在需要的功率激增时，拖船可以从电池获得额外的电力；当它闲置时，可将其柴油发动机关闭，用电池为其它设备供电。
The tugboat could draw extra power from the battery when full-power surges were needed, and turn its diesel engines off altogether when it was idle, allowing the battery to power other equipment.
有关性能命中，那么这是相当明显的，它需要较长时间闲置起来，如此反复，更多的电池消耗。
About the performance hit, well that's pretty obvious and it takes longer to idle up, so again, more battery drain.
这些功率消耗是锂离子电池闲置时每月损耗5%电量的原因之一。
This power draw is one reason why lithium-ion batteries lose 5 percent of their power every month when sitting idle.
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