Reactive, preventive and predictive
Reactive maintenance fixes things after they fail — too late for critical power. Preventive maintenance inspects on a schedule and catches many issues, but still replaces parts on time, not condition. Predictive maintenance uses trending data to forecast failure and intervene only when a component is actually degrading — maximising uptime and battery life while minimising unnecessary cost.
What predictive maintenance monitors
The core signals are battery impedance (internal resistance of each block, trended over time), temperature at the battery and cabinet, run hours and event logs, and load and runtime trends. A block whose impedance is climbing relative to its peers is failing — it can be replaced before it collapses the string. Temperature trends reveal cooling or ventilation problems long before they shorten battery life.
Battery optimisation
Trending impedance across a string lets you identify and replace only the weak blocks early, extending the life of the rest and avoiding premature whole-string replacement. Over a fleet this cuts battery spend significantly while keeping protection intact. Combined with remote monitoring, weak blocks are flagged automatically rather than waiting for the next site visit.
Benefits and getting started
Predictive maintenance means fewer unplanned failures, longer battery life, lower total cost of ownership and evidence-based replacement decisions. It is delivered through a maintenance contract with periodic impedance testing plus continuous remote monitoring — so faults are trended and acted on before they become outages. See our battery replacement service for the replacement side.
Frequently asked questions
What is predictive maintenance for a UPS?
Using trending data — battery impedance, temperature, run hours and events — to forecast failure and replace degrading components before they cause an outage.
How does impedance testing help batteries?
It measures each block’s internal resistance over time; a block whose impedance is rising relative to its peers is failing and can be replaced before it collapses the string.
Does predictive maintenance save money?
Yes — by replacing only degrading blocks (not whole strings on a schedule) and preventing unplanned failures, it lowers battery spend and downtime cost.
How do I start predictive maintenance?
With a maintenance contract that includes periodic impedance testing plus continuous remote monitoring, so faults are trended and acted on before they become outages.