But a magnesium atom would carry two electrons, so a battery storing a given amount of energy could be nearly halved in size and weight.

但镁原子每次可以携带两个电子，这样的话在储存相同能量时可以使电池的大小和重量减半。

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The amount of energy a battery can store depends on the volume of its electrodes, so a thin battery does not last long.

因为电池能存储的总能量依赖于它电极的体积，一个小的电池是不能长时间供电的。

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The car will carry a 16 kilowatt-hour battery, which is about the amount of power that a suburban house uses in 12 hours.

这种汽车将使用16千瓦的电池，这相当于城郊一户人家12小时的用电量。

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One of the greatest constraints to adding additional security features is the very limited amount of battery power available.

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With the press of a button, LED charge indicators provide the user with the amount of battery charge left in their device.

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Highly condensed lithium polymer battery delivers an incredible amount of juice in a small form factor and features built in overcharge, short circuit, and temperature protection.

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