Submitted by FUCKPUTIN2022LOL t3_y4av1u in DIY
I'm dumb as a bag of bricks, and electricity was the bane of my existence in high school physics. I frankly have no fuckin clue how it works. With that in mind.. I'm looking to build a battery. Specifically a battery I can charge using solar DC power. I'm currently debating between 18650 and 32650 batteries. I want to solder them together ( I may have used wrong word I'm clueless) using nickel strip roll, and then have them output 12V through a Car auxiliary power port. (I can elaborate on why specifically that output format). How many cells would I need to to reach 200ah and 12v? My math got me 268 (18650) and I'm so bad I can't even retrace how I got it.. but if I'm right this would give me 2400WH which means I could run a 300W appliance for 8 hours. Did I get that all right? I realize that I could just buy something that fits those specs, but I really want to get my hands dirty. I've always liked building things like computers and other nerdy shit, but I'm really getting into tiny homes and alternative power as a broke 24 year old. (Building my own tiny home would be cool but 1 step at a time lol)
(3min after edit Not knowing anything about electricity If my target isn't realistic at 200ah, would 100ah still allow me to draw 300w? Just for 4 instead of 8 hours correct?))
Edit* much later 8ish hours* I realize that this idea isn't realistic or even potentially safe. I also realize saying this would probably get me downvotes, but the cost differential is insane here. For the price of a 2000+ wh jackery power unit, I could build a 28000wh system at cheaper using 18650 cells. (Refence on current LiOn and LiPo pricing https://www.18650batterystore.com/collections/18650-batteries?sort=price-ascending)
6000+ being the price point
hijinks t1_isd4txs wrote
If you are looking to add a second battery like overlanders do, if you do it wrong you risk destroying your computer which can be very pricey.