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Doomsday Lab

@doomsdaylab
204 Followers   12 Following
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★Spark · Joined the community

Creator content republished with authorization. Level derived from total likes (prototype).

Projects (6)Guides & Params (1)Files (0)

Pinned

Building a car jump starter from supercapacitors + lithium cells — the cells store energy, the supercapacitors deliver the big current; 21700 4000mAh cells in 2P4S, 2.7V 360F supercapacitors, two together should push past 100A instantaneous, CCA estimated 500+, should start a 2.4L car; final assembly and test next08:43
Building a car jump starter from supercapacitors + lithium cells — the cells store energy, the supercapacitors deliver the big current; 21700 4000mAh cells in 2P4S, 2.7V 360F supercapacitors, two together should push past 100A instantaneous, CCA estimated 500+, should start a 2.4L car; final assembly and test next
Doomsday Lab31475137
Found a new trick for the AWithZ spot welder, haha: spot-welding light bulbs01:41
Found a new trick for the AWithZ spot welder, haha: spot-welding light bulbs
Doomsday Lab2877156
Boston 5300 Li-ion 24V 8P6S pack picked up at a scrapyard, repaired successfully — but no BMS; ordered one online and will test capacity when it arrives03:17
Boston 5300 Li-ion 24V 8P6S pack picked up at a scrapyard, repaired successfully — but no BMS; ordered one online and will test capacity when it arrives
Doomsday Lab2825574

Recent

Homemade jump starter: a DIY car emergency power supply, turning a bought Bluetooth-speaker shell into a car jump-start pack04:38
Homemade jump starter: a DIY car emergency power supply, turning a bought Bluetooth-speaker shell into a car jump-start pack
Doomsday Lab274107124
Homemade jump starter, DIY car emergency power — turning a bought Bluetooth speaker shell into a car jump pack04:38
Homemade jump starter, DIY car emergency power — turning a bought Bluetooth speaker shell into a car jump pack
Doomsday Lab274107124
A home-made jump starter from 18650 cells — only 2C cells, picked up for ¥20-odd on the Douyin store; DIY car emergency power, built into a bought Bluetooth-speaker shell03:36
A home-made jump starter from 18650 cells — only 2C cells, picked up for ¥20-odd on the Douyin store; DIY car emergency power, built into a bought Bluetooth-speaker shell
Doomsday Lab19868108