₦airaland Forum

HeavenlyBang:
SAKO is garbage, no one recommends it here anymore for a reason. Send that battery back and get your money back.

HeavenlyBang:
SAKO is garbage, no one recommends it here anymore for a reason. Send that battery back and get your money back.

Dam5reey1:
You for at least add small technicals small.
I was planning to make videos about importance of efficiency in our inverters.

Reason why I attached an External Shunt permanently to my Batteries..

His is using an Inverter that consume 45w and plus other loads.

Dam5reey1:
You for at least add small technicals small.
I was planning to make videos about importance of efficiency in our inverters.

Reason why I attached an External Shunt permanently to my Batteries..

His is using an Inverter that consume 45w and plus other loads.

KudozInteriors:
Please what does the external shunt do?

And are there inverters that consume less?

fuckboys:
monitor in and out energy usage of your battery pack.

KudozInteriors:
Does it in any way help in reducing energy consumption of the system?

Dam5reey1:
You for at least add small technicals small.
I was planning to make videos about importance of efficiency in our inverters.

Reason why I attached an External Shunt permanently to my Batteries..

His is using an Inverter that consume 45w and plus other loads.

HeavenlyBang:
70w fan + 45w = 115w
From 10pm to 8am = 10 hours = 1150wh


Assuming three phones charging at 30w for three hours = 270wh

Total is 1420wh

Even considering inverting losses, total DC usage shouldn't be more than 1600wh, and yet he's losing ~2500wh.

I think the discrepancy is enough to chalk it up to a bad battery.

HeavenlyBang:
70w fan + 45w = 115w
From 10pm to 8am = 10 hours = 1150wh


Assuming three phones charging at 30w for three hours = 270wh

Total is 1420wh

Even considering inverting losses, total DC usage shouldn't be more than 1600wh, and yet he's losing ~2500wh.

I think the discrepancy is enough to chalk it up to a bad battery.

KudozInteriors:
Good morning great minds
Please I'm having a serious issue.

I got premium advise here for my load to buy at least 3.5Kwh battery but then my installer advised me to just close eye and buy 5Kwh which I did. I was too busy that period and I'd made calls for prices and gave him money to get them for me…it was Sako that he brought. I’d done some things with the man on the past and he was trustworthy. I didn’t know anything about the product but I trusted him.

Now, here’s the issue. The battery was running down fast with just my standing fan of 70watts and charging of phones. It would go from full charge to less than 50% by morning even though I started the system around 10pm. I had to send it back. The factory tested it for 2 weeks and said the battery was good but that we have been charging it wrongly. They told the man (my installer) how to set the inverter to charge it well. I think they said it should charge at 15amps or so.

Few days ago, I bought Scanfrost Inverter freezer. The freezer is amazing…starts running at 145watts and goes down to about 45 to 50watts in the space of 2 to 3 hours when the compartments have maintained a certain temperature. My battery charged full yesterday as I wasn’t around and didn’t use it during the day time (I’m using 4pcs of 550watts panel for now). I ran the freezer from 7pm till 7am this morning and the battery that has 6bar has gone down to 1bar which means it’s already less than 15%. Only a standing fan of 25watts and the freezer were the loads on it. Please is this right?

Attached below are pictures of the load rating I met this morning; the battery bar signal; and my setup (not a neat one though due to some back and forth, had to change the inverter at some point thinking it might be the problem; but we plan on confirming that the system works well before looking for aesthetics)

PLEASE HELP ME🙏🏼🙏🏼🙏🏼
Thank you so much

fuckboys:
Please who sells the original of this here?

Dam5reey1:
So the house was in Black out..
His needs to pay attention to details.
This batteries in questions is not anyhow batteries, it has communication as well as Screens that shows Current consumption but he decided to use Bars when BMS shows SOC in it's screen.
He should show what the Batteries current displays and at what percentages.

KudozInteriors:
Oh my God😳😳😳

What have I gotten myself into?

KudozInteriors:
Good morning great minds
Please I'm having a serious issue.

I got premium advise here for my load to buy at least 3.5Kwh battery but then my installer advised me to just close eye and buy 5Kwh which I did. I was too busy that period and I'd made calls for prices and gave him money to get them for me…it was Sako that he brought. I’d done some things with the man on the past and he was trustworthy. I didn’t know anything about the product but I trusted him.

Now, here’s the issue. The battery was running down fast with just my standing fan of 70watts and charging of phones. It would go from full charge to less than 50% by morning even though I started the system around 10pm. I had to send it back. The factory tested it for 2 weeks and said the battery was good but that we have been charging it wrongly. They told the man (my installer) how to set the inverter to charge it well. I think they said it should charge at 15amps or so.

Few days ago, I bought Scanfrost Inverter freezer. The freezer is amazing…starts running at 145watts and goes down to about 45 to 50watts in the space of 2 to 3 hours when the compartments have maintained a certain temperature. My battery charged full yesterday as I wasn’t around and didn’t use it during the day time (I’m using 4pcs of 550watts panel for now). I ran the freezer from 7pm till 7am this morning and the battery that has 6bar has gone down to 1bar which means it’s already less than 15%. Only a standing fan of 25watts and the freezer were the loads on it. Please is this right?

Attached below are pictures of the load rating I met this morning; the battery bar signal; and my setup (not a neat one though due to some back and forth, had to change the inverter at some point thinking it might be the problem; but we plan on confirming that the system works well before looking for aesthetics)

PLEASE HELP ME🙏🏼🙏🏼🙏🏼
Thank you so much

jonescosmos:
This looks fake to me, I know the OEM to be Hager not TOMZN. Moreso, the model has failed multiple times at currents greater than 40A.
I recommend you use the MTS MCB as attached below if your load is going be more than 32A. This has an internal mechanical interlock that switches off the common load when you switch on the backup load and vice-versa.

Guyincna:
Hello house can I use Ac cable to connect solar panels down to the inverter?

Dam5reey1:
So the house was in Black out..
His needs to pay attention to details.
This batteries in questions is not anyhow batteries, it has communication as well as Screens that shows Current consumption but he decided to use Bars when BMS shows SOC in it's screen.
He should show what the Batteries current displays and at what percentages.

KudozInteriors:
Oh my God😳😳😳

What have I gotten myself into?

KudozInteriors:
Please what does the external shunt do?

And are there inverters that consume less?

Juror:
What you've said isn't sufficient to say your battery is bad, you seem to be using the inverter screen for your measurement and that would most likely give you wrong information.

Use the battery's screen, snap the SOC and remaining Amps and let's see what you have.

Dam5reey1:
Your load is obviously consuming the batteries. Post screenshots of the percentage on the batteries and voltage also the current when you are discharging and Charging.

You dont need to be looking at 1 bar 2 bars or 6 bars.

obinna37:
I don't think any thing is wrong with your battery, with the picture you posted,the inverter is showing the battery voltage 26v, meaning it still has more energy in the battery

HeavenlyBang:
My bad, the image he shared didn't load for me before I made that comment.



The picture you shared shows the battery reading on the inverter. That's effectively worthless, since it's a reading almost entirely based on the delta between battery voltage and charge voltage set on the inverter. Stop using that to judge your battery state of charge; do that with the battery itself.

Before you sleep tonight, check the power draw on your battery (you can do that on your inverter or the battery itself).

Record that figure
Record your battery SoC/capacity left before sleeping (this should be from the battery itself)
Then check the SoC/capacity when you wake up


The first figure should be power draw on battery. On this inverter, it should be listed as OUTPUTBATT

Get back to us tomorrow morning with these figures.

AndroBlaze:
The advice you were given by Dam5reey1 is the best so far. Try and get an external shunt or coulometer to independently measure what is actually leaving your battery (and coming into it for some).

This will for once and for all clear up the capacity issue and give you a stronger leg to stand on if you need to argue with Sako that their battery is not meeting expectation.

This will solve a lot of issues some people are having here as trusting some inverters and even some BMSs is not a good way to monitor the ability of a battery or solar setup.

KudozInteriors:
Please how and where can I get this external shunt or coulometer?

Thank you.

KudozInteriors:
The battery doesn’t display percentage like some other batteries unless I don’t understand what you mean by that sir.

Thank you.

Guyincna:
look at what I highlighted. Using those cables will it give u the best out put and no lose of power, like how reliable is it?

bbally:
Why is suggested the size is because his voltage is higher and current is below 25A. Whatever the loss in voltage is will not affect the cc performance like that.

If you can get original Coleman, please go for it and size it base on your voltage and current

AndroBlaze:

The attached picture is usually the cheapest and a quite reliable shunt. You can also search Jiji and Konga to get better prices by using search words like "shunt", "coulometer", "energy meter" and "coulomb".

However, note that the above can only properly measure energy going one way (either charging, or discharging). If you want one that can measure energy going both ways (at the same time) you need to use the kind that clearly states so, like the type Dam5reey1 uses in his videos. Linnov8 sell that I believe.

AndroBlaze:
It does. It will show you capacity and remaining Ah. Use the menu button to get there it will show it you. Don't be afraid to press those buttons on the battery as you can't really change any setting from using the buttons.

However, like I said before do not fully depend on anything the battery tells you. Get something independent to confirm it's capacity.