Polar S725X user manual S1 foot pod, Speed Sensor

1. Open the connector's battery cover by turning it counterclockwise with the coin from the CLOSE position to the OPEN position. The cover pops out from its niche.

2.Remove the battery cover from the connector, lift the battery from the niche and replace it with a new battery.

3.Remove the sealing ring of the battery cover and replace it with a new ring.

4.Place the negative (-) side of the battery against the connector and the positive (+) side against the cover.

5.Put the battery in the connector's niche and put the cover on so that the arrow points to the OPEN position. Make sure that the cover's sealing ring is placed correctly in its groove.

6.Gently press the cover deep enough so that its exterior surface is on the same level as the connector's surface.

7.Turn the cover clockwise so that the arrow on the cover turns from OPEN to CLOSE. Make sure that the cover is closed properly!

In order to ensure the maximum life span of the connector’s battery cover, open it only when you need to change the battery. We recommend that you change the sealing ring of the battery cover every time you change the battery. You can get the sealing ring/battery kits from well-equipped Polar retailers and authorized Polar Services. In the USA and Canada: Additional sealing rings are available from an authorized Polar Service Center only.

S1 foot pod

The battery of the foot pod needs to be replaced if the green light on the foot pod turns red or there is no light at all when you press and hold the red button on the foot pod. Check the easy start section for replacing the battery.

Speed Sensor

The estimated average battery life of the speed sensor is 2500 hours of use. We highly recommend you send the speed sensor to an authorized Polar Service Center for battery replacement, where the unit is tested after the battery has been replaced. However, if you prefer changing the battery yourself, please follow these instructions carefully:

Detach the sensor from your bicycle.

1.Open the sensor by removing the two small screws, counterclockwise, with a small screwdriver.

2.Lift the case off carefully. Hold the sensor cover upwards so that the PCBA (printed circuit board assembled) stays in the case.

3.Remove the PCBA carefully.

4.Press the battery holder gently. Release a hook of the holder from the opposite side of the PCBA and lift the holder upwards. Remove the old battery.

5.Insert a new battery with the plus (+) side facing up and press the battery housing gently so that it is attached to the PCBA at all corners.

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