The Apex battery is the same battery type used in most cell phones. These batteries hold their charge well when stored and provide many charge/discharge cycles and therefore a long life. Based on the information received from the battery manufacturer, one could expect that after operating the Apex for 8 hours per day 5 days per week, the batteries would still have 80% of their capacity after 4 years. This is no guarantee but is a good indicator that the batteries will last a long time.
