Mecer 2400VA Inverter (Community Support) - Part 2

deonk said:
I do not know. I am now going to take some time off this thing....my head is spinning. This Solar First charge setting I thought was working is also not...solar sits on 6A and battery does not move from 26.6.
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Maybe its this how "does it blend power" subject. Try lowering your load to below 160W to see if PV takes over? I'm guessing, never played with one of these.
 
Hello all, after a week away from home, my inverter is behaving oddly. I have the Mecer 2400 with x2 Hubble LiPo batteries, and a battery equalizer.

Upon the power cutting for scheduled loadshedding, the whole thing shuts off. Pushing the power button does nothing. When the power comes back after the scheduled outage, it appears to charge, with its fan running to imply this, but I suspect that it somehow isn't? When the next outage started, it completely died in the same way again. LCD completely off.

I checked that all cables were connected properly and securely. I also temporarily removed the balancer, but no change. Also removed every device plugged into the inverter, no difference either.

Before, I used to be able to start the inverter up even during loadshedding with no mains present. Now the best I can get it to do is the three-second startup beep, before it shuts off. Only when Eskom mains returns does it seem to work.

I did notice that upon reconnecting the balancer (standard one from GeeWiz) its lights indicated the following: U(A/B)<10V. This is per the manual the balancer came with.

Does this confirm my suspicion that the Mecer inverter somehow isn't charging my two Hubble S-100A batteries, or is something else likely at fault? What can I do to try and troubleshoot?

Any advice is very greatly appreciated!
 
BlinkyBoomer said:
Hello all, after a week away from home, my inverter is behaving oddly. I have the Mecer 2400 with x2 Hubble LiPo batteries, and a battery equalizer.

Upon the power cutting for scheduled loadshedding, the whole thing shuts off. Pushing the power button does nothing. When the power comes back after the scheduled outage, it appears to charge, with its fan running to imply this, but I suspect that it somehow isn't? When the next outage started, it completely died in the same way again. LCD completely off.

I checked that all cables were connected properly and securely. I also temporarily removed the balancer, but no change. Also removed every device plugged into the inverter, no difference either.

Before, I used to be able to start the inverter up even during loadshedding with no mains present. Now the best I can get it to do is the three-second startup beep, before it shuts off. Only when Eskom mains returns does it seem to work.

I did notice that upon reconnecting the balancer (standard one from GeeWiz) its lights indicated the following: U(A/B)<10V. This is per the manual the balancer came with.

Does this confirm my suspicion that the Mecer inverter somehow isn't charging my two Hubble S-100A batteries, or is something else likely at fault? What can I do to try and troubleshoot?

Any advice is very greatly appreciated!
Click to expand...
Please measure the voltage of the batteries.
 
BlinkyBoomer said:
Hello all, after a week away from home, my inverter is behaving oddly. I have the Mecer 2400 with x2 Hubble LiPo batteries, and a battery equalizer.

Upon the power cutting for scheduled loadshedding, the whole thing shuts off. Pushing the power button does nothing. When the power comes back after the scheduled outage, it appears to charge, with its fan running to imply this, but I suspect that it somehow isn't? When the next outage started, it completely died in the same way again. LCD completely off.

I checked that all cables were connected properly and securely. I also temporarily removed the balancer, but no change. Also removed every device plugged into the inverter, no difference either.

Before, I used to be able to start the inverter up even during loadshedding with no mains present. Now the best I can get it to do is the three-second startup beep, before it shuts off. Only when Eskom mains returns does it seem to work.

I did notice that upon reconnecting the balancer (standard one from GeeWiz) its lights indicated the following: U(A/B)<10V. This is per the manual the balancer came with.

Does this confirm my suspicion that the Mecer inverter somehow isn't charging my two Hubble S-100A batteries, or is something else likely at fault? What can I do to try and troubleshoot?

Any advice is very greatly appreciated!
Click to expand...
Looks like the batteries are completely discharged.

You will have to wake them up with another 12V source. Read the manual on the hubbles.
 
After doing some research, I understand that the two Hubbles might need to be jumped with a very low amperage first, until they reach a certain voltage? Can you recommend a charger I could get to accomplish this?

Will such Hubble batteries have suffered damage if they've been discharged this way?

I can't account for what may have discharged my batteries like this. When away from home, I power down the whole thing, and no running devices are left connected to it. Could the Mecer 2400VA inverter have accidentally not been charging the batteries up correctly?
 
BlinkyBoomer said:
After doing some research, I understand that the two Hubbles might need to be jumped with a very low amperage first, until they reach a certain voltage? Can you recommend a charger I could get to accomplish this?

Will such Hubble batteries have suffered damage if they've been discharged this way?

I can't account for what may have discharged my batteries like this. When away from home, I power down the whole thing, and no running devices are left connected to it. Could the Mecer 2400VA inverter have accidentally not been charging the batteries up correctly?
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You are dead in the water without a multimeter.
 
wingnut771 said:
You are dead in the water without a multimeter.
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This, they're super cheap you don't need a fluke meter just get a meter any meter.

BlinkyBoomer said:
After doing some research, I understand that the two Hubbles might need to be jumped with a very low amperage first, until they reach a certain voltage? Can you recommend a charger I could get to accomplish this?

Will such Hubble batteries have suffered damage if they've been discharged this way?

I can't account for what may have discharged my batteries like this. When away from home, I power down the whole thing, and no running devices are left connected to it. Could the Mecer 2400VA inverter have accidentally not been charging the batteries up correctly?
Click to expand...
I can't speak for hubble but instead of focusing on the batteries being dead i.e. the BMS has shut off the batteries, rather focus on the inverter, the easier goal is to wake the inverter charging circuit, which will in term wake the batteries, I have a 24v LiFePO4 from Scott and when doing my tests i replicated the situation you are in right now.
I solved this by connecting another 24v battery in parallel to the Lithium while connected to the Inverter which was plugged in but in an off state due to "no battery" being found.

Connecting the parallel battery for about 2 seconds wakes the inverter switching on its charger, which in tern switches on the battery/BMS then you can leave it to charge.
 
BlinkyBoomer said:
After doing some research, I understand that the two Hubbles might need to be jumped with a very low amperage first, until they reach a certain voltage? Can you recommend a charger I could get to accomplish this?

Will such Hubble batteries have suffered damage if they've been discharged this way?

I can't account for what may have discharged my batteries like this. When away from home, I power down the whole thing, and no running devices are left connected to it. Could the Mecer 2400VA inverter have accidentally not been charging the batteries up correctly?
Click to expand...

Below is my original post waking the BMS. I do highly suggest first getting a multimeter or other way of measuring the voltage.
Does the Balancer not tell voltage of each battery ?

Zuner said:
Did a capacity test on Scotts Lithium Battery 24v100ah

Mecer Lobo 2400va Peak efficiency 85%
View attachment 1457669

Load:
49" TV, Media Laptop, Router/ONT, Gaming PC with 2 monitors and speakers, 3D printer for 3 hours.

Energy Measured: 1.874KHW
Rated Energy 2.400KWH - Efficiency loss = 2.040KWH expected (That is if inverter maintained peak efficiency, which it did not)

On battery for 9H30M
View attachment 1457671View attachment 1457673View attachment 1457675

I'm not sure which device trigger protection, I think it was BMS as the inverter did not want to start up again which is normal for this inverter and thus needed a kick start by connecting another small 24v battery in Series to the lithium for about 1-2 seconds the inverter wakes up and starts the charger unlocking the BMS.

Strange thing was the battery was measuring 22.6V though seemingly not supplying current the inverter needed to wake up. I'm used to BMS cutting voltage not current (yes i know current limiting cuts voltage lets not get into this).

View attachment 1457677

Shutdown at 22.2V
View attachment 1457679

20a Charging for the next 2 hours then loadshedding at 8pm. fan going full blast so no magic smoke risk, will turn back to 10a when loadshedding begins so I don't wake up to magic smoke later.
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Zuner said:
This, they're super cheap you don't need a fluke meter just get a meter any meter.


I can't speak for hubble but instead of focusing on the batteries being dead i.e. the BMS has shut off the batteries, rather focus on the inverter, the easier goal is to wake the inverter charging circuit, which will in term wake the batteries, I have a 24v LiFePO4 from Scott and when doing my tests i replicated the situation you are in right now.
I solved this by connecting another 24v battery in parallel to the Lithium while connected to the Inverter which was plugged in but in an off state due to "no battery" being found.

Connecting the parallel battery for about 2 seconds wakes the inverter switching on its charger, which in tern switches on the battery/BMS then you can leave it to charge.
Click to expand...
Yeah, R100 from builders there about.

We can't assume it's the batteries. He had it off and unplugged. How did they go flat?

If it is that and they need jump starting then a small alarm/gate motor battery will work, just do one at a time, like jump starting your cars flat battery with jumper cables. The important thing is not to use a big battery as you will have a lot of amps flowing then.
 
Zuner said:
Below is my original post waking the BMS. I do highly suggest first getting a multimeter or other way of measuring the voltage.
Does the Balancer not tell voltage of each battery ?
Click to expand...
The balancer is the HA01 I think which only has 2 LEDs.
 
I now stood next to my inverter during loadshedding and suddenly the fans went quiet...no sound...and then I saw it shows NO load whilst everything was still on in the house..this lasted for about 7 minutes, then load showed again and fans started up again. I then checked the Watchpower datasheets and saw that this happens regularly, and it always lasts for 7 minutes. Anybody else noticed this?
 
Hey Guys,

I have the 720W 1200va inverter. I just want to confirm what I should expect to charge my battery from say 25% SOC. At the moment it takes around 2 days for 100% SOC on my lithium battery. All calcs I see say it should take 8 to 10 hours roughly.

Do I have a bad unit?

Or is this normal in terms of charge at 10A?

Thanks
 
nickst3r said:
Hey Guys,

I have the 720W 1200va inverter. I just want to confirm what I should expect to charge my battery from say 25% SOC. At the moment it takes around 2 days for 100% SOC on my lithium battery. All calcs I see say it should take 8 to 10 hours roughly.

Do I have a bad unit?

Or is this normal in terms of charge at 10A?

Thanks
Click to expand...
First of all, how do you get to this 25% number?
Secondly, is that 2 days straight? What about loadshitting?
Thirdly, you don't mention what battery size you have but judging my your 10 hour comment it is 100Ah?
 
wingnut771 said:
First of all, how do you get to this 25% number?
Secondly, is that 2 days straight? What about loadshitting?
Thirdly, you don't mention what battery size you have but judging my your 10 hour comment it is 100Ah?
Click to expand...
Sorry - its a 100ah (1280wh) battery. Call it 2 days in between load shedding with the inverter off.
 
nickst3r said:
Noob here so all I can tell you is input voltage on the LCD. Hoping thats what you want.. it says 247 volts.
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Yes, what does it say here when it's charging:
1676891683598.png

If it says 24.7V then are you sure you have a 12V battery and a 12V inverter?

Please take pictures of your actual battery and your actual inverter model.
 
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