Answer : Battery
The battery is called the combination of two or more cells. It is mainly a collection of several compartments that can cause multiple reactions, and it can further result in a flow of several electrons in the circuits. The battery has mainly two parts. The positive part is called the cathode, while the negative aspect is named the anode. The batteries are primarily used in electric devices as it gives the power source to those electrical devices.
In more simple words, cells are mainly being used in the battery to create the current. It happens due to some chemical reaction. The battery’s capacity is high as it contains two or more cells. You can use the electrical device if it has battery power.