Overpaneling - Information & Discussion
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- čas přidán 19. 05. 2023
- This video will explain the concept of overpaneling your power station (using more solar panels [total watts] than the max input limit).
Most power stations and solar generators have a solar charge controller (MPPT) that will automatically limit the number of watts or amps going into the battery if you "overpanel" and hook up more solar panel watts than what the power station can input.
As long as the voltage going into the power station is in the correct range (Look at the VOC, open circuit voltage of the solar panels. Do NOT look at the VMP or max power voltage).
The VMP is only useful to calculate how many watts you will get once charging has begun. (VMP is always lower than VOC). If the VOC is too high, charging might not start!
Use VMP X amps to calculate the actual input watts. Some power stations have a low amp limit, and it might not be possible to get the maximum input watts!
If you can overpanel your power station (using the correct voltage by using the solar panels with the appropriate specs, using parallel or series connections where necessary, it is generally a good idea to not exceed the input rating by a large amount (when getting max solar, such as noon on a sunny day).
It's generally advisable to limit overpaneling to slightly above the input rating. Don't go too crazy, unless you have terrible weather and the ability to disconnect excess panels during good weather. (Yes you could leave them attached and rely on the power stations charge controller to limit or 'clip' the power coming in, but as we talk about in the video, that might not be a good idea.)
Lastly, as mentioned in the video, do overpaneling AT YOUR OWN RISK. Every power station, every charge controller is different. Check the input specs (voltage range, max input watts, max input amps), check to make sure it has over-voltage protection & over-current protection and use the appropriate solar panels. DO NOT input a higher voltage.
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Thank you for doing this greatly appreciated.
Thanks for the suggestion!
Thanks great info as usual.
Great info.
Also if you alternate the panels you use each time the the panels will last longer because each panel is being used half as much.
how does it work for the Anker 767. it has 2 values: XT60 Input 11-32V⎓ 10A; 32V-60V⎓ 20A (1000W Max). So if i buy 3x 20v 6 amp. is this math correct. Paralel = 20v 18 amp anker limits to 10A 200 Watt, Series 60v 6 amp 360 Watt ?
The Anker 767 is tricky to use with solar, but it can be done. If you are looking at using ~400w of solar it's pretty easy. Getting near the max 1000w input is a challenge!
You definitely do not want to go all parallel with 20v panels, since it will limit it to 10A. And you don't want to get real close to that 60v cutoff with 3 panels in series either.
What kind of panels are you considering - rigid glass panels or portable?
If you buy the panels you mentioned, you would want to buy 4 of them. Put them in 2S 2P configuration (two panels in series, and the other two panels in series. Then connect both 'sets' in parallel. That will give you 40v 12A (480 watts).
You might want to check out Will Prowse's DIY Solar Forum, there are quite a few threads on there about using solar panels with the 767. diysolarforum.com/threads/anker-767-non-portable-panel-suggestions.54236/
@@SoGenFan Because i don't have a lot of weight left on my caravan so i am looking at the EcoFlow 100W Flexible Solar Panel. I'm not sure if i want 2,3 of 4 mounted on the roof.
Then I would suggest going with either 2 or 4 panels.
Could I overpanel a 200 watt 12-24v 10 amp solar generator with a 220 watt solar panel at 21.8v ?
Yes that would be perfect.
Hello. I have a question how much time would it take for me to fully charge a 12V 20000mAh power bank with a 12V wall plug which supports 1.5A using usb c pd cable.
A very long time. I'm not sure if you are trying to charge with usb PD input or 12v input, but either way at 1.5A, you are looking at 10-20 hours!
@@SoGenFan actually I bought a voltmeter and checked what voltage the powerbank charges at it’s actually 9V 2A. So the power bank is a 12V 20000mAh one that supports power delivery usb c charger.
So it charges at 18 watts then. 20000mah at 12v is 240wh. My calculator says that's 13.3 hours to charge!
@@SoGenFan ok thanks
If you are using it all the time then you have got value for money.
That's true! 👍
Ya know