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Category Archives: battery
Microbatteries On The Grid
Not everybody has $6500 to toss into a Tesla Powerwall (and that’s a low estimate), but if you want the benefits of battery storage for your house, [Matt]’s modular “microbattery” storage system might be right up your alley. With a build-as-you-go model, virtually any battery can be placed on the …read more
Posted in battery, green hacks, grid, microinverter, modular, Raspberry Pi, solar, storage
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Lighting Up a Tiny Train Needs Tiny Tools
A tiny toy train that [voidnill] illuminated with a small LED strip fragment demonstrates several challenges that come with both modifying existing products, and working with small things in general. One is that it is hard in general to work around existing design choices and materials when modifying something. The …read more
Fun-Size Tesla Might Be The World’s Smallest
We get all kinds of tips about “the world’s something-est” widget, which normally end up attracting the debunkers in droves. So normally, we shy away from making superlative claims about a project, no matter how they bill themselves. But we’re comfortable that this is the world’s smallest Tesla, at least …read more
Posted in 18650, battery, BLDC, go cart, model S, replica, tesla, transportation hacks
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Cheap Strain Relief By Casting Hot Glue in a 3D Print
[Daniel Roibert] found a way to add cheap strain relief to JST-XH connectors, better known to hobby aircraft folks as the charging and balance connectors on lithium-polymer battery packs. His solution is to cast them in hot glue, with the help of 3D printed molds. His project provides molds fitted …read more
Posted in 3d printed, 3d Printer hacks, battery, casting, drone hacks, hot glue, how-to, JST, jst-xh, lipo, mold, rc, strain relief
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The Quest To Find A Second Life For Electric Vehicle Batteries
Rechargeable lithium chemistry battery cells found their mass market foothold in the field of personal electronics. The technology has since matured enough to be scaled up (in both physical size and production volume) to electric cars, making long range EVs far more economical than what was possible using earlier batteries. …read more
Choosing The Right Battery For Your Electric Vehicle Build
Many a hacker has looked at their scooter, bike, or skateboard, and decided that it would be even better if only it had a motor on it. Setting out to electrify one’s personal transport can be an exciting and productive journey, and one that promises to teach many lessons about …read more
Hackaday Links: December 15, 2019
When you’re right, you’re right. Back in January, we predicted that exoskeletons were about to break out as a mainstream product, and gave several examples of prototypes poised to become products. So it was with interest that we read about Sarcos Robotics and their new Guardian XO, a cyber suit …read more
Lessons in Li-Ion Safety
If you came here from an internet search because your battery just blew up and you don’t know how to put out the fire, then use a regular fire extinguisher if it’s plugged in to an outlet, or a fire extinguisher or water if it is not plugged in. Get …read more
Protect Your Batteries Before You Wreck Your Batteries
[Jan] is solving a problem many of us have had, deeply discharging our project’s batteries and potentially damaging the cells.
His board can handle batteries from 6 to 34 volts and supports both LiPo or Lion batteries. The board can be flexible about its cut-off voltage. It also has a …read more
Posted in battery, lion, lipo, protection, The Hackaday Prize, The Hackaday Prize 2019
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Better Battery Management Through Chemistry
The lead-acid rechargeable battery is a not-quite-modern marvel. Super reliable and easy to use, charging it is just a matter of applying a fixed voltage to it and waiting a while; eventually the battery is charged and stays topped off, and that’s it. Their ease is countered by their size, …read more