The lithium battery pack for a Nagra 6 digital recorder costs $700. Markus Fuller opened one and found out it has a small battery in it (with 6 cells worth a total of $30), and a large sponge. It must be an awesome sponge! As he opens it, he gives an interesting and entertaining lesson on the history of lithium batteries.
Caveat emptor: Nagra sells a more expensive battery pack, which contains more batteries, so you won't get as much of the magical sponge if you buy it.
Fuller has a good video about capacitors, too:
My local cable monopoly is Spectrum, part of Charter, and I refuse to get anything except internet service through them (alas, my city, Burbank, will not sell me access to our amazing, 100GB/s fiber network, which runs directly under my house, because they have a deal with Charter not to connect any non-commercial-zoned properties to […]
Louis Rossman is one of the highest-profile independent Apple repair technicians, famous in part for fixing devices that Apple has declared to have reached their end-of-life, diverting these devices from landfill and keeping them in the hands of the people who paid good money for them.
Canada’s CBC News went into Apple Stores with hidden cameras and discovered that the Geniuses there were especially smart when it came to ripping off customers who brought their equipment in for repair. In some cases the Geniuses told customers that they should buy a new computer, phone, or iPad rather than fix their broken […]
These days, there isn’t much our iPhone camera can’t do – except feel like an actual phone. Despite years of steadily increasing resolution and image sensing technology, we’re still taking shots awkwardly with two hands, fumbling for the shutter button. Leave it to an avid photographer to design Shuttercase, a versatile iPhone case that solves […]
Still determined to keep those New Year’s health resolutions? If you’re going to stick with the exercise plan, it’s enough of a challenge to budget your time. No need for your financial budget to take a hit, too. Here’s a more convenient – and cheaper – alternative to a gym membership or Peloton bike: Two […]
Want a career in web design? It’s true that these days, most anyone can throw up a page or two. But for true workhorse web design, you’ll sometimes need to match the platform to the project. Enter the Complete Front-End Developer Bundle, an educational grand tour around the best tools for the web. For beginners, […]