Polar HRM Receiver Battery Replacement

DISCLAIMER: THIS VOIDS YOUR WARRANTY. IT MAY COMPROMISE THE WATERPROOFNESS OF YOUR RECEIVER. DO NOT TRY THIS AT HOME.

That all said, my Polar S410 is so far out of warranty. And missing at least two buttons. I sent it off to get everything fixed last time, and they did fix it, but the buttons fell off again. So I give up.

Fitz's Polar S150 also had a battery death.

First Learning: every receiver has a different battery. Open yours up first, to see what it needs, then go buy it. For really obscure batteries, try Batteries Plus. Less obscure, Radio Shack. If your receiver wants a 2032, you can get those anywhere.

Tiny little jeweler's screwdrivers, good lighting, a fuzzy cloth so everything doesn't roll away.

Open the back. Note how the battery is wedged in. Our receivers had different battery retention methods, as well. Mine was easy to figure out. Fitz's was downright weird. The bright thing to do is take a picture before you take it apart, so you'll have a record of the proper orientation of putting it all back together.

Pop out the old battery; put in the new one. Admire that your display again has a readout! Reattach that battery retention thingie.

A tweezer will help you get the infinitesimal screws back into their holes. Screw them down tight, but exercising caution not to strip the screw head!

Now, find your manual or view it online to set your time and date. My receiver actually remembered all my personal settings, which was way cool, since I had only written down my HR zones, but not my VO Max.

And, like I said:
DISCLAIMER: THIS VOIDS YOUR WARRANTY. IT MAY COMPROMISE THE WATERPROOFNESS OF YOUR RECEIVER. DO NOT TRY THIS AT HOME.