Battery storage O&M
A stationary battery storage system is a chemical and power-electronic asset that requires continuous thermal management, cell balancing, and protection monitoring. Terragreen provides specialised operations and maintenance for behind-the-meter and grid-connected Lithium Iron Phosphate (LFP) storage systems. We track State-of-Health down to cell level, service enclosure HVAC systems, and manage domestic spares.
A Terrakraft India company. Engineered with local spares and technical support for Zyntra storage products, and certified for third-party LFP/BESS architectures.
Beyond battery cells: maintaining the full balance of system
Battery system maintenance is not limited to logging voltage. It requires servicing power conversion, thermal cooling loops, and safety systems in parallel:
Rack-Level Diagnostics & Hardware BMS
- Monitoring cell-level voltage deviation, internal impedance drift, and State-of-Health (SoH) metrics to identify aging cells before they unbalance the series string.
- Active cell balancing verification: testing hardware BMS microprocessor boards and ensuring resistive/active balancing circuits function correctly.
Bi-directional PCS and Inverter Maintenance
- Inspection of high-speed DC contactors, pre-charge resistors, and AC circuit breakers.
- Power electronics thermal paste inspection, cooling fan replacement, and harmonic filter tuning.
Enclosure Thermal Management & HVAC
- Precision cooling is the single most critical factor in battery longevity. We service active air-conditioning compressors, clean condenser coils, check coolant levels in liquid-cooled packs, and verify front-to-back directed airflow across rack faces.
Fire Protection & Emergency Isolation
- Testing aerosol fire suppression cartridges, gas detection sensors (CO, H2, and smoke detectors), and emergency stop (E-Stop) hardwired isolation relays.
Energy that stays on.
We track State-of-Health down to cell level, service enclosure HVAC systems, and manage domestic spares.
In-country spares and responsible end-of-life handling
A major risk in industrial storage procurement is importing battery hardware from overseas vendors with no domestic service presence. When a BMS board or module fails in year seven, facilities face multi-month customs delays and stranded assets.
Terragreen bridges this risk through our integration partnership with Zyntra:
Regional Spares Depots
Replacement battery modules, BMS control cards, power modules, and sensors are stocked domestically in regional warehouse nodes.
Targeted Module-Level Swaps
Because our containerised and rack systems feature central service aisles and front-facing terminations, technicians replace individual damaged modules without disassembling entire battery strings.
End-of-Life Take-Back
For Zyntra battery products, end-of-life battery collection, recycling, and disposal are administered in full compliance with India's Battery Waste Management Rules and Extended Producer Responsibility (EPR) obligations.
Need to expand storage capacity? Explore our standalone storage EPC solutions.
Questions asset managers ask about battery storage maintenance
Can you maintain battery energy storage systems built by other manufacturers?
Yes, provided the equipment utilizes Lithium Iron Phosphate (LFP) chemistry and allows direct communication with the onboard BMS. We conduct an upfront data-access and electrical audit to confirm protocol compatibility (Modbus TCP, CAN, or RS485).
How do you measure battery capacity degradation over time?
We execute controlled capacity baseline tests during scheduled maintenance windows: charging the pack to 100% SoC, performing a calibrated constant-current discharge to safe cutoff voltage, and comparing delivered energy against the original factory commissioning curve.
What is included in the emergency response coverage for BESS?
If a critical BMS alarm, insulation resistance fault, or thermal threshold is triggered, the system trips into safe hardware isolation automatically. Our regional service engineers respond within written contract timelines to inspect the enclosure, review the fault log, and execute repairs.
Schedule an audit of your battery storage asset
Share your storage capacity (kWh), battery chemistry, inverter make, and operating environment. Our technical team will review telemetry access and provide an O&M proposal.