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。
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)。
With battery backup, for a long time away.
设有备用电池，长久走时。
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。
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。
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