I’ve been sharing each of my LiFePO4 DIY battery builds on Twitter, and inevitably people want to know what parts they need. They’re too many to list in a tweet, so I thought I’d keep a running page here to refer people to. These things have been acquired over many months, and are not all inclusive. The reason I keep making them is to try out new things. Typical 6.5Ah to 7Ah 32700 build: LiitoKala 32700 LiFePO4 cells: ~$3.50/ea, ~$14.00 per 12v 4S1P battery. 100A 4S LiFePO4 BMS: $7.10 per batt 32650 battery holders: $1 for 4 cells Wiring (12ga, 16ga, 22ga in bulk, multiple batts): ~$50, ¢ /ea batt… Read More
Continue ReadingFabricating Gear
As many on Twitter have seen (and are probably already tired of seeing), I got myself a budget 3D Printer. Several of my coworkers would come to work with their “latest print” and it would range from utilitarian to really cool movie prop reproductions. In my mind, this hobby was prohibitively expensive. Last I heard about 3D printers, the entry-level ones ranged in the $1500+ range. And all I was seeing from those early adopters (circa 2013) was plastic bow ties and other such useless figurines; not enough of a motivator to dish out that kind of cash. I carried this mindset even to just this month, where one coworker… Read More
Continue ReadingDIY Portable 12v 15Ah Power Box
It’s been quite a journey since I first received the 3.2v Headway 40152S cells from China in March. Slowly but surely I have been learning more about DIY battery building, from balance management systems, to electric capacity and current calculations, all the way to how to fit things into a case with extensive wiring. There are plenty of YouTube mentors out there building batteries. Now I’m on a craze about Lithium power storage and solar energy, with the hopes of one day building my own home multi-Kwh power wall. In the meantime, I don’t think I’ll ever look at consumer batteries the same way ever again. I will always think,… Read More
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