User's Manual

31
CHANGE THE HEART RATE SENSOR BATTERY
To change the battery of the heart rate sensor yourself, carefully follow the instructions below:
When changing the battery, make sure the sealing ring is not damaged, in which case you should replace it
with a new one. You can purchase the sealing ring/battery kits at well-equipped Polar retailers and authorized
Polar Services. In the USA and Canada, the additional sealing rings are available at authorized Polar Service
Centers. In the USA the sealing ring/battery kits are also available at www.shoppolar.com.
When handling a new, fully charged battery, avoid clasp-like contact, i.e. simultaneously from both sides, with
metal or electrically conducting tools, like tweezers. This may short circuit the battery, causing it to discharge
more rapidly. Typically, short circuiting does not damage the battery, but it may decrease the capacity and the
lifetime of the battery.
1. Lever the battery cover open by using
the clip on the strap.
2. Remove the old battery from the battery
cover with a suitable sized small rigid
stick or bar, such as a toothpick. A non-
metal tool is preferable. Be careful not to
damage the battery cover.
3. Insert a new battery (CR 2025) inside
the cover with the negative (-) side
facing up.
4. Align the ledge on the battery cover with
the slot on the connector and press the
battery cover back into place. You
should hear a snap.
Risk of explosion if battery is replaced by an incorrect type. Dispose of used batteries according to
the instructions.
PRECAUTIONS
The Polar V650 shows your performance indicators. The training computer is designed to indicate the level of
physiological strain and recovery during and after an exercise session. It measures heart rate, speed and dis-
tance. It also measures cycling cadence when used with a cadence sensor. No other use is intended or
implied.