Battery Testing Reference

Data record tests.battery-capacity-load-test.equipment.battery-vrla.maintenance

Verified 2026-10-29 Confidence: High

Battery Capacity Load Test is specified for valve-regulated lead-acid batteries in maintenance testing at clause 7.18.1.3.B.6 of ANSI/NETA MTS-2023. The clause calls for a load test in accordance with the manufacturer's published data or IEEE 1188.

Value: valve-regulated lead-acid batteries

ProvenanceANSI/NETA MTS-2023 supports data record tests.battery-capacity-load-test.equipment.battery-vrla.maintenance, which is cited on the entry Battery Capacity Load Test.SOURCEANSI/NETA MTS-2023ANSI/NETA MTS-2023Licensed standard, clause 7.18.1.3.B.6DATA RECORDtests.battery-capacity-load-test.equipment.battery-vrla.maintenancetests.battery-capacity-l..Verified 2026-10-29ENTRYBattery Capacity Load TestBattery Capacity Load TestNo revisions
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StepItemDetail
SourceANSI/NETA MTS-2023Licensed standard, clause 7.18.1.3.B.6
Data recordtests.battery-capacity-load-test.equipment.battery-vrla.maintenanceVerified 2026-10-29
EntryBattery Capacity Load TestNo revisions
Subject
Battery Capacity Load Test (Test methods)
Kind
Equipment fact
Source
ANSI/NETA MTS-2023, clause 7.18.1.3.B.6, Maintenance Testing Specifications for Electrical Power Equipment and Systems, NETA. Publisher page for ANSI/NETA MTS-2023Publisher information page
Also stated in
  • The current standard states 12 months (battery_limits.py _next_test_months, degraded branch); the 90 percent trigger equals DEGRADATION_LOW_PCT 90 (IEEE P1188 draft D16 (September 2025)). FIST 3-6 (April 2020 (FIST 3-6)) stated every 6 months after capacity falls below 90 percent (VRLA); the current standard governs.
    Read the reference passage

    4.0 Valve-Regulated Lead-Acid (VRLA) Batteries (Gel Cells) - 4.6.2.1 Periodic Maintenance

    "Every 6 months, perform a capacity test, after the battery falls below 90% of the manufacturer's rated capacity during the annual capacity test."

    FIST 3-6, section 4.6.2.1, page 64 (braces in the original), April 2020. Agency copy of FIST 3-6

    The current standard governs; this passage is a public-domain description of the practice dated April 2020.

  • The current standard states 0.25 of expected service life (battery_limits.py INTERVAL_LIFE_FRACTION) (IEEE P1188 draft D16 (September 2025)). FIST 3-6 (April 2020 (FIST 3-6)) stated every year (VRLA); the current standard governs.
    Read the reference passage

    4.0 Valve-Regulated Lead-Acid (VRLA) Batteries (Gel Cells) - 4.6.2.1 Periodic Maintenance

    "Perform battery capacity test every year if the battery capacity is greater than 90% of the manufacturer's rated capacity."

    FIST 3-6, section 4.6.2.1, page 64 (braces in the original), April 2020. Agency copy of FIST 3-6

    The current standard governs; this passage is a public-domain description of the practice dated April 2020.

  • Stated independently by FIST 3-6, section 4.6.2, page 62 (April 2020).
    Read the reference passage

    4.0 Valve-Regulated Lead-Acid (VRLA) Batteries (Gel Cells) - 4.6.2 Capacity Tests to Determine Replacement

    "To establish whether a VRLA battery is nearing the end of its useful life, capacity test the entire battery as outlined below at 1-year intervals."

    FIST 3-6, section 4.6.2, page 62, April 2020. Agency copy of FIST 3-6

    The current standard governs; this passage is a public-domain description of the practice dated April 2020.

  • FIST 3-6, section 4.6, page 61 (April 2020).
    Read the reference passage

    4.0 Valve-Regulated Lead-Acid (VRLA) Batteries (Gel Cells) - 4.6 Testing of VRLA Batteries

    "Shorter testing intervals can be used depending upon battery specifications. The testing of VRLA batteries is very similar to the testing of vented lead-acid batteries. Refer to Section 3.6 for additional information on testing lead-acid batteries."

    FIST 3-6, section 4.6, page 61, April 2020. Agency copy of FIST 3-6

    The current standard governs; this passage is a public-domain description of the practice dated April 2020.

History

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DateChange
2026-10-29created

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Cite the governing standard for the fact itself; cite this page as the finding aid.

"Data record tests.battery-capacity-load-test.equipment.battery-vrla.maintenance." Battery Testing Reference. 2026-10-29. https://www.batterytestingreference.com/data/tests.battery-capacity-load-test.equipment.battery-vrla.maintenance/.