Batteries
Batteries are very important medium to store the energy . these are of two types * Primary battery * secondary battery Primary batteries are basically those batteries which can not recharge after the discharge one of the example of primary battery is dry cell , which we often use in our wall clock ,remotes and toy cars secondary batteries are those battery which can be recharge after the full drain the examples of these batteries are * Li-ion batteries which use in mobile phones * lead acid batteries which use in our inverter * Li PO batteries which use in drones and laptops.
