To be any use in consumer electronics, and especially electric cars, solid-state batteries would need to be bigger and capable of being cranked out in greater numbers.

要用于消费电子产品，特别是电动汽车这样的产品，全固态电池必须容量更大，能够批量生产才行。

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But whether electric vehicles become popular depends on improving the technology, especially by developing better batteries.

但电动汽车是否能蔚为风潮则需取决于科技的改良，特别是能否开发出更好的电池。

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Others are more optimistic, especially in the light of advances in engineering and materials science since the last attempt - notably in lightweight carbon fibre composites and energy-dense batteries.

其他人比他乐观得多，尤其是自从上次尝试以来，我们在工程和材料学方面又有了更多启发——值得一提的是我们发明了轻质碳纤维化合物和高能量密度电池。

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We also discussed battery life and competing phones that come with physically larger batteries (especially the Droid Razr Maxx), but Vice President of Phone Strategy Bjorn Kilburn claims that for most customers going into the shops, power consumption is not on the top of their lists.

ENGADGET: HTC talks smartphone design: from inception to final product

All planes have batteries, but the Dreamliner needs especially powerful ones because its control systems are driven entirely by electrical signals in place of the hydraulic controls seen on earlier generations of jet.

BBC: Boeing 787: Dreamliner's lithium ion batteries probed

Those batteries are used to power electrical systems, especially when the plane's engines are idle.

CNN: What's wrong with the Dreamliner?