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Lithium-Ion Battery Swells Up Like Jaba the Hutt

A frustrated design engineer whose company uses a proprietary lithium-ion battery made in China complained recently here in the Made by Monkeys blog about significant problems with those batteries swelling up. Bloated batteries sound like fodder for yet another “Made in China” recall story – and it’s not inconceivable that some manufacturing defect could turn out to be the culprit ...

Would you pay 15£ for this toothbrush?

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Prized by design engineers for its enviable strength-to-weight ratio and high modulus, titanium has made its way in recent years into all sorts of high-tech products from turbine engines to bicycle frames. Now, a new toothbrush with a titanium dioxide core in its handle has hit the market in Europe and the US. Developed by the Osaka-based Shiken Corp., the ...

Lead Acid Battery Goes Kapow!

The recent brouhaha in this blog over the underwhelming performance of lithium ion batteries and the care that must be taking when charging them reminded me of a case in Design News that involved an explosion of near-Hindenburg-like proportions. Oh I know what you’re thinking — it’s those incredibly thermodynamically unstable lithium ion batteries up to their old tricks again. ...