After the latest firmware update of those devices they last for ~8-9 months. My LeakSmart water sensors (zigbee) used to burn through batteries every 3 months.
Cr2 battery vs cr123a windows#
That said, because they are large and ugly (my opinion) I generally put them on doors / windows that never open or use them was water sensors which generally never detect water. Have 3 year old ecolink sensors that have never had a battery change and work perfect. My ecolink zwave contact sensors and motion sensors seem to last “forever”. Most newer ST devices will only last 6-9 months. Most of my early (2+ years old) ST motion and contact sensors will last 12-13 months. Most of my Lowes Iris contact sensors and motion sensors will last 13-15 months. That said, the devices I’m having issues with are zigbee. I it started after I added about 12 additional zwave wall switches. I’ve been having a lot of issues with certain devices (not all of a type/brand) draining super fast. I have recently also purchased these CR2 rechargeables, but I have yet to use them: Įdit 18/08/16 - The Watson CR2 batteries are actually 3.2V, but they still do the job very well!įirst let me explain that I have ~350 devices, probably 45% zigbee, 45% zwave, 10% wifi. To get 600+mA you need to bump the voltage up! See where I am going with this? You get what you pay for! And technically it is not possible for the battery to hold that much current, at least not in a rechargeable format at 3V. They look almost identical, but the CR123a is slightly taller than the CR2 and they are indeed 3.4-3.7V.Īlso be aware of any CR2 rechargeable battery that claims 600mA or higher capacity. The rechargeable CR2 usage reflects a similar usage pattern.ĭO NOT confuse CR123a batteries with CR2. Here is an odd observation: even when using regular CR2 batteries, some motion devices are just “heavier” on juice usage than others, and they are all of the Iris brand. Heavy traffic areas I get anywhere from 3-5 months out of them. I have 2 motion sensors that do not get a lot of traffic, and they are almost a year in there & still going strong (and yes, I do test the motion periodically). As for durability, they last a long time, long time being dependent on the exact motion sensor it is in.
NO ill effects, and they are exactly 3V, the same as a regular CR2 battery. I have used these CR2 batteries for almost 2 years now:
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