Test with a small appliance if unsure. Remove brush head from power handle. Plug ONLY THE ROTA-DENT charger into outlet and insert the small adapter into the power handle. Charge the power handle for 24 hours before initial use. Ni-Cd batteries do not require constant charging.
Battery life is determined by the number of times it is recharged.
Disconnect the power handle from the charger. Do not leave charger plugged into the power handle. Power handle will not operate when connected to the charger. Follow steps 1-4 as listed above and recharge the power handle for 8 to 12 hours. Because the power handle is a sealed unit for protection from moisture, and for infection control and protection of the patient and our employees, the power handle is not repairable and the battery may not be replaced.