In electricity, a battery is a device consisting of one or more electrochemical cells that convert stored chemical energy into electrical energy. Since the invention of the first battery (or " voltaic pile ") in 1800 by Alessandro Volta and especially since the technically improved Daniell cell in 1836, batteries have become a common power source for many household and industrial applications. According to a 2005 estimate, the worldwide battery industry generates US$ 48 billion in sales each year, with 6% annual growth.


 
    
 
    


 
    

 
    
 
    
 
    
![[eBay Plus] 12V 110Ah Lithium Iron Battery LiFePO4 $216.30 Delivered @ Outbax eBay](https://files.ozbargain.com.au/n/94/816094.jpg?h=bb3147fa)



 
    
 
    
 
    
 
    

 
    
