Batteries for solar power

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Walter
Walter's picture
Batteries for solar power

I had expected that the best batteries would be 12 volt deep cycle. The only build I found in the wiki references a 6 volt deep cycle. Maybe I read it wrong? I'd prefer to use solar power for my scales but battery cost will be a factor.

Paul
Paul's picture
12v versus 6v batteries

If you are talking about this page,
http://hivetool.org/w/index.php?title=Solar_Design
that was a design attempt that was not implemented. I currently use 12 volt. Some folks use a BIG battery. I have had pretty good luck with a 18 AH 12 Volt SLA with a 40 watt panel with the charger turned down to 1.5 amp to simulate a 25 watt panel. BUT I am running an A model Pi (with Wi-Fi).

The 18 AH SLA came from EBay for $35 including shipping BUT two of them have failed after 1 year. I have just replaced the last one with a lawn mower battery from Walmart for $19.99. It is not SLA and I will have to monitor the water level. This is running on GA003 (Athens) and is over 2 years old so it doesn't have the hive interface board with the capability of monitoring battery voltage. I plan to rebuild it and start logging battery voltage Real Soon Now.

Walter
Walter's picture
That's the one.

That's the article I was looking at. I'll probably be using an RPi2 with wifi and USB camera. I'm leaning more and more towards just installing ac power to my hive stands though. The initial install would be a pain, probably a 150 ft run, but additional installations on other hives would be much easier. My guess is that with solar I'd have to install a panel for each scale? Even if a single panel could provide enough power for multiple scales, voltage drop on a 12 volt circuit will be a problem even over short distances. Don't know if anyone has tried this or not?

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