volta cell

例句：

1. 1. The volta cell is used to store energy for charging devices.
   伏打电池用于为充电设备储存能量。
2. 2.Volta cells are commonly used in power systems as a source of direct current.
   伏打电池在电力系统中常作为直流电的来源使用。
3. 3. In the early days of electric lighting, volta cells were the primary source of electricity.
   在早期电灯时代，伏打电池是主要的电力来源。