Mecer 2400VA Inverter (Community Support)

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cjinahat said:
Guess I need to upgrade my inverter then because my load and DoD of my LFPs are essentially being dictated by how quick I can charge it at this stage. Or how slow I can charge I should say.
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Curious... Battery size? Load size? What DoD do you usually run to?
 
TheLuckmeister said:
@AlphaJohn - What do you use to monitor it?
Is there a way to shut down the system before it reaches a certain battery voltage?
Right now we just guessing because we dont want to reach the BMS cutoff.
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I have Sonoff's to see in & out via Home Assistant:

1666177736481.png

As for when it hit close to empty no don't use anything for automation as base load 120W can easily handle 4 hours without a fuss. We normally home for high use and for that we gauge via a V meter eg:

1666177555361.png

That said, I have yet to see my Sako battery drop below 26.4V even with 4 hour sessions. Battery just take longer to charge back up. My battery does have a % graph but that is inside a box so not of much use.
 
AlphaJohn said:
When gaming yes.

Base doing nothing is 120W during LS and 70W when we out of LS.

120W is to ensure fan kicks in.
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Makes sense then why they charge up so quickly then... My wife and I both work from home so the batteries are constantly being loaded. Also have cables running to power our TVs.
 
Dylan_G said:
Curious... Battery size? Load size? What DoD do you usually run to?
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200 Ah in total. Have a spreadsheet to calculate load - Its a bit of a guessing game but I calculate between 150 and 250 Watts during work hours. It can't be more than 360W cause I've never had the 50% load bar appear on the Mecer. I reckon I am discharging to maybe 75% DoD if its full when LS kicks in. If thats the case, it will take 5 hours to charge back up at 10A, but it takes about double that time because I am still using it while it chargers most of the time. Unless I'm sleeping.
 
AlphaJohn said:
I have Sonoff's to see in & out via Home Assistant:



As for when it hit close to empty no don't use anything for automation as base load 120W can easily handle 4 hours without a fuss. We normally home for high use and for that we gauge via a V meter eg:



That said, I have yet to see my Sako battery drop below 26.4V even with 4 hour sessions. Battery just take longer to charge back up. My battery does have a % graph but that is inside a box so not of much use.
Click to expand...
Thanks! I reckon i'll get one of these with the colour indicator so the wife can see... red means stop.Screenshot 2022-10-19 at 13.41.50.png
 
TheLuckmeister said:
Thanks! I reckon i'll get one of these with the colour indicator so the wife can see... red means stop.View attachment 1404193
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Just reminded myself I need to make a new box.... for current set-up.

Back in the 12V days I use to have a nice box for the 2 + temp meter.

1666180223276.png

Battery now has the temp built in...
 
Here's a nice shot of the inverter switching straight to float charging after LS, then just about getting through a full charge cycle before LS strikes again. The later took about 12 hours :/
 

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Loadshedding be gone once more!

Finally installed again at new place, now I'm waiting my battery from China to add to the current batteries

5d3b98d2e44c7f3bbe46656b42e78c63.jpg
 
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