Sony SPP-A985 - Manual (Page 15)

Getting Started
15 US Getting Started
Handset spare battery usage
As only one battery pack is supplied with this unit, it is necessary to
purchase an additional battery pack (optional) for use as a handset
spare battery pack.
1
Open the battery compartment
lid of the base phone.
2
Insert the battery pack (with
contacts facing down) into the
battery compartment.
3
Close the battery compartment
lid.
The SPARE BATT lamp lights
up. Charge the battery pack for
more than 24 hours so that the
battery is fully charged. The
SPARE BATT lamp remains lit
even after charging is
completed.
SPARE BATT lamp
BP-T23