The backup battery should be replaced at least once per year.
每年应该至少更换一次备用电池。
Look for a Child unit that has a backup battery in case of power failure.
寻求一个儿童组表示，有一个备用电池，在案件的电力供应中断。
If there is an issue with the diesels, you have a battery backup.
如果柴油发电机也发生故障，你还有一个备用电池组。
It combines a battery and inverter for portable electricity and backup power anytime.
它结合了电池和逆变器的便携式供电和备用电源随时。
With battery backup, for a long time away.
设有备用电池，长久走时。
The XP1-2500 Cable battery backup unit is as small size battery.
XP1- 2500型号的电缆的备用电池的巨细，跟电池的巨细尺寸一样。
The solution is available in two models-standard (PB24) and battery backup (PB24BB).
解决方案有两种模式，一是标准(PB24)和后备电池(PB 24 BB)。
The solution is available in two models-standard (PB24) and battery backup (PB24BB).
解决方案有两种模式，一是标准(PB24)和后备电池(PB 24 BB)。
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