Valve-regulated Lead Acid (VRLA) Battery Systems
Preventative Maintenance Program
| Description | Qtly, Semi-Annual and Annual |
| Record Battery Make/Model and Date Code | Q-S-A |
| Measure and record battery string current and voltage (metered reading for each battery string) | Q-S-A |
| Measure and record voltage from most positive to ground and from most negative to ground | Q-S-A |
| Measure and record AC ripple current going into battery | Q-S-A |
| Measure and record ambient temperature | Q-S-A |
| Measure and record pilot cell float voltage | Q-S-A |
| Inspect battery, rack, floor, and battery area and clean as necessary (applies to exposed battery jar surface only in absence of corrective maintenance needs) | Q-S-A |
| Clean exposed battery surfaces | Q-S-A |
| Visually Inspect for cracks in cells, leakage, and terminal or rack corrosion | Q-S-A |
| Measure and record the voltage of each cell/unit | Q-S-A |
| Measure and record the internal resistance of each cell/unit | S-A |
| Visually inspect each connection | Q-S-A |
| Measure and record connection resistances | A |
| Re-torque each electrical connection per manufacturers specification (Battery String Must Be 0ff-Line) | A |
| Inspect the integrity of the battery rack ( battery rack frames, brace and tie rods, etc.) | A |
| Confirm and record the presence of safety equipment, product labels as supplied by the mfg., operating manuals, etc. | Q-S-A |
| Review records maintained by customer for periodic log entries | Q-S-A |
| Record date of cleaning and inspection | Q-S-A |
| Provide completed inspection report | Q-S-A |
