https://community.arlo.com/t5/Arlo/What-s-the-best-way-to-test-CR123-batteries-outside-of-original/m-p/1919150#M88391 <P>"It depends." (TM)</P> <P>&nbsp;</P> <P>A battery tester that simply shows a non-calibrated display of the battery condition may tell they're "good" but use of a voltmeter to actually measure what the batteries can supply would be a better choice. As I recall (it's been a while) non-rechargeable CR123 batteries should be ~3.2v when fresh. The Arlo cameras will stop working when the voltage reaches ~2.75v due to the load the cameras exert on them, lowering the actual in-circuit voltage even more. The batteries will work in other devices (flashlights, etc.) that don't load the batteries as much and may have a lower voltage threshold.</P> <P>&nbsp;</P> <P>Use a voltmeter to test and get an accurate reading rather than a nondescript "Good"/"Bad" reading.</P> Thu, 29 Jun 2023 12:46:41 GMT jguerdat 2023-06-29T12:46:41Z https://community.arlo.com/t5/Arlo/What-s-the-best-way-to-test-CR123-batteries-outside-of-original/m-p/1919116#M88389 <P>None of the battery testers I used seem to be accurate. They keep saying each battery is still good! Arlo cameras disagree!</P><P>&nbsp;</P><P>Thank you for reading and hopefully answering soon. <span class="lia-unicode-emoji" title=":slightly_smiling_face:">🙂</span></P> Thu, 29 Jun 2023 01:23:28 GMT https://community.arlo.com/t5/Arlo/What-s-the-best-way-to-test-CR123-batteries-outside-of-original/m-p/1919116#M88389 ant 2023-06-29T01:23:28Z https://community.arlo.com/t5/Arlo/What-s-the-best-way-to-test-CR123-batteries-outside-of-original/m-p/1919150#M88391 <P>"It depends." (TM)</P> <P>&nbsp;</P> <P>A battery tester that simply shows a non-calibrated display of the battery condition may tell they're "good" but use of a voltmeter to actually measure what the batteries can supply would be a better choice. As I recall (it's been a while) non-rechargeable CR123 batteries should be ~3.2v when fresh. The Arlo cameras will stop working when the voltage reaches ~2.75v due to the load the cameras exert on them, lowering the actual in-circuit voltage even more. The batteries will work in other devices (flashlights, etc.) that don't load the batteries as much and may have a lower voltage threshold.</P> <P>&nbsp;</P> <P>Use a voltmeter to test and get an accurate reading rather than a nondescript "Good"/"Bad" reading.</P> Thu, 29 Jun 2023 12:46:41 GMT https://community.arlo.com/t5/Arlo/What-s-the-best-way-to-test-CR123-batteries-outside-of-original/m-p/1919150#M88391 jguerdat 2023-06-29T12:46:41Z