LIR-3048 Battery

These are NEW replacement batteries for Garmin Forerunner 405s, 410s and others too.

You can find instructions for replacement on youTube. http://youtu.be/Eqs1S0FtiBM

Specs: 3.6V 300mAh 30.5*5.5mm RoHS compliant

Expect the same performance from this battery as when your watch was new. See your owner's manual page 40. The stock battery lasts 3-5 hours in Training Mode.