NewStats: 3,264,866 , 8,184,933 topics. Date: Thursday, 12 June 2025 at 04:00 PM 3r2u5f

U didn't state ur battery type, also d wattage of load on it

temi4fash:
Hello Sirs,

I was not in the house for some days, i noticed my inverter charged my batteries up to 28.6V when still connected to NEPA.

Immediately i put it on load it dropped to 26.5 and rapidly up to 25.9V and stabilises there and do not drop rapidly again.

What can be the problem?

solar installer needed urgently in warri..

Hello. It it possible to have a solar system that powers just my laptop and phone ..... or is there a product out there already?

cyrusmillz:
Hello. It it possible to have a solar system that powers just my laptop and phone ..... or is there a product out there already?

Go to Jumia and type in the search bar "solar generators" or if you want to go for a specific brand "Qasa Solar Generator" or "Bluetti Solar Generator" or "Solar Laptop Powerbank". You'll see a lot of options to chose from if you don't want to DIY the system

Jefferyzz:
U didn't state ur battery type, also d wattage of load on it

The battery is Icell AGM Battery

The load is just lighting bulbs, the energy saver ones.

Sometimes even before any load, once the NEPA goes off, we have the drop in voltage even before any load.

But the load is the energy saver in the house

hello, everyone. pls pardon my ignorance about this solar thing. I am a freelancer who works from home but the subsidy removal is really dealing with me. I have a budget of 100-120k to invest in getting an alternative source of energy. I just need something that can power 2 laptops, 4 power banks and charge phones for at least 6 hours a day. I would appreciate any recommendations. Thank you!

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Good day, I greet all the chiefs in the house please how good is this product "PowMr 2000W Pure Sine Wave Inverter Portable Car Charger" the seller was asking for 100k.

Is this a good value for my money or is there a better company or model inviter you guys can recommend, am having that feeling that transformer based is always better

Please elder in the house I need your recommendation please

temi4fash:
Hello Sirs,

I was not in the house for some days, i noticed my inverter charged my batteries up to 28.6V when still connected to NEPA.

Immediately i put it on load it dropped to 26.5 and rapidly up to 25.9V and stabilises there and do not drop rapidly again.

What can be the problem?

This is the reason people are advised to go for LiFePO4, when I read message like this, I already knew the battery chemistry.

cyrusmillz:
Hello. It it possible to have a solar system that powers just my laptop and phone ..... or is there a product out there already?

Yeah there definitely is. I would strongly advise you opt for Mobile Power Solution (MPS). You won't regret it. Here you go....

https://nairaland.unblockandhide.com/fapemz

ericbertrand:
hello, everyone. pls pardon my ignorance about this solar thing. I am a freelancer who works from home but the subsidy removal is really dealing with me. I have a budget of 100-120k to invest in getting an alternative source of energy. I just need something that can power 2 laptops, 4 power banks and charge phones for at least 6 hours a day. I would appreciate any recommendations. Thank you!

MPS is your sure bet- a LiFePO4 battery chemistry

Here you go...

https://nairaland.unblockandhide.com/fapemz

TechGeek777:


This is the reason people are advised to go for LiFePO4, when I read message like this, I already knew the battery chemistry.

So what do i do?

What is the battery chemistry?

Do i get an external charger for it?

temi4fash:


So what do i do?

What is the battery chemistry?

Do i get an external charger for it?

Manage the battery till it dies, but prepare to go for LiFePO4.

How many Amp hour is your battery?

TechGeek777:


Manage the battery till it dies, but prepare to go for LiFePO4.

How many Amp hour is your battery?

200AH

is there anyway to resuscitate it?

temi4fash:


200AH

is there anyway to resuscitate it?

Kindly state your solar array

temi4fash:
Hello Sirs,

I was not in the house for some days, i noticed my inverter charged my batteries up to 28.6V when still connected to NEPA.

Immediately i put it on load it dropped to 26.5 and rapidly up to 25.9V and stabilises there and do not drop rapidly again.

What can be the problem?

Nothing is wrong with your batteries it's absolutely okay.

TechGeek777:


Kindly state your solar array

I dont use PV yet...

I intend to add that later, we use NEPA/Gen for the charging right now

dacool1:

Nothing is wrong with your batteries it's absolutely okay.

Oh.. How do we make it stay full charged after remove the Power source?

temi4fash:


Oh.. How do we make it stay full charged after remove the Power source?

Connect a smart charge that will maintain a float voltage. It's not as if it would drain completely if you don't keep it connected. You should only worry if you won't use the battery daily.

temi4fash:


I dont use PV yet...

I intend to add that later, we use NEPA/Gen for the charging right now

Has the inverter gone off due to low battery?

TechGeek777:


Has the inverter gone off due to low battery?

Nope..

I monitor to ensure it does not go below 24V.

The inverter shows the Battery Voltage.

dacool1:


Connect a smart charge that will maintain a float voltage. It's not as if it would drain completely if you don't keep it connected. You should only worry if you won't use the battery daily.

Smart Charger? An external charger right?

Large quantity of brand new grade A 100ah lifepo4 lithium cells with intact QR code and actual capacity test done on all is available
we can also couple in a customised foreign metal box, 125A circuit breaker, Bluetooth bms as
12v 100ah
12v 200ah
12v 300ah
12v 400ah
24v 100ah
24v 200ah
24v 300ah
24v 400ah
48v 100ah
48v 200ah
whatsapp 08020574628
we can waybill to any location in Nigeria

Valto:
Large quantity of brand new grade A 100ah lifepo4 lithium cells with intact QR code and actual capacity test done on all is available
we can also couple in a customised foreign metal box, 125A circuit breaker, Bluetooth bms as
12v 100ah
12v 200ah
12v 300ah
12v 400ah
24v 100ah
24v 200ah
24v 300ah
24v 400ah
48v 100ah
48v 200ah
whatsapp 08020574628
we can waybill to any location in Nigeria

Nice one, always put your price on your battery packs, so that those silent readers wey no dey ask questions go know say these things no too expensive as them think.

Eh be like say some dey fear to ask questions.

I will definitely buy from you when my money is complete.

@Temi4fash, nothing is wrong with your battery.

For any 24V system, an AGM battery irrespective of the amp hour, at 25.9V your battery (if it's on a load and not connected to any charging source) is doing well above 98% *this is me trying to be modest*.
It is actually at 100%, if it is at 25.9V, and if it is not being charged at that point in time, so relax.

Nonetheless, work towards buying and hooking up your batteries with quality solar s (I do recommend you oversize your PV array around 20-30% extra, so long its voltage is adequately below the maximum Voc of your charger) to keep your battery bank often in good shape, for a longer life.

So, do not fret, just enjoy your set up.
You are on a right path.

TechGeek777:


Nice one, always put your price on your battery packs, so that those silent readers wey no dey ask questions go know say these things no too expensive as them think.

Eh be like say some dey fear to ask questions.

I will definitely buy from you when my money is complete.

i couple battery with different types of bms and accessories. so price can not be fixed. also prices of accessories and battery cells used are subject to change at any time.
btw, very serious buyers normally me on WhatsApp, wechat and telegram to discuss and place their orders, which i assemble and dispatch to them steadily. i have successfully sold items to over 100 people from nairaland, without the prices fixed here!

Following in the footsteps of my brother who did some serious overling.

I am increasing the capacity of my s to 2500 watts and installing a second MPPT solar charge controller for the additional s I would be purchasing. This is the idea or the thinking:

As a general rule of thumb, you will need solar s with a capacity of at least 600 watts to fully charge two 12v 200Ah batteries connected in series in 5 hours of sunlight. This is assuming that you are using efficient solar s with a charging rate of 15%.

If you want to charge the batteries faster, you will need more solar s. For example, if you want to charge the batteries in 3 hours, you will need solar s with a capacity of at least 1200 watts.

Two 12v 200ah batteries connected in series have a total capacity of 4800 watt-hours (Wh). If you have 2500 watts of solar s, the batteries will charge in about 2 hours.

Here is the calculation:

Total capacity of batteries = 4800 Wh
Power of solar s = 2500 watts
Charging time = Total capacity / Power of solar s = 4800 Wh / 2500 watts = 1.92 hours = 2 hours

However, it is important to note that this is just a theoretical calculation. The actual charging time may be longer or shorter depending on the amount of sunlight you receive, the efficiency of your solar s, and the charging rate you use.

For example, if you receive 5 hours of sunlight per day with an efficiency of 15%, the batteries will charge in about 2 hours. However, if you only receive 3 hours of sunlight per day, the batteries will charge in about 4 hours.

This is a minor my existing system of just solar s and a new charge controller, no new batteries still using my AGM batteries. (545watts Jinko x 3)

The major planned upgrade is to increase my PV size to 10 kilowatts and my batteries to lithium of at least 10 kilowatts as well.

Once I complete this project. I will now convert AEDC into a backup plan.

In another post, I will share how the rise in my electricity bills led me to go solar.

Ofcourse
25.2v+ is still full bar with load on it. It might b lower than that depending on the wattage of load on d battery. The moment u put off all load u will get ur 26v or 25.9v which is still full bar.

temi4fash:


The battery is Icell AGM Battery

The load is just lighting bulbs, the energy saver ones.

Sometimes even before any load, once the NEPA goes off, we have the drop in voltage even before any load.

But the load is the energy saver in the house

mctfopt:



Go to Jumia and type in the search bar "solar generators" or if you want to go for a specific brand "Qasa Solar Generator" or "Bluetti Solar Generator" or "Solar Laptop Powerbank". You'll see a lot of options to chose from if you don't want to DIY the system

Thanks bro

FEGEITOK:

Here is the calculation:

Total capacity of batteries = 4800 Wh
Power of solar s = 2500 watts
Charging time = Total capacity / Power of solar s = 4800 Wh / 2500 watts = 1.92 hours = 2 hours

If batteries are Lead acid with %100 dod, you will have a battery vendor on speed dial and your solar charging is based on a perfect STC which can be misleading

durodee:
Good morning house, just want some advice here on Smart TVs.
1) Is there a way I can make my regular TV smart? I.e is there a box or stick readily available that I can attach?
2) Anybody with experience with Polystar 65inch smart TV. Is it worth the 300k price? Just to watch films and occasional football matches.

Many thanks for your input!

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