
Phone: 877-736-8745 • Fax: 513-618-5801
www.sentrilock.com
2710 East Kemper Road • Cincinnati OH 45241
Changing the Battery in an NXT/NXT Wireless Lockbox
Introduction
The NXT/NXT Wireless (blue) REALTOR® lockbox has an internal lithium battery The batteries in
NXT/NXT Wireless lockboxes last up to 6 years, depending upon climate, storage and use
Note: Do not remove old batteries from a lockbox until you have a replacement in hand Also, do
not carry unpackaged batteries in your pocket or purse as metal objects could cause a short
circuit and thereby cause bodily harm or property damage
What you Will Need
To replace the battery in an NXT/NXT Wireless (blue) lockbox, you will need:
•2 lithium type CR123A batteries Contact your Association in regards to obtaining batteries
for your lockbox
•A Phillips head screwdriver to remove the battery cover screws
The battery cover for an NXT or NXT Wireless (blue) lockbox is easy to
identify because it may have a label with a picture of a crossed out key
affixed to it This label can be found inside the key compartment, against the
back side of the lockbox
Note: If the lockbox shows no signs of activity and you cannot access
the key compartment, the battery is dead You can use a power
paddle to provide a temporary charge to the lockbox and access the
battery compartment Contact your Association to obtain a power
paddle
How to Replace the Battery in an NXT/NXT Wireless Lockbox
Follow the instructions below to replace the battery in a NXT or NXT Wireless (blue) lockbox:
1 Insert your SentriCard® into the lockbox and enter your PIN + ENT Wait for the READ light and
pull your SentriCard® out of the lockbox This should open the lockbox key compartment
2 After you open the key compartment, use a Phillip’s head screwdriver to remove the battery
cover screws