Alternative battery for Smartthings multi sensor?

[jlv]

11 months ago I put AAA batteries in 2 of my v2 SmartThings Multipurpose Sensors to use on my garage doors using this 3D printed case linked below.

The CR2450 batteries only last about 3-4 months for me, and that’s with the sensor indoors. I’m now at 11 months with the pair of AAAs and they were exposed to a cold on the inside of the garage door (where it gets down to close to freezing).

Here's a 3D printed case to use AAA batteries with the ST motion sensor (now for the multipurpose sensor too!)

Apologies for not giving an update sooner. Real-life™ events are limiting the time I can spend on this sort of hobby. Nonetheless I’ve had the redesigned sensor housing for the multipurpose sensor ready for quite a while, but I never got around to actually upload it to Thingieverse until today. So here it’s, enjoy it: I’m now running all my ST sensors on AAA batteries. So far so good, but it’s only been a couple of months, so it’s too early to give some battery life stats. The new firmwares pushed to these sensors on September 2018 however do make them report the battery level differently, fluctuating a lot more. So it’s normal if the sensors report 100% battery for only a few days and then start going 80%, 60%, back to 80%, etc. This is what I’ve been seeing at least. I’ve also had a s…

You’ll see that thread I started with a 3D printed case for the v2 Motion Sensor. It might be possible to use two AAA for any device that uses a CR2450.

(and the 3D printed case turned out to be a disaster – I seriously recommend an external battery pack next to the sensor)