Author Topic: Solar panel for northern cold climates  (Read 611 times)

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Offline wxmanmhd

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Solar panel for northern cold climates
« on: December 26, 2018, 09:05:15 PM »
I live in northern Minnesota and because of the low sun and cold weather my batteries from my fars fan do not get charged so it runs only from around 10 am to 4:30 pm.  1)What are other northern climate stations doing to keep the batteries charged?  2) Is there a power supply that you can buy to run the fan using AC power instead of solar panel?  I have a Vantage Pro 2 with radiation shield/fan.

Online ValentineWeather

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Re: Solar panel for northern cold climates
« Reply #1 on: December 26, 2018, 10:18:02 PM »
I hope you mean charges from 10 am to 4:30 pm. That should be enough sunshine as long as you are running 2 healthy batteries. I've gone a couple days with little sun and fan is still chugging along.
Randy

Offline wxmanmhd

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Re: Solar panel for northern cold climates
« Reply #2 on: December 26, 2018, 10:26:25 PM »
I should of maybe changed the batteries this fall. It was purchased last March.  Another problem I have is a tree blocks out some the sun also.  I was hoping to find out a way to convert it to AC with a transformer if someone has done that.

Offline CW2274

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Re: Solar panel for northern cold climates
« Reply #3 on: December 26, 2018, 11:17:14 PM »
Is there a power supply that you can buy to run the fan using AC power instead of solar panel?  I have a Vantage Pro 2 with radiation shield/fan.
I applaud you for wanting to aspirate your ISS in your climate, especially this time of year. A few here use 80x20 case fans that need a mere modification to fit like it literally belongs. If you're able, which I guess you are, it's for more reason than just one, certainly one of the best mod for your VP2.
« Last Edit: December 27, 2018, 01:34:39 AM by CW2274 »

Offline wxmanmhd

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Re: Solar panel for northern cold climates
« Reply #4 on: December 26, 2018, 11:57:41 PM »
Thanks..Will not be doing much now and next month since tomorrow a blizzard heading our way. Received 3.3" of snow so far today with another 3-5" expected tomorrow with 45 mph winds, and then expecting -15 by Friday morning. If you want to follow my falling temperatures go to fmweather.com. :-)

Online ValentineWeather

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Re: Solar panel for northern cold climates
« Reply #5 on: December 27, 2018, 06:04:08 AM »
I would replace both batteries, not all are made for cold climates. I've had luck with these made in France.
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Randy

Offline wxmanmhd

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Re: Solar panel for northern cold climates
« Reply #6 on: December 27, 2018, 08:30:13 AM »
I see the battery that Davis has is 5000mAh and this one is 2300mAh.  Is it ok to go down in mAh, less power?

Offline CW2274

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Re: Solar panel for northern cold climates
« Reply #7 on: December 27, 2018, 01:49:07 PM »
I see the battery that Davis has is 5000mAh and this one is 2300mAh.  Is it ok to go down in mAh, less power?
With your climate/latitude, who knows if you can fully charge 2300 let alone 5000. The 2300 shown above is what my VP2 came with as OE.

Online ValentineWeather

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Re: Solar panel for northern cold climates
« Reply #8 on: December 27, 2018, 01:49:43 PM »
I see the battery that Davis has is 5000mAh and this one is 2300mAh.  Is it ok to go down in mAh, less power?
I know Davis has changed batteries probably linked with California regulations and batteries jumped to higher mAh, but for years they used 2300mAh which was rated for cold climates. 
I've used these down to almost -37 below.
Randy

Offline wxmanmhd

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Re: Solar panel for northern cold climates
« Reply #9 on: December 27, 2018, 03:06:12 PM »
Thank you both for the help on this. Since itís snowing now with vis 1/4 mile and temp of 16/WC -5  have nothing else to do but order the batteries.  :-)

Offline CW2274

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Re: Solar panel for northern cold climates
« Reply #10 on: December 27, 2018, 04:43:50 PM »
have nothing else to do but order the batteries.  :-)
Does this mean you're poo-pooing the a/c route, or just waiting for wx that's a little more "hospitable"? Going a/c for myself was unequivocally the best mod on my VP2, especially since my ISS is a PIA to access, and so easy to do too.

Offline wxmanmhd

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Re: Solar panel for northern cold climates
« Reply #11 on: December 27, 2018, 05:48:39 PM »
CW 2274. No like to change but wondering what rpm and where did you get the fan and power transformer.  Will they work at -20 F . Have not looked around for the fans to see what is out there.

Offline CW2274

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Re: Solar panel for northern cold climates
« Reply #12 on: December 27, 2018, 06:03:14 PM »
CW 2274. No like to change but wondering what rpm and where did you get the fan and power transformer.  Will they work at -20 F . Have not looked around for the fans to see what is out there.
ValentineWX (Randy) will be the one to chime in, he has a climate similar to yours and uses something that'll take it.

Online ValentineWeather

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Re: Solar panel for northern cold climates
« Reply #13 on: December 27, 2018, 06:58:10 PM »
These are rated for -40. Make sure any AC voltage outside is on GFCI circuit.
« Last Edit: December 28, 2018, 07:33:50 AM by ValentineWeather »
Randy

Offline wxmanmhd

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Re: Solar panel for northern cold climates
« Reply #14 on: December 27, 2018, 11:02:44 PM »
Is there lot of modification that needs to be done..suppose cut off the corners since a square peg does not fit into a round hole as we were taught when we were 4 yrs old.  LOL found it on Digit Key which we have around 100 miles from us so could take a little day drive and get it.
« Last Edit: December 27, 2018, 11:04:59 PM by wxmanmhd »

Offline CW2274

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Re: Solar panel for northern cold climates
« Reply #15 on: December 28, 2018, 12:02:59 AM »
Most likely just trimming only two corners (~1/8 ") on the bottom of the case should do fine. The four untouched corners on top make the case sit perfectly on top of the sensor chamber cylinder. Just make sure the air flow is from bottom to top.