frivan

Lithium batteries have cells balanced by the BMS. If charge settings are according to the battery requirement, leave equalization.

No. Your solar can only do 110A. Lower charging rates is good for your batteries. Do you have a generator?

I started with the thermometer on the element side but it only shows when the element is on: Going to try the output side of the gryser now.

Unfortunately from an asset price point of view, tech prices come down. I would start with the current price and linearly depreciate over the life of the equipment...10 years.

My solar system has an IRR around 23%. I added a second battery which has an IRR of about 18%. However, winter in Cape Town is not the period when the equipment performs. Any IRR above inflation is good but the higher the IRR, the more pain for Eskom. A solar panel can theoretically give 200% IRR. This father's day, spoil someone you love with the gift that keeps giving: a PV panel.

If you held at wrench to my head, I would set the inverter not communicating with the batteries to only charge to about 90% of SOC based on voltage.

Then don't parallel the batteries. Manage batteries and solar panels according to the connected loads.

Typically inverters that are paralleled manage operation and charging with communication between the inverters. The battery comms goes to the master inverter, the slave inverters get instructions from the master.

Ok, leave the Solis but only run the generator at night... elegant.

If you add a changeover switch (and disconnect the Solis), why isn't it a long term solution?

You could install a Sonoff temperature controller and set it both on time and temperature to cover most hot water generation.

The ZigBee switching works fine but turns out I have a normal bridge and I need a Pro bridge to show the "geyser temperature" remotely. The temperature probe on the end plate is not as effective as with an internal pocket. The wife wasn't happy when her second bath for the day ran cold.

A cheap system could set their 0% where others call it 20%. But then you would see poor energy per weight figures. Sungrow is a reputable player in the grid scale environment, I would buy their equipment.

Seems like Eskom will join us: Eskom breaks ground on R1.2-billion Lethabo solar plant https://techcentral.co.za/eskom-breaks-ground-on-r1-2-billion-lethabo-solar-plant/281908/ However, this could kill people at home if Eskom doesn't obtain permission from consumers!

Once you invest in solar, you want to maximise use of the solar system under normal conditions: use it for the geyser, cooking, etc. I like induction plates because they are very responsive. When the grid is out, you want to minimise draining batteries and then gas heating comes in handy. I use a Cadac cylinder if needed. I doubt if gas heating beats electrical heating on a price basis.