The current Lithium-ion Battery has two major issues.
The two commanding factors of how batteries react is voltage and temperature. With that said, the external environment also plays a crucial role, as it controls voltage, temperature and electrochemical reactions which result in the internal disturbances of the batteries. Most accidents are accompanied by continuous heat and gas generation causing battery rupture and ignition of the combustible materials
Limited capacity and cycle life
The cycle life of batteries is the number of charge and discharge cycles that a battery can complete before losing performance. The cycle life of Li-ion batteries is affected significantly by the depth of discharge. The depth of discharge is the amount of a battery’s storage capacity that is utilized.