1. Security issues. Spherical graphite lithium battery may cause thermal runaway, explosion or fire under extreme conditions, which is caused by the characteristics of lithium metal and chemical reaction in electrolyte.

2. Limited energy density. The energy density of spherical graphite lithium battery is relatively low, which means that the energy stored in the same volume or weight is limited, which limits the battery's endurance and is not ideal for some high-power applications or long-distance equipment.