The Battery Thread (Solar / Inverter)

[AchmatK]

You would if you dropped your usage for those periods, you don't need heaters or underfloor heating

I still need the geyser. Under floor heating is only in the bathroom and less than 2m² and uses about 300w

Temp this morning in the geyser was 41°. Switched it on to get it to 45° but quickly went back now to switch it off again as the battery dropped to 15%. Also ran the coffee machine and kettle for the morning breakfast. Not to mention my tenants who I did not inform that my battery might not make and the municipality disconnected the electricity. They have a small 35l under counter geyser with a 1.5kw element.

 

[RonSwanson]

I still need the geyser. Under floor heating is only in the bathroom and less than 2m² and uses about 300w

Temp this morning in the geyser was 41°. Switched it on to get it to 45° but quickly went back now to switch it off again as the battery dropped to 15%. Also ran the coffee machine and kettle for the morning breakfast. Not to mention my tenants who I did not inform that my battery might not make and the municipality disconnected the electricity. They have a small 35l under counter geyser with a 1.5kw element. View attachment 1199830

No worries, the sun is busy kissing those panels, my tiny 6K array is already producing 1200W, yours probably 2000W, so they will be 100% in no time.

 

[Lupus]

I still need the geyser. Under floor heating is only in the bathroom and less than 2m² and uses about 300w

Temp this morning in the geyser was 41°. Switched it on to get it to 45° but quickly went back now to switch it off again as the battery dropped to 15%. Also ran the coffee machine and kettle for the morning breakfast. Not to mention my tenants who I did not inform that my battery might not make and the municipality disconnected the electricity. They have a small 35l under counter geyser with a 1.5kw element. View attachment 1199830

I'm sure there are ways you can kick back on , that sweatshop can take a break

 

[Neuk_]

It actually is.

I think it's the shorter nights that also makes a huge difference. I don't think I'll make a full night in the middle of winter even if the battery starts off at 100% by sunset.

You'll be surprised at what you can achieve when you are forced to We had a break in our CoJ supply earlier this year that meant we had only battery and PV for 76 hours. By managing load I managed to get a full night out of our LA batteries with them only running vitals until there was enough PV. I wouldn't recommend it though, it wasn't a great experience and only fueled my want to replace the LA batteries with LFP.

 

[semaphore]

Need that 20%

 

[Mzezman]

Need that 20%

View attachment 1199996

20%? Im not following?

How large is your battery bank again?

 

[semaphore]

20%? Im not following?

How large is your battery bank again?

I need 20% more draw to fully utilize my array but my inverter obviously can’t.

11kwh.

 

[Mzezman]

I need 20% more draw to fully utilize my array but my inverter obviously can’t.

11kwh.

aaaah ok - makes sense now

still learning all this stuff

 

[AchmatK]

Need that 20%

View attachment 1199996

Are you using your batteries at all during the night.

Mine is only charged up to 70% now after using it the whole night?

 

[semaphore]

Are you using your batteries at all during the night.

Mine is only charged up to 70% now after using it the whole night?

I switched to batteries last night at around 22:00, by the time the sun came up they were down to 56% and fully charged by 8:15

 

[AchmatK]

My batteries ended up at 14% this morning but fully charged by 12:00.

We have overcast conditions on the forecast so not sure how it will cope if CoCT does not reconnect me by tomorrow.

 

[semaphore]

My batteries ended up at 14% this morning but fully charged by 12:00.

We have overcast conditions on the forecast so not sure how it will cope if CoCT does not reconnect me by tomorrow. View attachment 1200306

Nice curve.

 

[AchmatK]

Nice curve.
View attachment 1200318

Even better curves when the grid is available.

 

[semaphore]

Do you actually produce 65kWh a day?

 

[AchmatK]

Do you actually produce 65kWh a day?

No.

My daily usage graph for November.

Edit

Yes. It produces 65kWh but I don't consume all of it.

 

[semaphore]

No.

My daily usage graph for November. View attachment 1200330

Edit

Yes. It produces 65kWh but I don't consume all of it.

Ah okay, I turned my geyser on now just to reheat and was pulling close to 10kw and array tripped - they replacing the breaker tomorrow, so damn frustrating though.

 

[semaphore]

@AchmatK @RonSwanson I seem to be having main breaker trips at the DB board, yesterday I had to reset it but they were very spaced apart. Now one happened again, however when I went to reset the breaker it did not click as in a reset, go to the inverter and it clicked and the power returned. Not really sure what's happening, no alarms or anything. Is there anywhere else I can look on the inverter to perhaps get a deeper diagnosis?

 

[AchmatK]

@AchmatK @RonSwanson I seem to be having main breaker trips at the DB board, yesterday I had to reset it but they were very spaced apart. Now one happened again, however when I went to reset the breaker it did not click as in a reset, go to the inverter and it clicked and the power returned. Not really sure what's happening, no alarms or anything. Is there anywhere else I can look on the inverter to perhaps get a deeper diagnosis?

Check the error log on the inverter.

The inverter can only supply loads of 50A or 11kw.

 

[semaphore]

Check the error log on the inverter.

The inverter can only supply loads of 50A or 11kw.

Can that be seen on solarman?

 

[AchmatK]

Can that be seen on solarman?

Yes.

Check under alerts.