primefaith1:


Are the 4 units communicating?

I had used the communication cables that came with the batteries to connect between them. But no communication between batteries and inverter. ( I think to he inverter doesn't have the battery protocol preset on the inverter)

The system runs with 3 units SRNE inverters (which I trust to be "decent" -connected in parallel.
I use Orange Pi with Solar Assistant for data logging daily since the system was installed.
This logs daily energy harvested from solar and consumed by the loads, and also the SOC of the batteries at every time.

The system doesn't shutdown by 5pm, the battery energy or SOC just drops from 200% to within 59% to 48 %.

(The batteries must have been fully charged till floating - end of charge current pull from the battery is about 0A to 1.8A on average.

With a load of about 2000w connected to the system, the battery will dip to 48% immediately the sun goes down.

earthrealm:


Is the setup hooked to a decent hybrid inverter?.
Or do you have a means of logging daily energy harvested from solar panels and energy consumed by load.

You say the system shuts down by 5pm and you installed the setup, so am assuming you are a bit knowledgeable.

1. Are the 4 batt banks connected with same cable size and lengths to a busbar..wherein the inverter picks up the energy from?

2. When the system shuts down by 5pm...have you checked the individual SoC or voltage of each battery pack?

I'll do that right away sir.

mank1234:


No need to panic.

What is the battery voltage at this 100%? This will tell if the battery is really 100%

At what battery percentage does it shutdown? This will tell if capacity is used up.

Can we see the daily summary of your solar assistant page? This will tell what entered the battery and what came out.

Edit: send PM I'll send you my email address so you can give me the link to your solar assistant instance and add me as a viewer of your solar assistant. Viewer access prevents accidental modification of your instance.

My brother...this is the situation some dealers and marketers put is through...

PV is 24units of 550w longi solar panels

isangjohnson:
I thought it was just 9.6kwh but when I realized it was 40kwh, I was surprised.
Over 7m for battery bought this year and not enjoying the ROI is very painful.
I pray nothing happens to them now. It's too early.
Please, let us know your pv type and if possible check the harvest from your inverter and the position of the pv.
I'll advise you shut down the entire loads in the house, charge the battery to full and allow it to power the same 2000w or 3000w loads while you monitor the duration.
Make sure you check the battery settings again before you start the process.
If bluethooth bms is attached, monitor the individual cells in the process of charging and discharging.
Fake capacities everywhere. God will see us through.
All the best.

If this is the case, I will have to request for a refund or replacement with the right specs.

Valto:
so a supposedly 4pcs 10kwh (40kwh) battery, that can't carry 2000w load for 10 hrs. . something is wrong somewhere. a 13.2kw PV might not be optimal but, should manage to charge them full in a day, assuming there is no serious daytime loads
As for that brand and the felly guys, the stated capacity is always fake , but atleast u should get close to 7.5kwh, which means a 30kwh bank..

The battery is 4 units of 9.6kwh battery. Effective capacity should be about 38kwh.

isangjohnson:


2. You may not have any issue with your batteries. I guess 9.6kwh is about 195Ah 48v.
If I'm right, then the 2000w loads on the battery can only sustain you for about 5 hours when the battery is fully charged to 55.2v (3.45v each cell).
If the idle power consumption of the 18kw inverter wasn't factored into the 2000w, then expect about 4 hours run time from the fully charged battery.
I MAY BE WRONG.

Everything has been double checked and working fine.

bassdow:

Once had an instance where a solar panel's cable (that black cable that comes directly from the panel's board) got weak and very brittle due to weather activities, but you would never know because it was the wiire inside that became brittle, not the external covering.

Charge controller go talk say all is alright and you would be wasting time on other things when actual fault was from one of the solar panels.

The batteries gets fully charged to 100%

I installed the setup and I "think" the batteries are overrated and the dealers are not honest about it. I also think this particular batch of batteries may have a manufacturing /assembling defect.

bassdow:

Does the battery ever get 100% charged ?
Could you by 4pm today, confirm if battery is 100% charged ? if NOT 100% charged, maybe because it's in use, then tomorroow, disconnect all load, and charge and take note of it's capacity by latest 4pm.

We need know firstly, if those batteries ever gets charged completely daily.

When things happens this way, it could be the charging system, or the batteries but unless you carefully investidgate, you can't tell for sure.

Who installed the setUp ? What has the person got to say ?

The batteries are obviously overrated. The actual capacity is less that stated. And the batteries are connected in 15s not 16s.

The inverter is a hybrid and the self consumption will not be more than 300w.

dacool1:



I might be wrong, but I don't think anything is wrong with your batteries.

Most of these battery packs are over rated capacity wise. Also, your batteries won't discharge 100%, cable loses etc.

Plus your inverter is a large one, its self consumption will be great especially if it's transformer based. Get a meter to measure the total amps drawn from the battery banks to be sure.

Thanks for your response sir,

The 5units are lithium. They were to go into the same system but one of it had a defect, the cells inside shifted on their mounting and was shorted to the casing of the batteries.(the dealer acknowledged it was a manufacturing defect for this type of their batteries)
The batteries are rated 9.6kwh on the nameplate -the dealer says it is 10kwh- it is mated to a 18kw inverter and 13.2kw of solar with remote monitoring.

The batteries were bought February this year. And we're integrated in installation by July this year.


All other aspects of the system are working pretty good, just the battery.

isangjohnson:

I assumed the 5units of the battery is lithium.

How long have you used the 4units?

I also assumed the 1unit left was attached to another system.
Is that one behaving the same way?
What is the battery capacity?
Giving more information on the system will help to trace the cause.

Thanks for your response sir.

I appreciate.

I currently have very serious issues with the batteries I bought from YOHAKO and I want to be sure the issues are not peculiar to me as the dealer wants to make it seem. I bought 5units of those batteries. I used 4units for a setup, and they cannot support 2000w of load for 10hrs.

Once the sun goes down by about 5pm, the battery drops immediately.

I want to have more feedback so I will be sure this is not peculiar to my case only.

mctfopt:


If it's anything like their solar charge controller, I'll recommend you try another make. Well done.

Hello house,

I greet everybody...

Please has anyone used this particular YOHAKO lithium batteries before (9.8kwh/48V)??
What are your experience with it?
Does it meet up to the rated capacity?

Please I need a very honest review from installers and end users in the house including engineers and technicians.

Marketers should stay off.

If you can afford to let 10,100 naira slide, then fine.
But If you really want to get the money back, you may have to spend over 17,000 naira to retrieve the money.

It would be safe to let it slide for your sanity and peace of mind...next time, be more careful.

How is the performance so far? Can you share contacts to purchase this??

samir101ng:


You can also try out the SRNE 100am Solar Charge Controller - Last price i know of Nov 2022 it was going for around N195,000

Nice job..., can you send me your contact??

Or alternatively reach me on O 8 I 3 8 I 6 8 nine 3 6.

Thanks.

ewizard1:
Available!!!

E

owolabi5:
NEW REGISTRATION

How much do you charge for new drivers license registration?
how long before the permanent card is collected??
How can you get it done for someone in south south?

Response needed ASAP

I'd like to know how that stuff works

1.6m cash at hand after inspection.... Has the car been registered before?

1.8 today after inspection

Oga, post the price of your car here...

Oga, post price of your car here...

Kindly post engine pics..

Thanks

@aberyomi09, can you handle only trucking and shipping to Lagos port via RORO??

What would be the procedure/cost??

Also, can one pay in USD??

urchltd:
you have to send someone to us to pick it.

Where is your office located?

120k, can you send to uyo??
Do you do pay on delivery??

Olaoke16:

Any info

Someone close got a regret mail with regards the position. I guess this is probably because he has a B.Eng and still went ahead to apply for a HND position.

My advice to you is let her go....its hard, but it is what it is.
The more you beg, the more you make her stronger. You can't force love.

zeestone99:

i have some premium magnum, xantrex and the likes for sale.

call/watapp 08117398294.

Hello, do you by any chance have replacement control board for the magnum (MS4124)??

Bulletproof:
1. Application
2. Screening Test
3. Interview: Stage 1
4. Interview: Final
5. Medicals
6. Verification
7. Offer

Has anyone reached the 5th stage even?

Please, is there anyone for the Graduate Engineer role that has reached the 5th stage??

Also, any Graduate Engineer that have gotten regret mail, if yes, what region did you write your test??

Pls has anyone used Gimporters to ship cars from North America to Nigeria??

Can anyone vouch for them??

Honest feedback will be appreciated

Poor girl....

But why will someone think of having sex with a 2year old...why??

I just hope the mum's useless cousin died in pain and misery.