corrosion Remover and Battery Cleaner have both sat for at least 10 minutes the battery can now be rinsed. The corrosion and acid should be neutralized and can be washed down the drain (note if lead pieces from the top of the battery are in the water they should be disposed of properly.)

This is the complete recharge of a battery after it has been fully or partially discharged during normal operation. In general, a cycle charge is based on an 8‐hour charging cycles, but can be extended, depending on need

A freshening charge is used to bring a battery to a fully charged condition before it is placed in service or when it has been standing idle for a short period. It takes about three hours at the finish charge rate (3‐6 amperes per 100‐ampere hours of the battery’s 6‐hour capacity rating)

When a battery is placed on charge, the opposite action of battery discharging takes place; the sulfate in the active material of the plates is driven back into the electrolyte

This reduces the sulfate in the plates and increases the specific gravity of the electrolyte and the electrochemical process continues until the on-charge cell voltages reach 2.50 to 2.70 volts per cell, depending on the type of charging equipment used

Finish rate or "normal" rate is that current which can be used safely any time charging is required and which can be continued after the completion of the charge without causing excessive gassing or high temperature resulting from overcharge. The finish rate is shown on the nameplate of Crown Batteries

Generally, the finish rate is 3.5 amperes per 100 hours of the battery's 6-hour rated capacity. A partially or completely discharged battery can safely handle currents much higher than the finish rate, but as it approaches full charge, whatever charging rate is used must be reduced to the finish rate

- A capacity test enables you to determine the capacity a battery actually delivers as compared to its rated capacity. This test can help determine if a battery should be repaired or replaced. When a battery delivers less than 80% of its rated capacity, the remaining capacity will decrease with each additional cycle

- It should be replaced before its cells fail and cause low-voltage operation of the vehicle, which can cause damage to the trucks electrical system

- A capacity test is performed by discharging a fully charged battery at a fixed rate (see chart on page 30) while monitoring specific test conditions, methods and procedures

- The six-hour rated discharge time is based on an electrolyte temperature of 77°F (25°C). Any deviation to that temperature, a correction to the six-hour rated time must be made

PROCEDURES FOR CAPACITY DISCHARGING:

1) Battery must be fully charged.

2) Specific gravities must be at manufacturers specifications, otherwise they must be adjusted accordingly.

3) Battery should be allowed to cool down prior to testing. Ideally, the temperature should be 75°F to 85°F. Otherwise the voltages will be affected by the temperature and the capacity must be temperature corrected.

4) Battery should be discharged within 24 hours of completion of charging and acid adjustment.

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