Combined with some modifications to the idle frequency, battery life does not suffer hugely.
对空载频率进行一些修改后，电池寿命不会受到太大损耗。
2
So that means the phone has to regularly go active, get the data it needs, then go idle again, and over time all those little transitions add up to a lot of battery life and network traffic.
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.