back up battery

基本解释

Widely used in battery back up power systems and solar systems.
廣泛使用的電池備份的電力系統和太陽能系統。
However, from now on he hasn't been forget in the pocket to put one section back up battery.
不過，從此以後他一直沒有忘記在口袋裡放一節備用電池。
The PV cells are mounted on a pergola in the garden. A back-up battery ensures the operation of essential services in the event of power failure.
備用電池可以保証在PV系統無法供電又停電的情況下基本系統的運行。

The SMILE Plug includes a 5V Lithium-Ion polymer battery for back-up power, making it ideal for learning environments where electrical power can be inconsistent.
ENGADGET: blogger-avatar
After charging up the battery, sliding it into the rack system at the back of the bike (which could not be simpler), and locking it into place, you're ready to go.
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Xperia ZL also includes Battery STAMINA Mode that significantly improves the battery standby time by automatically shutting down battery-draining apps whenever the screen is off and starting them up again when the screen is back on.
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