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BESS maintenance: what a battery system actually needs

Far less than a generator, but not nothing. Here is a realistic schedule.

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What goes away

No oil changes, no fuel filters, no coolant flushes on an engine, no injector service and no load-bank testing to prevent wet stacking. That is most of a generator's maintenance cost.

What remains

Service from PulseTrek

Remote monitoring lets us see issues before they become downtime. Scheduled service and O&M are available: see installation and service.

A simple annual rhythm

Before each deployment: walk-around check, connections, tow gear and a monitoring check. Quarterly: clean vents, check seals and torque. Annually: a full inspection, firmware updates and a capacity check against the original figures.

Keep a log. It helps with warranty claims and resale, and it shows which units are working hardest in a fleet.

Questions answered

Frequently asked questions

Does a BESS need maintenance?

Very little compared with a generator: inspections, clean vents, connection checks and firmware updates.

How should a BESS be stored?

At partial state of charge, in a dry place within its temperature range, with a periodic check.

How often should a BESS be inspected?

Before each deployment, with a quarterly check and an annual full inspection.

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