Regular maintenance of UPS, inverter, and battery systems is essential to prevent unexpected failures, protect critical loads, extend equipment lifespan, and ensure manufacturer warranties remain valid. Poorly maintained power-backup systems are one of the leading causes of avoidable downtime, battery failures, and costly emergency call-outs.

We provide nationwide Preventative Maintenance Inspections (PMIs) and servicing solutions for all makes and models of UPS, inverter, and battery systems, supporting residential, commercial, and SME environments across South Africa.

Our Maintenance & PMI Process

Each maintenance visit follows a structured, methodical inspection process designed to identify risks early, verify system performance, and ensure your backup power system operates as intended when it’s needed most.

Our maintenance process typically includes:

• Battery Health Assessment
  Visual inspection, voltage checks, impedance or conductance testing (where applicable), and assessment of battery condition, charge state, and expected remaining life to reduce the risk of sudden battery failure.

• Thermal Imaging & Temperature Checks
  Identification of hot spots on batteries, cabling, breakers, terminals, rectifiers, and inverter components to detect loose connections, overloading, or failing components before they lead to outages or damage.

• Load & Functional Testing
  Verification that the UPS or inverter can support connected loads under real-world conditions, including transfer testing, inverter operation, bypass functionality, and alarm verification where site conditions allow.

• Electrical Connections & Cabling Inspection
  Inspection of DC and AC connections for looseness, corrosion, wear, overheating, or incorrect terminations that may compromise system reliability or safety.

• Charger, Rectifier & Inverter Checks
  Testing of charging voltages, float and boost settings, rectifier operation, inverter output quality, and system configuration to ensure correct operation and compliance with manufacturer specifications.

• Cooling & Ventilation Maintenance
  Cleaning and testing of fans, filters, and airflow paths to prevent overheating and premature component failure.

• Firmware, Logs & System Configuration Review
  Review of event logs, alarms, system history, and firmware versions (where applicable) to identify recurring faults, abnormal events, or configuration issues.

Detailed Reporting & Recommendations

After each service, a detailed service report is completed and issued, documenting:

• System condition and test results

• Identified risks or non-compliances

• Battery condition and replacement recommendations

• Corrective actions required (if any)

Should repairs, upgrades, or battery replacements be required, a formal quotation is provided for approval before any additional work is carried out.

Trusted Nationwide Support

Whether you operate a single residential backup system or a multi-site commercial environment, Cooper Power delivers consistent, professional nationwide maintenance services tailored to your equipment, application, and operational requirements.

Keep your power-backup systems reliable, compliant, and ready when the grid fails.
Contact Cooper Power today to schedule your nationwide UPS, inverter, or battery maintenance service.