According to the operators manual:
"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"
http://healthygumsandteethnow.com/services/rotadent-step-electric-toothbrush/rotadent-step-electric-toothbrush-faq/
No it is an internal battery and the manufacturer, although realizing that the battery life seems to be an issue, has not offered a fix for the problem.
To replace the battery in a Casio 1827 watch, place a soft cloth under the face of the watch to prevent scratches. Locate the small dent on the back of the watch and slide the blade of the knife under the back so that it pops off. Remove the old battery, replacing it with a new one and returning it to the same position. Replace the back of the watch.
If you need a battery then there is nothing that can replace it.
how to replace battery
how to replace a mitsubishi endeavor battery
if the battery gets weak and useless, then you have to replace it...
Nino Rota's birth name is Giovanni Rota Rinaldi.
no
how to replace a 1990 Chevy Beretta battery
Lift up rear seat & replace battery
The battery is located under the backseat, Lift the seat up and replace the battery.
Remove the seat. Remove the battery. Replace the battery. Replace the seat.