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I have some 250w santan panels, 36v nominal. I wanted to give one to a friend who is very remote and has zero access to any panel whatsoever. His charge controller is only for 12v, (Chinese pwm, no brand). has Anyone tried opening the back panel and gotten different voltages out of it?

https://www.dal.ca/news/2023/01/16/dalhousie-battery-discovery-self-discharge.html

I was asked to post a pic, finally dug enough junk out to get to the battery. I built it nearly a year and a half ago and haven’t seen it since, it’s been working flawlessly the resistor is wired from position 1 to output, battery is position 2 to output. turning from off to 1 allows a 10/sec...

So I have a stack of santan old panels. Marked at 250 watt. Running though an Electrodacus to a 24v lithium battery pack. Normally I see 30 or 40 amps, sometimes mid 40s on charge. In testing when I got the panels I could get a reliable 200 watts out of them On a hot day. I have 6 panels...

I added a WEG brand 1/4 hp motor to my grain mill, which goes from 1750 rpm through two belt gear reducing pullys to 60 rpm For the mill. tag says 5.78 to 6.78 Amps at 110-127 volts ac. hooked it up though my kill-a-watt for a load check to make sure it wasn’t overeloading grinding flour...

https://www.span.io/?gclid=EAIaIQobChMI1o_A1-vL9QIV-uwoBR0rSAvTEAEYASAAEgL49vD_BwE

https://electricvehicleweb.in/byd-blade-shaped-battery-breakthrough-battery-safety/

So My next home is in the mountains, likely 7000ft. My EVE 230AH batteries that i have just nicely bought, top balanced, capacity checked, racked into a lovely oak compression cart with wheels and neoprene in between every battery, are rated for a minimum of 86kpa. thats about 4500 ' above sea...

Bought this some months ago, https://www.amazon.com/gp/product/B0852JZQZR/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 Expect for blowing out the diode across the outputs when I hooked it to the lawnmower battery backward when charging it (which I just clipped off till I get a new one) it...

Doing the wiring and trying to shoe horn too much into too small of a space, it seems that the battery ground is only there to operate the dssr iteself and does not need to be the same 10ga wiring. Perhaps the minimum the spring cage is rated for is accep? can anyone comment on this?

https://flyheight.com/videos/t47vb5?hr=1 battery explodes while charging. Anyone guess the type?