Polar A300 user manual Precautions, Changing Heart Rate Sensor Battery

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When the display is blank, the battery is empty and A300 has gone to sleep mode. Charge your A300. If the battery is totally drained, it may take a while for the charging animation to appear on the display.

CHANGING 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.Using a coin, open the battery cover by turning it coun- terclockwise to OPEN.

2.Insert the battery (CR 2025) inside the cover with the positive

(+) side against the cover. Make sure the sealing ring is in the groove to ensure water res- istance.

3.Press the cover back into the con- nector.

4.Use the coin to turn the cover clockwise to CLOSE.

Danger of explosion if the battery is replaced with wrong type.

PRECAUTIONS

The Polar A300 is designed to measure heart rate and tell your activity. No other use is intended or implied.

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Contents Page Contents Training Training Summary FeaturesPolar Flow App and Web Service Firmware Update Reset A300 Important Information Page Polar A300 IntroductionPolar Flow App USB cableAfter the setup is done, you’re ready to go. Have fun SET UP Your A300GET Started PictureBasic Settings Quick SET UPWristband Page Button Functions Button Functions and Menu StructurePractical Tips Menu Structure PairingPair a Mobile Device with A300 Pair a Heart Rate Sensor with A300Delete a Pairing Sport Profile Settings SettingsSettings Sport ProfilesGeneral Settings Physical SettingsPair and Sync Flight ModeInactivity Alert UnitsAlarm Watch SettingsAbout Product TimeWatch Face Date FormatWear Heart Rate Sensor TrainingStart a Training Session with a Target Start a Training SessionTraining Views During TrainingTraining with Heart Rate Training with a Duration or Calorie Based Training Target Training Without Heart RatePage Training with a Phased Training Target Functions During Training PAUSE/STOP a Training SessionLock a Zone See the Time of DAYPage After Training Training SummaryTraining History in A300 Polar Flow APP Polar Flow WEB Service24/7 Activity Tracking FeaturesActivity Goal Activity DataInactivity Alert Activity Data in Flow APP and Flow WEB Service Sleep Information AT Flow WEB Service and Flow APPSport Profiles Smart Calories Smart Coaching FeaturesEnergy Pointer Target zone Intensity % of HRmax Heart Rate ZonesExample Heart Hard Light Very Light Target zone Intensity % of HRmax Before the Test Fitness TestPerforming the Test TroubleshootingTest Results Women Age / Years Very low Feedback Benefit Training BenefitFeedback Benefit Feedback Polar Flow APP and WEB Service Feed Plan Your TrainingExplore DiaryCreate a Training Target Phased targetQuick Target FavoritesSync the Targets to Your A300 FavoritesAdd a Training Target to Favorites Edit a Favorite Sport Profiles in Flow WEB ServiceRemove a favorite ADD a Sport ProfileBasics SyncingHeart Rate Gestures and FeedbackSync with Flow APP Sync with Flow WEB Service VIA FlowsyncPage To update the firmware Firmware UpdateReset A300 Taking Care of Your A300 Important InformationHeart Rate Sensor ServiceStoring Batteries Charging A300 BatteryLOW Battery Notifications Battery Operating TimeChanging Heart Rate Sensor Battery PrecautionsInterference During Training Minimizing Risks When TrainingElectromagnetic Interference and Training Equipment Technical Specification Polar Flowsync Software and USB Cable H7 Heart Rate SensorPolar Flow Mobile Application Compatibility Marking on case back Water resistant characteristicsWater Resistance Computer operating systemMarking on case back Limited International Polar GuaranteeCompliance Statement Canada Compliance StatementAvis de conformité à la réglementation d’Industrie Canada Industry Canada IC regulatory informationUSA FCC regulatory informationDisclaimer