The GENI or GENII (silver) REALTOR® lockbox has an internal lithium battery, lithium type 2CR5 battery. The batteries for the silver boxes are $5.99 each at AACAR, and comes with a tool to unscrew the back to change the battery.
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.
The NXT or NXT Wireless REALTOR® lockbox has internal lithium batteries. To replace the batteries in a NXT or NXT Wireless (blue) lockbox, you’ll need: 2 lithium type CR123A batteries. Contact your Association in regards to obtaining batteries for your lockbox. A Phillips head screwdriver is needed to remove the battery covers screws.
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.