₦airaland Forum

dollarnaira:
Waste of time to you and you only.
Funny guy.
Stay there while Valto and Mrreed are making cool cash via diy. You dey here dey talk cost of gum. This shows u know nothing about diy. Something you have not even tried out. Relax man.

it is logic, why solder and gum 500 pcs of 18650 cells when you can do same with 12 or 18 bigger cells?
Passion shouldn't lead to ignoring efficiency.

Let me ask, in your 18650 DIY packs, how do you handle cases where after ssoldering and deploying the whole pack, few cells become weak and dont hold charge enough, thus unsettling the whole pack?

You take it all apart and start doing tests or what exactly?
Please riddle me that one.

fuckboys:
you want to sell this battery? Make I come dm?

Haisic 8KWH is actually 280AH x 25.6 = 7,168W or 7.17KWH. Shouldn't buy batteries where the manufacturer deliberately mislabels the actual capacity. Who knows what other shortcuts they took.

BangaRice:
it is logic, why solder and gum 500 pcs of 18650 cells when you can do same with 12 or 18 bigger cells?
Passion shouldn't lead to ignoring efficiency.

Let me ask, in your 18650 DIY packs, how do you handle cases where after ssoldering and deploying the whole pack, few cells become weak and dont hold charge enough, thus unsettling the whole pack?

You take it all apart and start doing tests or what exactly?
Please riddle me that one.

Enjoy your day.

FEGEITOK:
I relocated and then I noticed my inverter no longer could hold a charge overnight.

After some troubleshooting

This is what we found:

Whenever the power trips off, the power from the inverter seems to be coming back to the inverter to charge the inverter causing the inverter to run constantly at 50% load and the batteries to self discharge (that is without any applied load from my end) in less than 3 hours.

Even after all appliances are switched off at the db level the 50% load remains.

Has anyone ever experienced this?

Initial thoughts was someone is tapping the electricity illegally but our investigation has eliminated this as a possible reason.

Will continue troubleshooting tomorrow

You are tapping your inverter AC input from the wrong place. You are tapping it from the point that goes to the house, rather from the point that comes to the house. So when on battery mode, the AC input is still from your inverter.

favouredbymercy:
You are tapping your inverter AC input from the wrong place. You are tapping it from the point that goes to the house, rather from the point that comes to the house. So when on battery mode, the AC input is still from your inverter.

Your explanation makes the most sense.

I have a Longi 3 phase meter,

My neighbor uses a Longi 1 phase Meter.

The Meter has L1 in and L1 out.
L2 in and L2 out.
L3 in and L2 out.
Neutral in and out

I tapped the neutral from the Neutral out.

I tapped the Live from the common Live Out.

I guess I need to change where the Live to AC in comes and revert.

Thanks.

BangaRice:
The issue i discover about we buyers is assuming what favours us. Most cells arent grade A and they hint by including something like "<=5000 cycles" in the specs. Some are even rated less than 2000 cycles. It shows you that out of the total lifecycles, someone has used some of it thus the lesser than symbol.

Some chinkos also exploit the space created by such gaps in estimated life cycles of cells to sell not so good cells.

You can do all the due diligence in the world, as long as you not in China, you don't get to see what is shipped to you till you receive it.

But like I said, yet to take a loss from buying from China. Still the best place to do business.

Good evening everyone.
Please where can I get the Deriy 12v 315Ah Lifepo4 battery.

cutefy:
Good evening everyone.
Please where can I get the Deriy 12v 315Ah Lifepo4 battery.

Deriy only have 280AH 12.8V 3.6kwh you can reach us..

Dam5reey:
Deriy only have 280AH 12.8V 3.6kwh you can reach us..

Noted

BigDickProblems:
Wow, this is interesting. I would like to hear more about this experience.

Because I always wondered why Oraimo and many other Brands uses Lythium-polymer (Li-PO) battery type that swells up in less than a year of use. So this also happens to LifePo4 if I get you right? Is it also after or almost attaining their complete cycle count?

Every lithium battery expands and retracts. That's where many builders insists on compression of cells when assembling.
Lithium is very sensitive and will catch fire and explode when punctured. But when mixed with phosphate, it reduces or hinders that fire issue during puncture depending on how the lifepo4 is produced. That's why LFP is safest lithium battery for home.

Yes, lifepo4 will expand and swell if you keep it at high charge for long. That's why it's discouraged to have LFP cells stay at 3.65v or anywhere near it. This is where BMS comes in to ensure you don't let it get there or stay there for long.
Most keep there cells at max 3.5v or even 3.45v so that LFP cells can last for decade+.
No matter what you do, after 5 years for example, if you disassemble the cells you'll see bulges or little belly in the cells. That's normal and they are still very good as long as it isn't exaggerated.

So, when bms is damaged, current won't stop entering the cells and they will swell beyond point of retraction and could explode.

Royle2014:
Planning to get one for my shop self. Omo d thing cost sha. 2kwh battery +1kwh inverter for 700k plus...

If not for the steep installation costs nd plenty materials (breakers etc), that 700k for fit tidy small proper inverter setup with a 2.5kwh Naija made lithium battery bank and a 2kwh hybrid inverter nd 400watts panel.

Do your self a favor, get bread 1.5kva hybrid, 3.6kwh battery. You will have some change and better value for money.

Meanwhile, I have the smaller version including 600w panel and installation for #570 if interested.

ask4bk:
Every lithium battery expands and retracts. That's where many builders insists on compression of cells when assembling.
Lithium is very sensitive and will catch fire and explode when punctured. But when mixed with phosphate, it reduces or hinders that fire issue during puncture depending on how the lifepo4 is produced. That's why LFP is safest lithium battery for home.

Yes, lifepo4 will expand and swell if you keep it at high charge for long. That's why it's discouraged to have LFP cells stay at 3.65v or anywhere near it. This is where BMS comes in to ensure you don't let it get there or stay there for long.
Most keep there cells at max 3.5v or even 3.45v so that LFP cells can last for decade+.
No matter what you do, after 5 years for example, if you disassemble the cells you'll see bulges or little belly in the cells. That's normal and they are still very good as long as it isn't exaggerated.

So, when bms is damaged, current won't stop entering the cells and they will swell beyond point of retraction and could explode.

Interesting. This is educative.

FEGEITOK:
I relocated and then I noticed my inverter no longer could hold a charge overnight.

After some troubleshooting

This is what we found:

Whenever the power trips off, the power from the inverter seems to be coming back to the inverter to charge the inverter causing the inverter to run constantly at 50% load and the batteries to self discharge (that is without any applied load from my end) in less than 3 hours.

Even after all appliances are switched off at the db level the 50% load remains.

Has anyone ever experienced this?

Initial thoughts was someone is tapping the electricity illegally but our investigation has eliminated this as a possible reason.

Will continue troubleshooting tomorrow

I think you should reset the inverter if it has that feature. Or just take it to default mode.

Maybe some settings are fighting each other.

fuckboys:
you want to sell this battery? Make I come dm?

Bro, I have some questions about your 12V setup.
Is it okay to please ask to come to your WhatsApp?

bkuranga:
Bro, I have some questions about your 12V setup.
Is it okay to please ask to come to your WhatsApp?

very okay chief, no issues.

Abeg who have measured the 30kwh option make person know wetin e de buy

abuzz33:
Haisic 8KWH is actually 280AH x 25.6 = 7,168W or 7.17KWH. Shouldn't buy batteries where the manufacturer deliberately mislabels the actual capacity. Who knows what other shortcuts they took.

fuckboys:
very okay chief, no issues.

I no see your contact.
And I dropped mine, bot they delete am.

Greetings Great Commumity

Please I want to ask, can the Powmr 4.2KW hybrid inverter paired with the Haisic 25.6v Battery carry a 1.5HP Submersible pump.

Can it work? What are the conditions for it to work if it will?

Thanks for the contribution.

Please I need input on this matter. Thanks

Trippledots:
I think you should reset the inverter if it has that feature. Or just take it to default mode.

Maybe some settings are fighting each other.

Additional notes on the issue:

Since turning off the distribution board (DB) didn't work, I'm trying a new approach to figure out this constant power draw.

When my inverter is running the house, I'm seeing a continuous load of about 2kW. This happens even when the AC input is plugged in but there's no grid power.

The same issue occurs when there is mains power, and it's simultaneously charging the inverter and the inverter is powering the house.

However, the load drops dramatically—from 1.6-2.0kW down to around 0.20kW—if the mains power is charging the inverter but the inverter isn't supplying power to the house.

My next step is to disconnect everything at the source, not just at the DB. I'll then connect each device or circuit back one by one while monitoring the inverter's power draw until I identify the source of the problem.

I'm pretty sure this is a wiring, circuit, or device issue, and I'll report back once I've isolated it.

One more thing:

Breaking the AC IN connection to the inverter allows it to successfully run overnight, indicating that the issue isn't with the inverter's ability to operate on battery power. Instead, the problem likely stems from the AC IN circuit itself, or the inverter's interaction with the AC grid.

This suggests a potential issue with one of the following:

AC IN power source

AC IN wiring or breaker

Inverter's AC transfer switch

Trippledots:
Sachet inverters run their fan intermittently. If you are on a budget, don't mind the absence of internal charging, ups function and MPPT then you can get one.

Okay. Thanks. Appreciate the feedback.

bassdow:
why 1.5KVa ? why not at least 2KVa especially since the price difference ain't even significant

I later settled for a 3kva. Thanks.

HeavenlyBang:
Not sure you'll see any modern 1.5kw 24v inverter.

Exactly as you said. I couldn't find any from trusted brand. I later settled for growatt.

SolomonGrundy:
Exactly as you said. I couldn't find any from trusted brand. I later settled for growatt.

Apparently, the world has moved on, or more importantly we are more power hungry than we thought.

Apparently, in the future 3.0kW will be the new baseline model