tziz:

Bro, u still dnt get me. What inverter do u use and do u use gen to charge it? If yes, what's the capacity of ur gen?
I dnt hav any issue with the charging current of my Inverter. Plus it doesn't take dt much time to charge it up to full with Nepa wen it's fully discharged(which I hardly do), trust me, I keep serious tabs. My Inverter takes 14hrs+- 25mins to charge my batteries to full wen it's fully depleted. This is not even what I'm talking about, lemme giv u a layman's explanation of wat I'm saying:

I charge fully depleted battery with Nepa for 5hrs = 7hrs usage time till it fully depletes.

Then, I charge fully depleted battery with gen for 5hrs = 3hrs usage time till it fully depletes.

Plus iv never seen a well known, good 12v inverter with upto 50 - 70 Amps charging current. You can show me one, I'd luv to knw. PS: good brands like Sukam, Microtek, Luminous etc
Not all those Samuel L. Jackson inverters o, dat don't have a charging program, as long as der's power, dey'll continue charging ur batteries till dey become pregnant. Lol

tziz:

I know Felicity Solar, they installed the solar system we use in my office, a 5kVa system with 10pcs 200Ah batteries, all the batteries died within 10months.
Well, I'll consider adding a stabilizer, thanks for that. Looking at Solar too. If I giv u a typical daily load, can u giv an estimate of how many panels will be sufficient? For charging only, then charging and simultaneously using it for load

kiekie1:


What a bad experience ! There are so many reasons why battery die prematurely but its so sad to hear batteries turning scrap in less than a month , it shows that a proper load audit wasn't done , substandard material or undersized battery -solar system ! Cheer's

makavele:


Exactly what I told him
and they blamed the “poor inverter” that did
nothing wrong

kiekie1:


What a bad experience ! There are so many reasons why battery die prematurely but its so sad to hear batteries turning scrap in less than a month , it shows that a proper load audit wasn't done , substandard material or undersized battery -solar system ! Cheer's

tziz:

Oh, I just checked the Home Theater again, it's even 150W not 115W. @bolded, really? Iv seen many. Mine is the type with tall standing speakers. It's 1000Watts P.M.P.O. I'll check and confirm the others after work today and let u knw.. Tnx

makavele:



Mine is a 2,000 watts system, 4 surround speakers, 1 twitter and 1 bass engine ..

Yet I have never seen it go above 45 W, even at maximum volume

makavele:
I'll give you breakdown in the morning

tziz:

Bro, iv please do the calculation for these loads:

These are wat i want to be running during the day alongside charging the batteries with the solar:
42" LED Tv: 110W
GoTv decoder: 15W i guess.
Ceiling Fan: 70W

Thanks

tziz:

Maybe u are using a Watt meter, mine is wat is written on the rear dat I know.

makavele:
Load:

42" LED Tv: 110W
GoTv decoder: 15W i guess.
Ceiling Fan: 70W


Total: 195 W + 10% for losses due to conversion and inefficiences
: 195 + 19.5 = 214.5 or 215W round figure.

Energy consumption: 215 Watts per hours = 215 Wh

You said to be run during the day; you didn't mention hwo many exact hours.

Let me guess 7 AM - 6 PM = 11 hours

Gross energy consumption = 215 W x 11 hours = 2365 Wh or 2.4kWh

Battery required:

At 50% DOD (economy level):

2365 Wh x 2 = 4730 Wh

Adding inefficiency factor: 4730 Wh / 0.8 = 5912.5 Wh

Using 12V batteries: 5912.5 Wh / 12V = 492.7 Ah

Let's round it up to 500Ah; which means you will need either:

1 unit of 12V 500Ah battery, or
2 units of 12V 250Ah batteries (more common), or
5 units of 12V 100Ah batteries

The choice is yours.

Now for Solar Panels:

Typical sun hours for Lagos is about 5 hours; pray no bad weather.

So we need that battery bank to be recharged completely in about 5 hours.

Calculations for only 50% DOD

5912.5 Wh / 5 hours = 1182.5 Watts of solar panels

You will either need

1 unit of 1182.5 Watts solar panels, or
5 unit of 250 Watts solar panels, or
8 units of 150 Watts solar panels, e.t.c.

This amount of panels are only good to recharge your batteries, if you want to run loads simultaneouly,
double the panels.

If you discharge batteries below 50%, all my calculations will be off.I did not account for lower discharge.

I did not account for more loads; only exactly what you listed.

Cheers.

tziz:

We dont blame the inverter, we blame the whole company and thier half-baked installers! These Chinese guys from Felicity Solar came in from China and did the installations in all the Company's branches, even in my boss's house. I tink the one in his house is acting funny, then the one in the headoffice failed, couldnt hold charge, u leave it over the weekend with good sunlight only to com back on monday and its already beeping on 30mins usage. The headoffice is completely off-grid so we rely on the solar system and gen. The batteries wer all thrown away and new batteries bought thats working perfectly now. I later heard word that the batteries had stayed stale and unused in containers before they wer shipped from china though. Even the solar street lights dey installed has stopped working long ime ago. only one flickers somtimes

makavele:



Mine is a 2,000 watts system, 4 surround speakers, 1 twitter and 1 bass engine ..

Yet I have never seen it go above 45 W, even at maximum volume

makavele:
Load:

42" LED Tv: 110W
GoTv decoder: 15W i guess.
Ceiling Fan: 70W


Total: 195 W + 10% for losses due to conversion and inefficiences
: 195 + 19.5 = 214.5 or 215W round figure.

Energy consumption: 215 Watts per hours = 215 Wh

You said to be run during the day; you didn't mention hwo many exact hours.

Let me guess 7 AM - 6 PM = 11 hours

Gross energy consumption = 215 W x 11 hours = 2365 Wh or 2.4kWh

Battery required:

At 50% DOD (economy level):

2365 Wh x 2 = 4730 Wh

Adding inefficiency factor: 4730 Wh / 0.8 = 5912.5 Wh

Using 12V batteries: 5912.5 Wh / 12V = 492.7 Ah

Let's round it up to 500Ah; which means you will need either:

1 unit of 12V 500Ah battery, or
2 units of 12V 250Ah batteries (more common), or
5 units of 12V 100Ah batteries

The choice is yours.

Now for Solar Panels:

Typical sun hours for Lagos is about 5 hours; pray no bad weather.

So we need that battery bank to be recharged completely in about 5 hours.

Calculations for only 50% DOD

5912.5 Wh / 5 hours = 1182.5 Watts of solar panels

You will either need

1 unit of 1182.5 Watts solar panels, or
5 unit of 250 Watts solar panels, or
8 units of 150 Watts solar panels, e.t.c.

This amount of panels are only good to recharge your batteries, if you want to run loads simultaneouly,
double the panels.

If you discharge batteries below 50%, all my calculations will be off.I did not account for lower discharge.

I did not account for more loads; only exactly what you listed.

Cheers.

tziz:

I know Felicity Solar, they installed the solar system we use in my office, a 5kVa system with 10pcs 200Ah batteries, all the batteries died within 10months.
Well, I'll consider adding a stabilizer, thanks for that. Looking at Solar too. If I giv u a typical daily load, can u giv an estimate of how many panels will be sufficient? For charging only, then charging and simultaneously using it for load

Stanley08:
Hello guys. I got this Luminous Zelio 1700 1.5 KvA inverter (LCD screen) and Two 200 Ah Batteries. (Photos below)

I will be using 2 fans, 2 - 5 energy saving bulbs (all not always on), 43" LG LED 4K TV, DStv Explora.

Those are the things that it will carry most times. To be honest, all i need on sometimes is my laptop and fan. Lol.

Anyways, How long do you think it will last for me on a full charge?

duwdu:


In my layman's knowledge/opinion, you should not draw down deep cycle (particularly Lead-Acid) batteries by more than 50% of their total energy capacity before recharging them, to properly preserve battery life. In order words, aim to draw a maximum of 200Ah (200 amps FOR one hour) total from the two batteries combined.

Now, for 12v batteries, 200Ah will give a total energy or power of 200 x 12 Watt-Hours, or 2,400 Watts FOR one hour. (Watts = Amps x Volts.)

All you then need to figure out is the Watts rating of each of your components, so you can know or estimate for how long 2,400 Watts will run them in any combination.

For example, if your TV is rated 50 Watts, then you should aim to run it alone for 200 ÷ 50 = 4 hours, at full blast.

Watts required by separate equipment are simply additive.

(Please note: In order to not make things appear complicated, I left out the real world bit that, the inverter itself will "eat" out of your available Watt-Hours. This is because no inverter is 100% efficient in the process of converting DC power from the batteries to the AC power the inverter supplies to equipment.

AFAIK, inverters can be anything from 75-98% efficient.)

Good luck.

........
P34c3
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...

Stanley08:
Hello guys. I got this Luminous Zelio 1700 1.5 KvA inverter (LCD screen) and Two 200 Ah Batteries. (Photos below)

I will be using 2 fans, 2 - 5 energy saving bulbs (all not always on), 43" LG LED 4K TV, DStv Explora.

Those are the things that it will carry most times. To be honest, all i need on sometimes is my laptop and fan. Lol.

Anyways, How long do you think it will last for me on a full charge?

whizcode:
Good day house please I need. A good inverter
Installer. In Abuja and environs preferably. Or if you can work. By proxy good and fine

whizcode:
Good day house please I need. A good inverter
Installer. In Abuja and environs preferably. Or if you can work. By proxy good and fine

duwdu:


In my layman's knowledge/opinion, you should not draw down deep cycle (particularly Lead-Acid) batteries by more than 50% of their total energy capacity before recharging them, to properly preserve battery life. In order words, aim to draw a maximum of 200Ah (200 amps FOR one hour) total from the two batteries combined.

Now, for 12v batteries, 200Ah will give a total energy or power of 200 x 12 Watt-Hours, or 2,400 Watts FOR one hour. (Watts = Amps x Volts.)

All you then need to figure out is the Watts rating of each of your components, so you can know or estimate for how long 2,400 Watts will run them in any combination.

For example, if your TV is rated 50 Watts, then you should aim to run it alone for 200 ÷ 50 = 4 hours, at full blast.

Watts required by separate equipment are simply additive.

(Please note: In order to not make things appear complicated, I left out the real world bit that, the inverter itself will "eat" out of your available Watt-Hours. This is because no inverter is 100% efficient in the process of converting DC power from the batteries to the AC power the inverter supplies to equipment.

AFAIK, inverters can be anything from 75-98% efficient.)

Good luck.

........
P34c3
.....
...

earthrealm:


errrm thought it shud be the total wattage in the battery wch you calculated to be 2400w divided by the tv wattage of 50w, this will give you over 50hrs runtime, but in real woprld..you cant take out all the stored energy in the battery +inefficiencies..so its best to work with 60 to 80% = about 1400w , so about 30hrs runtime or so

duwdu:


, . . For example, if your TV is rated 50 Watts, then you should aim to run it alone for 200 ÷ 50 = 4 hours, at full blast.

.....
...

duwdu:


The question was for two batteries total, (if you'll check the requester's original post) for a total capacity of 4800 Watts, hence my own more than one references to Both batteries, and 2400 Watts at 50% draw down from both batteries together. No?

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P34c3
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...