Category Archives: 18650

Cross-Brand Adapter Makes for Blended Battery Family

Even though he’s a faithful DeWalt cordless tool guy, [Richard Day] admits to a wandering eye in the tool aisle, looking at the Ryobi offerings with impure thoughts. Could he stay true to his brand and stick with his huge stock of yellow tools and batteries, or would he succumb to temptation and add another set of batteries and chargers so he could have access to a few specialty lime green tools?

Luckily, we live in the future, so there’s a third way — building a cross-brand battery adapter that lets him power Ryobi tools with his DeWalt batteries. [Richard]’s …read more

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Posted in 18650, adapter, charger, controller, cordless, dewalt, Li-ion, ryobi, tool hacks | Leave a comment

Repairs You Can Print: Nintendo DS Lite With New Battery And Case

The problem with hanging on to old consumer products is that the original batteries no longer hold a charge. To make matters worse, replacement batteries ordered online have likely been sitting on a warehouse shelf for years and are no better. [Larry G] faced this issue with his old Nintendo DS Lite. Luckily he remembered a hack from his youth where a friend’s Dad had duct-taped a massive alkaline D-cell battery pack to the back of a Gameboy to give it a longer life. And so [Larry] gave new life to his Nintendo DS Lite by designing and 3D printing …read more

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Posted in 18650, 3d Printer hacks, battery holder, contests, Nintendo DS, Repairs You Can Print | Leave a comment

Build a Tiny Hot Wire Foam Cutter

Let’s face it: cutting foam with a knife, even a serrated plastic knife meant for the job, is a messy pain in the ass.  This is as true for insulation board as it is for the ubiquitous expanded polystyrene kind of foam used for everything from coffee cups to packaging material.

Those stick-type hot wire cutters from the craft store that plug into the wall aren’t much better than a knife. The actual cleaving of foam is easier, but dragging a long, hot flexible wand through rigid foam just right, without making burn marks, is pretty frustrating. It’s not like …read more

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Posted in 18650, classic hacks, expanded polystyrene, hot wire foam cutter, how-to, nichrome wire, styrofoam, tool hacks | Leave a comment

Monstrous USB Power Bank

At some point, cleaning out the spare parts bin — or cabinet, or garage — becomes a necessity. This is dangerous because it can induce many more project ideas and completely negate the original purpose. [Chaotic Mind], considering the pile of  batteries he’s collected over the past decade, decided that instead of throwing them out, he would recycle them into a grotesque USB power bank.

Inside the bulk of this power bank are an eye-popping 64 18650 Lithium Ion cells, mostly collected from laptop batteries, and wired in a parallel 8×8 pattern with an estimated capacity of over 100,000mAh(!!).  The …read more

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Posted in 18650, battery, duct tape, fire extinguisher, hardware, lithium, power, power bank, usb | Leave a comment

DIY LiPo Protectors

Spiderman’s Uncle Ben was known to say, “With great power comes great responsibility.” The same holds true for battery power. [Andreas] wanted to use protected 18650 cells, but didn’t want to buy them off the shelf. He found a forty cent solution. Not only can you see it in the video, below, but he also explains and demonstrates what the circuit is doing and why.

Protection is important with LiPo technology. Sure, LiPo cells have changed the way we use portable electronics, but they can be dangerous. If you overcharge them or allow them to go completely dead and then …read more

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Posted in 18650, battery charging, dw01, lip, misc hacks | Leave a comment