Rechargeable batteries are consumable components that chemically age and become less effective over time, and the capacity of any type of battery will diminish after a certain number of charges.
With each complete charge cycle, the battery’s maximum capacity (the “volume” of the energy that a battery can hold) diminishes slightly, resulting in a device needing to be recharged more often.
Beocom EX batteries can retain up to 80% battery of their original capacity after 500 charge cycles.