8 tECHNICAL DAtA
8.2 BAttERY CHANGE
1909
The battery change on the computer head and the transmitters (speed, cadence,
and/or chest belt) is shown on the display. After changing the battery, only the time
has to be entered again.
Computer head:
k Open cover with tool.
k Take note of polarity. When the battery compartment is open,
you must see the plus side of the battery.
k If the sealing ring is loose, put it back in place.
k Close cover with tool.
transmitters:
k Open cover with tool.
k Remove battery from cover.
k Take note of polarity.
k Insert new battery in the cover.
k Close cover with tool.
Battery:
Computer head:
Transmitter:
Battery lifespan:
Computer head:
Transmitter:
* if used one hour a day
1909
1909
Lithium button battery CR 2450
Lithium button battery CR 2032
approx. 1 year*
approx. 1 year*
1909
CR 2450
CR 2032
BC 1909 HR
25
26
27
28
29
30
31
32
47