Yeah, we are inclined towards Lithium From: AF <af-boun...@af.afmug.com> Date: Saturday, November 7, 2020 at 11:03 PM To: af@af.afmug.com <af@af.afmug.com> Subject: Re: [AFMUG] Solar calculator? But you want to only take a lead battery to 1/2 that to avoid decreasing the longevity of them, so double the battery size and, if the batteries are going to be outside in the winter you will lose performace so double it again.
Lithium, I have learned that yes you can discharge them fully but you only want to charge them to 80% to get maximum life. So you only need to go 120% of your battery calculation for lithium... On 11/7/20 1:40 PM, ch...@wbmfg.com<mailto:ch...@wbmfg.com> wrote: 30 watts * 24 *14 = approx 10 kWh. So you need a 10 kWh battery. 10 kWh/48 = 210 Ah 48 volt battery. Now, I have lotsa experience at my latitude and weather. I will take a stab at your situation. If you can easily get a generator to the site it makes a huge difference. I would say you need a minimum of 300 watts of panel which is not much. You can get one single panel of that size. Depending on the type of charge controller you use, you will probably want 2 or 3 panels to get the voltage up in the 60-100 volt range. So take a look at the MMPV of the panels you choose and add them up in series. Take a look at the max input voltage of your charge controller. Try to get the series voltage of the panels close to that max input voltage if you can. I promise it will work if you do 600 watts of panel, that would be at my latitude, middle of winter with snow and storms. 20X the load is my rule of thumb here for off grid. 20X the load and 2 weeks of battery autonomy saves you from expensive helicopter rides in the middle of winter. So that is why I am recommending 10X for you. I think Bill once said he can get by with 10X down where he lives. From: Gino A. Villarini Sent: Saturday, November 7, 2020 12:13 PM To: AnimalFarm Microwave Users Group Subject: [AFMUG] Solar calculator? Anyone with a good online calculator? Or can you assits with: What size of panel and batteries would I need for a 48v 30W setup to run 24/7 for at least 14 days without power? Gino Villarini Founder/President @gvillarini t: 787.273.4143 Ext. 204 [Image removed by sender. aeronet-logo]<https://protect-us.mimecast.com/s/hnMxC0RmkksmzWvHwYrqr/> [Image removed by sender. inc500]<https://www.inc.com/profile/aeronet> [Image removed by sender. fb-logo]<https://protect-us.mimecast.com/s/3THwCjRkmmsR0JEI526w1/> [Image removed by sender. insta-logo]<https://www.instagram.com/aeronetpr/?hl=en> [Image removed by sender. in-logo]<https://www.linkedin.com/company/aeronet-broadband-corp> [Image removed by sender. tw-logo]<https://twitter.com/AeroNetPR?ref_src=twsrc%5Egoogle%7Ctwcamp%5Eserp%7Ctwgr%5Eauthor> [Image removed by sender. yt-logo]<https://www.youtube.com/channel/UCr2Q9WBrAYVm3Fn970Jd6VA> www.aeronetpr.com<https://protect-us.mimecast.com/s/hnMxC0RmkksmzWvHwYrqr> | Metro Office Park #18 Suite 304 Guaynabo, PR 00968 ________________________________ -- AF mailing list AF@af.afmug.com<mailto:AF@af.afmug.com> http://af.afmug.com/mailman/listinfo/af_af.afmug.com<http://af.afmug.com/mailman/listinfo/af_af.afmug.com>
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