Energy Storage Battery Maintenance

The value of a storage system depends on usable capacity and safety margins over years of operation. Mottuum builds maintenance around inspection, balancing, cycling, safety verification and documentation, supported by a dedicated service team and training.

Typical issues in storage packs

Storage systems operate in shallow cycles or high-rate frequency regulation. Cell consistency drifts over time: one weak module pulls down the usable capacity of a whole cluster, causing capacity loss, SOC estimation error and frequent balancing.

Sealing and thermal management degrade in ways daily monitoring rarely catches. Airtightness loss, coolant seepage and hot connections are often discovered only after a fault. Scheduled maintenance turns these hidden degradations into measurable data.

Scope of maintenance

  • Module and cluster consistency assessment, voltage spread and resistance distribution
  • Balancing to a target voltage with CC-CV control
  • Full-pack capacity calibration and efficiency verification
  • Airtightness testing of packs and liquid cooling circuits
  • Inspection of connectors, harnesses and insulation
  • Archiving of service data for traceability

Process and equipment

ProcessPurposeEquipmentKey capability
Consistency inspectionSpot outlier modules and voltage trendsMBEA balancerDual hardware/software protection, one-click export
BalancingConverge voltage spreadMBEA / MBCDEACC-CV mode, high-current balancing
Cluster cyclingCapacity calibration and deep maintenanceMBCD pack chargerWide voltage range, built-in sensing and CAN, grid feedback
AirtightnessDetect sealing failures and leaksMBAT testerPacks and cooling pipes, Pa-level resolution
DocumentationTraceable O&M recordsAll equipmentID-linked, exportable data

Service models

Depending on site scale and in-house capability, choose equipment plus training, annual service or a fully managed model.

Equipment + training

Selection, operator training and process standards for owners with their own O&M team.

Annual maintenance

Scheduled inspection, balancing and safety testing with an annual health report.

Fault response & spares

Assessment, repair or replacement advice for abnormal modules, with spare parts support.

Turnkey solution

Design, equipment and execution as one package for projects without a dedicated team.

Tailored maintenance for your site

Share capacity, battery type, years in service and current O&M model, and we will propose inspection intervals, equipment and training.