Battery lead-acid test report

How do you test a lead-antimony battery?

In the case of a lead-antimony battery, measure and record the specific gravity of 10% of the cells and float charging current. For chemistries other than lead-antimony and where float current is not used to monitor the state of charge, measure and record the specific gravity 10% or more of the battery cells.

When should a battery be tested?

When the battery shows signs of degradation (decrease in 10% from last test) or is below 90% of the manufacturers rated capacity it is recommended that the batteries be capacity tested annually.

What is a battery capacity test?

A battery capacity test will consist of a controlled current discharge of the battery systems in order to determine the capacity at the rate determined by the load reserve time requirements or at the manufacturer’s claimed performance rate for a specified time.

How do you test a battery rack?

Inspect and verify the structural integrity of the battery rack or cabinet. Using a calibrated and properly rated meter, measure and record the DC float voltage and current at the battery terminals. Is multiple strings involved, record the float current for each string.

How does a battery discharge test work?

The discharge current will be maintained within +/- 1% until the battery voltage measured at the battery terminals equals an average of the required low voltage limit. (For example, 60 cells x 1.75V = 105VDC battery terminal voltage) A battery capacity test system will be used to conduct the discharge test.

How do I know if a battery is safe?

Check for any unintentional battery grounds. Clean all battery surfaces of foreign material. Check the battery room/building for proper operating ventilation, HVAC and lighting. Ensure that there is unobstructed access and egress path around the battery. Check for proper operating safety equipment (i.e. eye wash, spill containment, etc.).