I chose a 10kWh unit after researching lithium ion battery south africa suppliers and comparing a few local installers. My main goal was simple: use less grid electricity during the expensive evening period instead of sending all my solar power back during the day.

The installation itself was easier than I expected. The technician mounted the battery in the garage beside the inverter, added the monitoring app, and showed me how to set a minimum reserve. I keep that reserve at 25%, so there is still some backup power if the grid fails overnight. The whole setup took most of a day, including testing the changeover.

The real difference appears between 5pm and 9pm. Before installing the solar battery, we used the stove, lights, television, and pool pump while buying electricity at the worst time. Now the battery usually covers those loads. On a normal weekday, my evening grid usage has dropped by roughly 6 to 8 kWh. It has made a noticeable difference to my monthly bill, especially when the weather is good and the solar panels fully recharge the battery before lunch.

I did have one minor scare during the first month. The battery stopped discharging even though the app showed plenty of charge. After checking the inverter, I found that a firmware update had reset the operating schedule to “solar priority.” A quick call to the installer sorted it out, and I changed the schedule back to battery discharge during peak hours. Since then, it has worked quietly in the background.

I like that I do not have to think about it every day. I check the battery monitor occasionally, mostly to see how much solar energy we used ourselves. For my household, the biggest benefit is not total energy independence; it is avoiding expensive evening electricity and having dependable backup power when load-shedding arrives.