Home Battery Maintenance & Troubleshooting

How much maintenance does a home battery need?

The short answer: very little. A modern home battery with LFP cells is designed to last 15–25 years with minimal maintenance. There are no moving parts, no fluids to top up and no filters to replace. The battery itself is a sealed system that you do not need to open.

That said, there are a number of simple checks and actions that optimise lifespan and performance. Just like a boiler or car, a home battery also benefits from periodic attention.

Maintenance schedule: monthly, biannually, annually

Below is a practical schedule with the most important maintenance tasks:

• Monthly: Check the app for error messages or warnings. Verify that the battery is charging and discharging normally.
• Monthly: Check the ventilation openings — remove dust or obstructions blocking the airflow.
• Biannually: Clean the exterior with a dry cloth. Inspect cables for damage or loose connections.
• Biannually: Check the firmware version and install available updates.
• Annually: Check the capacity indicator in the app. A decline of more than 5% per year may indicate a problem.
• Annually: Inspect the surroundings: is the room still dry? Is there sufficient ventilation? Is the temperature within specifications?

Common problems and solutions

Even the best home battery can occasionally experience a fault. Below are the three most common problems with solutions you can try yourself:

Problem: battery no longer charges

Possible causes: The inverter is switched off, the solar panels are producing insufficient power (cloudy/night), the battery has reached its maximum state of charge, or there is a communication fault. Solution: Check whether the inverter is on and correctly connected. Check the app to see if the battery is already at 100%. Restart the system by switching the battery off for 60 seconds (main switch) and turning it back on. If the problem persists, check the fuses in your fuse box.

Problem: battery discharges faster than expected

Possible causes: Higher temperature in the room (battery cools more actively), cold temperatures (less available capacity), outdated firmware, or early cell degradation in older systems. Solution: Check the ambient temperature — in cold conditions, temporarily reduced capacity is normal. Install the latest firmware update. Check the app for cell balancing issues. For systems older than 8 years: have a professional capacity test carried out.

Problem: app shows no data or connection lost

Possible causes: WiFi connection lost, router restarted, app update needed, or the gateway/dongle has frozen. Solution: Check your WiFi connection and whether the battery is still connected (LED indicator). Restart the WiFi module or gateway. Update the app to the latest version. As a last resort: reset the WiFi pairing via the physical button on the unit and reconnect.

Error codes by brand: what do they mean?

Here is an overview of common error codes for popular home battery brands and what they mean:

When to call in a professional

Not every problem can be solved yourself. Call in a professional in the following situations:

• Unusual sounds (clicking, buzzing, beeping) that you have not heard before
• Visible damage to the housing, cables or connection points
• Burning smell or discolouration of the housing — switch off the battery immediately and call an installer
• Capacity loss of more than 20% compared to the original specification, outside winter conditions

Firmware updates: why they matter

Manufacturers regularly release firmware updates for home batteries. These updates improve not only performance but also the safety and lifespan of your system. Key improvements delivered via firmware:

Most updates are installed automatically via WiFi. Regularly check the app for available updates. Never skip firmware updates — they often contain important security patches.

Conclusion: minimal maintenance, maximum lifespan

A home battery is one of the few investments in the home that requires virtually no maintenance. With a few simple monthly checks and timely firmware updates, you will get the maximum out of your system. Most problems can be resolved with a simple restart.

At Home Energy Solutions, we offer after-sales support for all home batteries we sell. Running into an issue? Get in touch — we are happy to help.