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UltraCapacitors to Replace Batteries?

Posted on February 29, 2008

Popular Science has just gotten a scoop that I've been waiting for ages to see. Ultracapacitors, which are completely shunned by most auto companies, have been quietly continuing development at small companies and in unviersities all over the world. The reason they've been so largely ignored is that they hold so much less energy than batteries. The best commercially available ultracaps have about 5% of the energy density of batteries.Yet they also have tremendous advantages. You can charge them all the way up and all the way down without damaging them (lithium ion batteries stop functioning wh...

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batteries , battery , hybrid , hybrid cars