Tag: chemistry

CITYSAX 160Ah LiFeYPO4 battery discharge and teardown (WHL #51)

Speaking of electric cars: A colleague recently bought a used electric car and (obviously!) contacted me in order to diagnose/troubleshoot it. Sadly he was able to sell it for a profit before we got it fully fixed, so no live data recordings, no power/torque graphs, no nothing to show here. But he left me a dead cell for which he got a replacement from the seller right away, as the traction battery had voltage dips under load that indicated (at least) one damaged cell.

If servicing individual battery cells sounds a bit strange for a modern electric car, that’s because we’re talking about a CITYSAX from a company that is conveniently named the same. […]


Kitchen Egg Timer Boiled Soft Hard Medium Color Changing Boiled Hourglass JAPAN (WHL #19)

Look, we’re steering off track…even fewer electronic parts than in the last slimy post! We’re back to the steam era!

I’m not planning to become an universal gadget tester, but I had to check this one which was in today’s mail. I got it from eBay merely two weeks ago and I paid 4.99 USD for it, including economy shipping. And now I’m a proud owner of some Nippon stamp worth 180 Yen, which in itself is around 1.5 USD. I didn’t buy on Ali this time because they only offer generic or German “Pearl” branded items (go figure). […]


Adroit High-Tech Magic Sticky Jelly Compound Super Clean Slimy Gel Computer PC Laptop (WHL #18)

After the hard facts of the last Wan Hung Lo post, let’s get a little softer, a little more slimy…and gross. You’ve been warned ;)

Today’s item is some cleaning gel that I bought at the end of January on AliExpress for 1.36€ including shipping. I’m not even sure how it is called, the package is mostly non-latin characters, but apparently it’s from “Super Clean Europe”…guess the Asian versions have more funky colorings added to them.

I cannot spot any weight, amount, volume marking on the bag, maybe the “80” on the bottom indicates 80g. […]