#10Battery Bank Inspection
Multi-Asset / Multi-Point Equipment Schedule
Inspect multiple transformers, panels, rooms, motors, or RCDs in this module without overwriting previous assets. Each item receives a permanent QR Sticker UID preserved across annual audits.
Sticker UID: OC-BATT-B5E9Standard Limits, Equations & Space Presets
IEEE Std 450 (Vented Lead-Acid) and IEEE Std 1188 (VRLA AGM/Gel) float voltage tolerances, cell-to-cell voltage spread, internal resistance trending against baseline, and discharge capacity thresholds.
Measured Inputs
Calculated / Evaluated Results
Acceptance: IEEE 450 (vented) and IEEE 1188 (VRLA). Cell float voltage within +/-2% of nominal, ohmic values trended against the commissioning baseline (>20% rise = investigate, >50% = replace), capacity >= 80% of rated with replacement planned below 80%.
Pending / Not tested — results stay neutral until valid measured values are entered.
- Pending
Total String Float Voltage
-
Total string float voltage = Number of cells x Measured average cell float voltage.
- Pending
Float Voltage Deviation
- %
Not tested - enter the measured value. Acceptance: Cell float voltage within +/-2% of the manufacturer nominal value [IEEE 450 §8 / IEEE 1188 §6.2]
- Pending
Cell-to-Cell Voltage Spread
- V
Not tested - enter the measured value. Acceptance: Spread <= 0.05 V across the string on float [IEEE 1188 §6.2 field criterion]
- Pending
Internal Resistance Rise vs Baseline
- %
Not tested - <= 20% rise: cell condition acceptable. [IEEE 1188 §6.4 trending guidance]
- Pending
Capacity vs Rated
- %
Not tested - < 80% of rated capacity: replace the battery. [IEEE 450 §8.6]
- Pending
Average Cell Temperature
- degC
Not tested - enter the measured value. Acceptance: Reference 25 degC; roughly every 8 degC above halves service life [IEEE 450 / IEEE 1188 Annex]
- Pending
Specific Gravity (vented cells)
-
Not tested - enter the measured value. Acceptance: Fully charged vented cell typically >= 1.215, no cell more than 0.010 from the string average [IEEE 450 §8.5]
Verification Checklist (0 / 16)
1Battery room mechanical extraction ventilation operating and maintaining hydrogen concentration well below 1% LEL [EN 50272-2 / IEEE 484]
2Room ambient temperature maintained at 20-25 degC (recognising every +8 degC above 25 degC halves VRLA service life)
3Visual inspection of all jars/monoblocks: zero casing cracks, post-seal acid creepage, plate buckling, or container bulging
4Terminal posts and lead-plated copper inter-cell links clean, neutralised, and coated with anti-oxidant grease
5Every inter-cell and inter-tier bolted connection torque-verified with insulated torque wrench to OEM Nm spec [IEEE 1188 §6.2]
6Individual cell/monoblock float voltages measured and within +/-0.05 V spread across the entire string
7Internal ohmic value (impedance / conductance / resistance) measured on every cell and compared with commissioning baseline
8Cells exceeding +20% ohmic rise flagged for shortened test interval; cells > +50% rise scheduled for replacement [IEEE 1188 §6.4]
9Electrolyte specific gravity (SG >= 1.215) and liquid level between high/low lines verified on vented lead-acid cells [IEEE 450]
10Charger temperature-compensated float voltage (-3 mV/cell/degC) and negative terminal pilot temperature probe verified
11AC ripple voltage (< 0.5% RMS) and AC ripple current (< 5 A per 100 Ah capacity) confirmed within OEM limits
12Infrared thermography scan conducted across all inter-cell connectors during discharge or recharge current flow
13DC earth-fault monitoring relay tested for positive-to-earth and negative-to-earth insulation integrity
14IEEE 450 / IEEE 1188 acceptance or periodic discharge capacity test result verified >= 80-90% of rated Ah
15Battery rack seismic restraint rails, acid-resistant spill containment bund, and insulator feet intact
16Plumbed emergency eyewash/drench shower within 10 s travel, acid spill neutraliser kit, and arc/chemical PPE available
General Notes
Free plan: 5 of 5 inspections / calculations left this month.