All Questions
Tagged with 12v solar-cell
24
questions
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What size capacitor and or components do I need to run 12V starter motor with solar panels as power and relays for switches
I'm trying to use solar panels to operate a DC 12-volt small starter motor at slow speed to rotate my solar panels towards the Sun automatically.
The size of solar panels that it take to power the 12 ...
1
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2
answers
80
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Can I charge my two large 12 V bus batteries that add up to 24 V together with a a 12 V solar panel?
Just wanting some way to charge my bus batteries while parked for a long amount of time besides a battery charger. But am having trouble figuring out what kind of solar panel to get.
My bus batteries ...
- 11
4
votes
3
answers
334
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Battery-powered 3-5 V MCU, but 12 V solenoids. How to power?
I'm building a battery-powered safe cabinet hobby project. It uses the 32L152CDISCOVERY board. I plan to charge it with a solar panel. I should operate at least 6 months without maintenance.
The MCU ...
- 41
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2
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362
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Maximize heat from a 12 V, 100 W solar panel and 26 AWG nichrome wire
I am heating a nonconducting material. The power source is connected directly to 12 guage copper wire. One 30 inch strand of 26 AWG nichrome 80 wire runs between the copper wire posts.
Since sunlight ...
- 3
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1
answer
172
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Get 12 V stable output from solar connected 12 V battery
I have a 12 V monitor on my sailboat that only accepts a 5% voltage difference, so it needs between 11.4 V and 12.6 V input. Max draw is 1.5 amp according to spec. Here is a link to the user manual: ...
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62
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12V boat lead acid battery suddenly failed
Battery on boat and powered by solar panels started acting really weird suddenly exactly a week ago. App shows voltage went from minimum 12.3V to min 6V in a day. On board voltmeter showing 11.9-12.2 ...
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1
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3k
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Dual 12 V battery setup - wiring, grounding and busbars
I am installing a second 12 V battery into my van to run eletronic devices. The second battery is a bank of two LiFePO4 12 V, 120 Ah cells connected in parallel.
My three questions are surrounding the ...
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4
votes
1
answer
885
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12 V wiring regulations (UK)?
What regulations (if any) do I need to follow if wiring a 12 V system (in the UK)?
I was planning to wire up a garden shed / summer house to the 220 V mains. I'm confident I could wire it safely and ...
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-3
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3
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419
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Solar panel voltage drop [closed]
I'm having a problem with my solar panels.
I'm running a gecko 57l fridge out of a 100ah deep cycle battery with an 160w portable solar panels.
The system works fine and it outputs 13.7v to charge the ...
0
votes
1
answer
172
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Two power sources into appliance (12Vdc)
I am creating powering board for LED strips inside the cacti glass house. It consume 12V DC around 2 amps. I would like to power them up from battery (charged by solar, lead-acid battery 20Ah), but if ...
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How to measure available amps? Do i need more load?
My new 200W 18v 11a(max) solar panel reads about 24v 4a 50% efficiency at midday on my MTTP Rich solar controller. I presume this is not great.
I was wondering... I have a 48v to 12v stepdown ...
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1
answer
375
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12 V 3.8 A water pump to 12 V 625CCA battery
Wanting to use car battery to power pump. Pump says it's 12 V 3.8 A, uses a 8 A fuse. Trying to sort out possible solar input needed to run pump but the numbers don't make sense. What size solar panel ...
0
votes
1
answer
88
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Solar power charging problems
Is it possible to power a 12v power board with a lithium battery, while keeping it charged via a solar panel. Or would I need to have two batteries and somehow automatically change them over when the ...
-2
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2
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1k
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Preventing a voltage drop using solar panel and fan
After failing to find an answer online I hope someone here would know how to solve n issue I have. I use a 12v, ~10w solar panel to activate a couple dc fans.
The problem is that when activated, the ...
0
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1
answer
719
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DIY Two Routers on 18650 [closed]
I wanted to build the following project to have a constant backup source when power outage occurs. I only know very basic electronics, but can solder simple things, willing to learn new things.
...
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