With normal use, the battery in your Polar F6 wrist unit can last up to two years before it needs to be replaced. Polar USA heart monitors allow athletes of all ability levels to keep track of their ...

Polar recommends that the batteries in its heart-rate monitor be replaced by professionals; however, you can save time and money by replacing the battery yourself. Replacing the battery yourself, ...

A polar vortex will bring freezing temperatures ... we wake up on an icy morning wondering if the battery is dead. But what about cars that run on nothing but batteries? As more and more drivers ...

I am working in a system where I need a reverse polarity protection board between a charger and a battery (10s4p, 42V max). First i thought of using a low side protection as shown in next image: But ...