A while back I met a guy on Facebook Marketplace, a tree fell on his house and he had 30× 300W solar panels he needed gone. I rented a U-Haul and bought all of them for $30 each.
I had a friend Joe who works on forklift batteries help me get started. He told me anything below like 60% gets scrapped and the scrap price is dirt cheap for what you’re actually getting. He ended up hooking me up with two 500Ah 24V forklift batteries for free, which was huge. I rented a $100 truck, the company loaded it with forklifts, and then up in Maine my cousin has a Kubota so I got lucky unloading it.
I also grabbed some UPS batteries that are 12V, wired them in series to get 24V and then paralleled them, and then paralleled that with the two 24V forklift batteries. Total comes out to about 1500Ah @ 24V. The UPS batteries cost me $600 for 500Ah, which is crazy cheap.
I’ve got some land in Maine so I just started throwing panels out there, nothing fancy. Literally just threw everything on the ground and put as many as I could on top of a camper. This winter a bunch of them blew off so I had to go out and put them back up lol. I’m honestly lucky the camper is still there considering the wiring… and surprised I didn’t burn it down at some point.
I also found 500W panels for $10 each with cracked glass. Didn’t fix anything and they still do like 400W after 4 years.
Solar panels are dirt cheap right now because China overproduced like crazy, there’s just too many panels out there.
Setup:
- ~4–5kW+ solar
- ~1500Ah @ 24V battery bank
- One 200A charge controller
- 4000W inverter
In full daylight I could mine all day pulling like 150 amps, which is pretty wild for basically scrap parts.
First time wiring it I was pushing so much current one of the cables basically caught fire… so yeah learned about wire size real quick.
I also burned up a couple inverters early on pushing too many watts through them, but eventually found a couple 4000W inverters cheap on eBay and those have been working great.
Only thing that sucked is I didn’t have a cutoff so I had to manually unplug the miner or it would just drain the batteries.
In the end I actually stopped mining with it and just run the camper. I used to burn like 150 gallons of gas, now I use basically nothing. I run the AC, microwave, everything with no issues. It’s still half-assed, but at least I upgraded to thicker gauge wires so it’s a little less sketchy now.
The pictures below are from when I first started the setup — it’s missing a ton of panels and one of the forklift batteries.
From there I ended up starting ING Mining, and now we’re one of the larger retail disruptors of used miners lol.
Still, for broken panels, “dead” batteries, and Facebook deals… it worked way better than it should.
Mining dirt cheap with dead forklift batteries and busted solar panels
byu/KyrPt0 inBitcoin
Posted by KyrPt0
1 Comment
Nice. It’s pretty amazing what can be accomplished with very little money and effort. Just gotta do it!