To remove the battery door (K), push down on the two ovals (L) with your thumbs and slide the battery door back.
Disconnect the small white battery plug, and remove the battery.
Insert a new battery and reconnect the battery plug.
Replace the battery door securely on the device.
The DermLite II Pro uses a special lithium-ion battery, which can only be purchased from 3Gen or from an authorized 3Gen dealer.
Caution: Do not under any circumstances use another battery other than the one designed for this unit. Doing so could result in damage to the unit.