My Polar chest strap provides "easy" access to change the battery. The problem is the little indention intended for a coin or screw driver is a bit stripped. I can not get the cover to budge. Are there any tricks for getting it unscrewed?
An expert who has achieved level 3 by getting 1000 points
An expert that got 20 achievements.
An expert that got 10 achievements.
An expert that got 5 achievements.
Re: can not change battery on Polar chest strap
Yes, there are a few. 1) As you may noticed, coin and even screwdriver blades are never sharp, but mostly blunt. So, sharpen the edge of the coin on a piece of sandpaper. Get hardened steel screwdriver or very sharp, pointed end file and scrape that indention (groove) to make sure the channel have straight sides, forming I_I shaped groove, but not V shaped groove. When done, insert the sharpened coin and unscrew the battery cover using some pressure as well. 2) In case if the groove is stripped completely, you will have to drill two small holes into the battery cover. Drill them 1mm from the battery cover's edge on opposite sides. Depth of holes should be 0.5 mm. Do not drill through completely. For drilling use 0.3-0.5 mm diameter drill bit. When finished with both holes, take hardened tweezers, insert each arm into separate hole and unscrew the battery cover. Do not forget to rate, please.
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
There is a step by step guide in my tips and tricks of things to try with your strap. If none of these work and you are getting a signal from another source then you need to get either a new strap, a new sender or both. If you send the T-31 wearlink into polar they can run a diagnostic and see which is bad and sell you just the piece you need or a whole new chest piece.
There is no reset on the T-31 chest straps and transmitters. If the battery is functioning then you simply put it around your chest (make sure the contacts are wet) and turn on the watch. A heart rate signal should appear automatically.
If this doesn't work, I have solutions in my tips and tricks page as well as Manuals for Polar products. The T-31 battery may also be dead, in which case you will need to replace.
The picture you have showing is for a S-Series Speed sensor for the Bike. If this is something you are having a problem with feel free to send me a note related to the problem.
It could be the battery on the strap is not good. However just to be sure make sure you are wetting the strap and it is around chest, front should sit right about on the bottom of pectoral or chest, if you are female make sure it is under your sports bra the bra band will be over it. I would start warming up then hit the start button it should work.