Questions tagged [solar]

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Connecting 12v and 24v

I have two batteries 12v each and 2 inverters one is 24v inverter and the other 12v is there a way I can connect both inverters
Saam's user avatar
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2 votes
1 answer

What's the proper cable to connect this power station to a solar panel?

My uncle gave me his old 1000w portable power station. I already have a Bluetti SP120 portable solar panel that has mc4 connectors. I'd like to use this to the power station. I tried googling it to no ...
Christian Burgos's user avatar
2 votes
1 answer

Short Life of a Battery in a Solar Cell Garden Light

I have the small garden lights with the LED lamp powered by a AA Ni-MH battery that is recharged by a solar panel on the top of the light fixture. These lights loose power and go dark within a couple ...
Harry Bridge's user avatar
2 votes
0 answers

Resources on reflective cooling

Preparing for the next heatwave with something more sustainable than air conditioning, I'm looking into the idea of installing cooling reflectors as promoted by the site (basically, ...
javert's user avatar
  • 113
1 vote
3 answers

Smaller 800W Off-Grid Solar Panel System Arrangement

I'm planning to setup a smaller 800W off-grid solar panel system for my weekend cottage in Western Europe. I already bought the necessary parts, cables, and accessories, here's my design sketch for ...
Rick's user avatar
  • 111
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1 answer

Can I use this "hydro" inverter with solar panels SMA hyroboy HB 1124 Im assuming the inverter does not know where the DC current is coming from as long as it is below the maximum current, or am I missing something ...
wesleyPI's user avatar
1 vote
2 answers

Should I expand or duplicate my sailboat solar array?

I have a sailboat that currently has 2 100 W panels, in parallel, connected to Newpowa 30 A MPPT controller, connected to 580 Ah of 12 V lead acid batteries. Basically runs the fridge. Works well up ...
Will Nirvana's user avatar
2 votes
2 answers

How to use solar power with grid backup without net metering

So here is my situation. I am using a lot of electricity out of a couple specific outlets, 24/7. I want to install some solar panels, an inverter, and have these outlets (or possibly the whole house ...
Knr's user avatar
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1 vote
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How much polysilcon is required to make 1GW of solar modules? [closed]

Could anyone give me a good anwser here, even an approximation?
grant's user avatar
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2 votes
1 answer

DIY portable solar panel mount

So I just bought one of the 28W Big Blue portable solar panels on Amazon and got myself a cheap camera tripod from a local garage sale, all for an upcoming camping trip. I want to use the tripod to ...
Jason O's user avatar
  • 121
1 vote
1 answer

Difference in Solar wattage between 24V and 48V system

[Cross-posted on Victron's community ] Background: I'm on a boat with a 48V system and a 24V ...
Tyler A.'s user avatar
  • 121
3 votes
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How does the afterheating function work for a solar hot water controller?

I have Resol DeltaSol BX controller for my solar hot water which I would like to configure best for my situation but the wording is a bit puzzling for me to understand. It was installed about 9 years ...
Graham Chiu's user avatar