Service manual
Maintenance
11–2 B.A.S.I.S. V Service Manual
REPLACING THE BACKUP BATTERY
Removing the
backup battery
A replacement kit is available for the backup battery. See page 4–5.
1. For standard locks, remove the inside and outside escutcheons 
from the door. For mortise lock instructions, see page 5–3. For 
cylindrical lock instructions, see page 7–5.
For exit hardware trim, remove the B.A.S.I.S. escutcheon from the 
door. See page 8–13.
2. For standard locks, remove the gasket from the outside escutcheon 
to expose the control electronics board and discard the gasket.
For exit hardware trim, remove the following parts from the 
escutcheon to expose the control electronics board:
■ mounting standoffs (page 10–2)
■ escutcheon gasket (page 10–3)
■ lift finger (page 10–4)
■ mounting plate (page 10–6).
3. Remove the backup battery from the battery socket.
Figure 11.1 Removing the backup battery (escutcheon for standard mortise lock 
shown)
Outside escutcheon
Lift the battery here.
Battery clip










