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How Many Watts Solar Do I Need To Charge A 12v 200ah Battery - Technology Market - Nairaland

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How Many Watts Solar Do I Need To Charge A 12v 200ah Battery by tetralogyfallot(m): 5:22pm On Jun 25, 2018
How many watts solar panel do I need 2 charge a 12volts, 200ah drained battery to full capacity?
Re: How Many Watts Solar Do I Need To Charge A 12v 200ah Battery by kelvin1191(m): 5:39pm On Jun 25, 2018
tetralogyfallot:
How many watts solar panel do I need 2 charge a 12volts, 200ah drained battery to full capacity?
it all depends on the rating of the panel. single 250w can do the job
Re: How Many Watts Solar Do I Need To Charge A 12v 200ah Battery by tetralogyfallot(m): 5:51pm On Jun 25, 2018
kelvin1191:

it all depends on the rating of the panel. single 250w can do the job
okay 250w panel. Thanks
Re: How Many Watts Solar Do I Need To Charge A 12v 200ah Battery by Donald3d(m): 5:58pm On Jun 25, 2018
tetralogyfallot:
How many watts solar panel do I need 2 charge a 12volts, 200ah drained battery to full capacity?

The real question should be how many hours would x watts solar panel take to charge 200ah battery

Because its current that really determines how fast the battery charges, that means even a 40 watt panel would charge your battery, just that it would take longer .

40 watt panel gives out approx 2 Amps charging current

250 watt like the bro stated above would give approx 13 amps charging current (So this should be sufficient enough)

The whole point of my episode is, practically any solar panel would charge your battery, but the size(in watt) would determine how fast it charges

I am not all knowing, so if anyone sees any mistake in my analysis, kindly correct me respectfully, we are all here to learn .

7 Likes

Re: How Many Watts Solar Do I Need To Charge A 12v 200ah Battery by pointstores(m): 6:57pm On Jun 25, 2018
u need minimum of 3 pieces 150watts panel connected in parrel

1 Like

Re: How Many Watts Solar Do I Need To Charge A 12v 200ah Battery by tetralogyfallot(m): 8:19pm On Jun 25, 2018
Donald3d:


The real question should be how many hours would x watts solar panel take to charge 200ah battery

Because its current that really determines how fast the battery charges, that means even a 40 watt panel would charge your battery, just that it would take longer .

40 watt panel gives out approx 2 Amps charging current

250 watt like the bro stated above would give approx 13 amps charging current (So this should be sufficient enough)

The whole point of my episode is, practically any solar panel would charge your battery, but the size(in watt) would determine how fast it charges

I am not all knowing, so if anyone sees any mistake in my analysis, kindly correct me respectfully, we are all here to learn .
thanks
Re: How Many Watts Solar Do I Need To Charge A 12v 200ah Battery by Dam5reey(m): 11:20pm On Jun 26, 2018
tetralogyfallot:
How many watts solar panel do I need 2 charge a 12volts, 200ah drained battery to full capacity?

It's simple, Most of the comments here don't use solar, they are just giving you mathematics..

Here we go.. A solar panel can only produce average of 3 to 4 times it's capacity..

That is 250 watts will produce 800 to 1000 watt hours..

A 12V 200AH have potential 2000watthours

It means on an average good day, 500watts will charge 1 battery from 0% that is 10.5V to 12.7V 100%

Now back to battery management, it's is recommended you only discharge to 50% that is Half, that mean you can only drain 1000watt hours from 200AH battery..

So in reality 500 watts Panel will conveniently charge 2 12V 200AH that is discharged only to 50% 12.10V there about..

1000 watts Panel to charge from 0% to 100%

See the screenshot of my harvest from a 220Watts panel. This was energy gained from 11am till 5pm,
Readings UP shows total energy gain from Solar 400watthour, currently in use below..

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Re: How Many Watts Solar Do I Need To Charge A 12v 200ah Battery by tetralogyfallot(m): 12:13am On Jun 27, 2018
Dam5reey:


It's simple, Most of the comments here don't use solar, they are just giving you mathematics..

Here we go.. A solar panel can only produce average of 3 to 4 times it's capacity..

That is 250 watts will produce 800 to 1000 watt hours..

A 12V 200AH have potential 2000watthours

It means on an average good day, 500watts will charge 1 battery from 0% that is 10.5V to 12.7V 100%

Now back to battery management, it's is recommended you only discharge to 50% that is Half, that mean you can only drain 1000watt hours from 200AH battery..

So in reality 500 watts Panel will conveniently charge 2 12V 200AH that is discharged only to 50% 12.10V there about..

1000 watts Panel to charge from 0% to 100%

See the screenshot of my harvest from a 220Watts panel. This was energy gained from 11am till 5pm,
Readings UP shows total energy gain from Solar 400watthour, currently in use below..
thanks bro
Re: How Many Watts Solar Do I Need To Charge A 12v 200ah Battery by agarawu23(m): 6:00am On Jun 27, 2018
Dam5reey:


It's simple, Most of the comments here don't use solar, they are just giving you mathematics..

Here we go.. A solar panel can only produce average of 3 to 4 times it's capacity..

That is 250 watts will produce 800 to 1000 watt hours..

A 12V 200AH have potential 2000watthours

It means on an average good day, 500watts will charge 1 battery from 0% that is 10.5V to 12.7V 100%

Now back to battery management, it's is recommended you only discharge to 50% that is Half, that mean you can only drain 1000watt hours from 200AH battery..

So in reality 500 watts Panel will conveniently charge 2 12V 200AH that is discharged only to 50% 12.10V there about..

1000 watts Panel to charge from 0% to 100%

See the screenshot of my harvest from a 220Watts panel. This was energy gained from 11am till 5pm,
Readings UP shows total energy gain from Solar 400watthour, currently in use below..
which inverter or solar controller do u use to make u see all the infos in the picture u uploaded? I need something like that for my solar system.
Re: How Many Watts Solar Do I Need To Charge A 12v 200ah Battery by agarawu23(m): 6:02am On Jun 27, 2018
tetralogyfallot:
How many watts solar panel do I need 2 charge a 12volts, 200ah drained battery to full capacity?
i have Googled this before buying my solar inverter and the best Ans I got is 400-500 watts. With 5hours of sunlight (I mean that kind of sun that will fry egg grin) it will charge the battery full from 0%
Re: How Many Watts Solar Do I Need To Charge A 12v 200ah Battery by tetralogyfallot(m): 8:14am On Jun 27, 2018
agarawu23:
i have Googled this before buying my solar inverter and the best Ans I got is 400-500 watts. With 5hours of sunlight (I mean that kind of sun that will fry egg grin) it will charge the battery full from 0%
thanks bro
Re: How Many Watts Solar Do I Need To Charge A 12v 200ah Battery by Pachesky(m): 8:27am On Jun 27, 2018
Pls more comments..This would be helpful for many of us who intend to switch to solar..phcn don show me shege..
Mod pls move this to front page
Re: How Many Watts Solar Do I Need To Charge A 12v 200ah Battery by flex21: 11:25am On Apr 01, 2019
Please, I have a 200ah 12v battery connected to a 150w solar panel but it's not charging it. No sign that the battery is charging on the charge controller and the inverter indicator. Someone said I need to get another 150w solar panel b4 it would charge. Does it mean one 150w solar panel can't charge a 12v 200ah battery? Can I connect a 250w solar panel with a 150w solar panel to charge the battery? Or connect two 150w panels. Urgent reply is needed please? Thanks
Re: How Many Watts Solar Do I Need To Charge A 12v 200ah Battery by tetralogyfallot(m): 9:23pm On Apr 01, 2019
flex21:
Please, I have a 200ah 12v battery connected to a 150w solar panel but it's not charging it. No sign that the battery is charging on the charge controller and the inverter indicator. Someone said I need to get another 150w solar panel b4 it would charge. Does it mean one 150w solar panel can't charge a 12v 200ah battery? Can I connect a 250w solar panel with a 150w solar panel to charge the battery? Or connect two 150w panels. Urgent reply is needed please? Thanks
even 20watts solar panel will charge 200ah battery except that it would be very very slow while charging. Its either the panel is bad or your charge controller is bad or even the battery. Then to your second question, yes u can connect various panel with different wattage to charge the same battery.

1 Like

Re: How Many Watts Solar Do I Need To Charge A 12v 200ah Battery by oladayo63(m): 6:07pm On May 10, 2019
tetralogyfallot:
even 20watts solar panel will charge 200ah battery except that it would be very very slow while charging. Its either the panel is bad or your charge controller is bad or even the battery. Then to your second question, yes u can connect various panel with different wattage to charge the same battery.

Please do have Sako battery charger?
Re: How Many Watts Solar Do I Need To Charge A 12v 200ah Battery by tetralogyfallot(m): 9:04pm On May 10, 2019
oladayo63:


Please do have Sako battery charger?
yes but is costly
Re: How Many Watts Solar Do I Need To Charge A 12v 200ah Battery by hiidee(m): 10:57am On Dec 01, 2019
Someone should pls help on what charge current should be set to charge four 12V 200AH inverter batteries(Lead Acid).

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