Product Manual
66 Maintenance and Service Welch Allyn Spot Vital Signs LXi
Welch Allyn supplies a rechargeable battery pack with the Braun ThermoScan PRO 4000 
thermometer. 
1. Open the battery compartment.
2. Remove the battery pack and replace with a new battery pack, verify the poles are in 
the right direction. 
3. Slide the battery door back in until it snaps into place.
If the battery is completely discharged, the LEDs will not illuminate. Allow the unit to 
charge at least 15 minutes before proceeding.
Printer
1. Open the battery compartment.
2. Remove the battery pack and replace with a new battery pack, verify the poles are in 
the right direction. 
3. Slide the battery door back in until it snaps into place.
Allow the printer to charge at least 6 hours before initial use.
The battery is a rechargeable battery and must be recycled or disposed 
of properly according to national or local regulations.
Caution Do not use alkaline batteries in the printer.
The battery is a rechargeable battery and must be recycled or disposed 
of properly according to national or local regulations.










