Reviews

Battery set for heart rate sensors, and sports and fitness watches RCX3, FT80, FT60, FT40, and FA20 is rated 3.3 out of 5 by 21.
Rated 1 out of 5 by from New battery died within 3 months. Not happy. It was very difficult to replace the battery - the new "lid" (whatever you call the cover) did not want to close properly. Finally got the new battery installed -- and then it died after only a few months. Not happy at all. Will not buy another polar product.
Date published: 2017-05-01
Rated 5 out of 5 by from Works great!! I had no problems installing it. It worked great and connected fine.
Date published: 2017-04-21
Rated 5 out of 5 by from Excellent purchase Set was simple to purchase, delivered fast and easy to install. Back to the gym!
Date published: 2017-04-01
Rated 5 out of 5 by from Other Reviewers Don't Know What They're Doing... I recently ordered 2 replacement battery sets for my FT60 and heart rate sensor. When I received them, I was a bit confused (especially after reading all the reviews here). There were rubber seals that were separated from the batteries and battery covers. They were definitely too big for the replacement covers, so I was very irritated at first. However, these were NOT the rubber seals that are supposed to go on the new covers. IN FACT, the replacement battery covers already had their rubber pieces on them. The extra rubber seal in each battery replacement kit is for the EXISTING metal battery cover for your Polar watch/monitor that can't be replaced by the new plastic replacement cover. So, if you are purchasing a battery replacement kit, you will use all pieces except the extra rubber seal for your old heart rate sensor. However, you will use the new rubber seal (but not the new plastic battery cover) if you are replacing the battery in your old Polar watch/monitor. I hope this makes sense. :)
Date published: 2017-01-18
Rated 1 out of 5 by from It stopped working I bought the m400 with the heart rate monitor (h7) and after a few months it stopped working all together. I thought it might need the battery set to be replaced. After buying the battery set, it still did not work.
Date published: 2016-10-04
Rated 1 out of 5 by from Poor quality First time replacing the battery in my polar heart rate monitor and it doesn't work. That's pretty sad if that's as long as this heart rate monitor works. I didn't misuse or abuse it. Only used it on the treadmill.
Date published: 2016-07-23
Rated 2 out of 5 by from Great when it works I got the heart monitor to start tracking total calories burned to help with weight loss. When it's working it's a great product. The battery went dead within 5 months which is normal but I bought the replacement battery set and followed all the steps correctly, still can't get it to work with a brand new battery. When through the entire trouble shooting page and even tried pairing the device with a different phone. Still nothing
Date published: 2016-07-19
Rated 4 out of 5 by from Battery works great gasket bad As mentioned in previous comments, the battery works great. The gasket that came with the new battery was scratched and to large to be used.
Date published: 2016-05-27
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