battery power supply unit

基本解释

As a result, the AC supply lead must be removed from the unit in order to operate the unit on battery power.
因此，如使用機內乾電池，須將連接本機之交流電源導線拔去。
chinafanyi.com
The unit also offers voice guidance support in local languages and has multiple power supply options, including use with an automobile battery.
它還有本地語言的語音指導，支持多種電源選項，包括汽車電池的使用。
www.21csp.com.cn
This paper introduces a design of low power consumption of remote terminal unit based on solar battery, so as to realize the data supervision and control in no power supply.
提出一種基於太陽能電池的低功耗數據終耑的設計方案，實現無交流電場郃的數據監測與控制。