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Comment I once was working on a Pi Zero of this (Score 4, Interesting) 65

I once was working on a project to use a Pi Zero and Debian with the Pi 7" touch screen to make a little reader - not bad, but I got stuck when I needed to get a 3D printed case made.
I currently do all of my ebook reading (and that's a LOT of reading) via only DRM-free platforms and read them on my little lenovo android tablet.
Doesn't solve the textbook issue obviously, though stuff like OpenStax is a step in the right direction.

I hope FSF has success in this area.

Comment Laptop 18650 (Score 1) 95

You can usually see which laptops use 18650s, by the shape of the case. Pick a laptop, and search Amazon for replacement batteries.

I strip the 18650s out of laptops for other uses. It's just cheaper that way. It usually works out to about $1 for each 18650, including the occasional bad battery.

Thin squares, like the MacBook Pro have, are different. It's pretty obvious that an 18650 wouldn't fit in it.

Built in batteries are more likely to be flat square or rectangle types. You're SOL for replacing those with a pack of 18650s.

I only strip them down for their cells. I suppose if you're *real* careful, you could cut the case open, and be able to reseal it. There are temperature sensors inline, that you'll want to keep. and you'll need to solder the new ones together. They're typically spot welded. And, obviously, you'll need to keep the original control board. ... or just buy a replacement pack on Amazon or eBay. When the batteries die in the laptops I use, I don't try to remanufacture them. While I could do the parts cheap, the labor would exceed the cost of the replacement pack.

https://www.youtube.com/watch?...

Comment Re:Horrible idea.. (Score 1) 96

I've probably had thousands of lithium ion batteries pass through my hands over the years.

When I started playing Ingress, battery packs weren't popular and yet, so we carried spare batteries. To play for hours, we had to swap batteries, or be tethered to a car. They were dropped, manhandled, and otherwise abused. Of everyone I know that did it, none died. No explosions. No fires.

The only real thing we found was, repeated charge/discharge cycles daily did eventually degrade the life of the batteries. A typical work day could be 1hr before work, .5 hours on smoke breaks and lunch, and a few hours in the evening. That's just Ingress. Actually using the phone as a phone added hours, but didn't suck up the battery life as much.

We see the same from ecigs and 18650 batteries. I only made one smoke, and that was by physically cutting the battery open. I wanted to see what was inside. :)

The only battery that I've had swell to the point of almost bursting was a Macbook Pro's battery. I stopped using it months before, and only noticed when the battery cover popped off by itself.

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