Lee, That is exactly the purpose of the small solar panels that you can buy used on Craigslist or Ebay. VW has been shipping their vehicles with a small solar panel plugged into the lighter plug, to keep the aux battery topped off during the weeks or months the car is sitting somewhere waiting to be moved to the next place.
Also the Nissan Leaf can be had with a small solar panel on the rear spoiler – again not for charging it large pack, but to keep the 12V battery topped up. Unfortunately some 2013 are still able to run down their battery, despite sitting outside in the sun all day. In that case, it helps to get a new battery and to check vampire circuits in the car such as the (no longer useful) telemetrics system. Cor. Sent from Mail for Windows 10 From: Lee Hart via EV Sent: Tuesday, August 6, 2019 8:06 PM To: Electric Vehicle Discussion List Cc: Lee Hart Subject: Re: [EVDL] Hyundai releases solar roof vehicle. Alan Arrison via EV wrote: > The usual waste of time and money. I'm sure the numbers are theoretical > best case scenario. One thing they don't talk about is how much power the car takes just from sitting. I was surprised to discover that my Prius draws about 30ma from its 12v battery continuously when parked. It's needed to power all the "always on" vampire loads, like the keyless entry, secruity system, clock, radio presets, odometer, etc. That's enough to run down a new 12v battery in 4 weeks or so -- less if the battery is old or weak. So I installed a small PV panel under the rear window. It's wired to the 12v battery through a diode and fuse. It produces about 200ma peak. That's not enough to overcharge the battery; but it is enough to keep it charged even if the car is parked for weeks while we are on vacation. Even if this is all the Hyundai PV panel does, that's still enough to be useful. -- Whether we or our politicians know it or not, Nature is party to all our deals and decisions, and she has more votes, a longer memory, and a sterner sense of justice than we do. -- Wendell Berry -- Lee Hart, 814 8th Ave N, Sartell MN 56377, www.sunrise-ev.com _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA) -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20190806/3e263fef/attachment.html> _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
