Panasonic CR2477 3V Lithium Cell Battery (Pack of 5)

I ordered Panasonic batteries because they will continue to produce power at lower temperatures than most other brands. I was able to use these Panasonic batteries in a ruuvi temperature sensor in the freezer, where as standard ruuvi (non-pro) batteries lost power just in the fridge. The batteries arrived in non-panasonic repackaging but the batteries themselves were Panasonic and worked as expected.

These are the perfect replacements for Arlo door sensors. The originals that came with the system lasted about 2.5 years before needing to be replaced. I've had these in now for about 3 weeks, and they still show 100%. If they don't last at least 2 years I will update my review.

Premium batteries delivered my Panasonic CR2477 in oem packaging. The typical Panasonic red and white striped. So when Amazon incorrectly lumps this review with others you'll know. The batteries have as production date of 1/2018 and an expiration of 12-2027., Battery tests at 3.3 volts and appears genuine. The weight is correct at 10.8 grams, another test for authenticity. I only rated battery life at 3 stars because it's too soon to tell. I expect them to last, but I've seen so many fakes , so im very skeptical. To the best of my analytical skills these appear to be genuine, right down to extremely small date stampedcode in the negative post (see photos). I hope this helps others, I'm really sick of getting fake batteries and very happy I found premium batteries to deliver legitimate product.

I bought these for replacements in Sensorpush sensors, so no usage experience yet. This review is based on my initial impressions and will be updated over time. The cells come loose (not carded) and each cell is enclosed in a tiny re-closable plastic bag (zip-lock style). This is a safe way to transport a bunch of loose lithium cells, but it must be extremely labor intensive. I tested one cell with my ZTZ MBT-1 and it came out 100%, which is a good sign. The branding on the cells' face is faint though legible. These could be genuine Panasonic 3V cells, whatever that means today. I'm regarding them as unauthenticated for now. My final product rating will depend on their eventual performance in actual operation.

I received package of 5 on Nov 10, 2018 and they were packed in Panasonic packaging as expected with a 12-2027 expiration date and a PD (production date?) of 01-2018. Won't use them for awhile since I just used last I had and got these for the next replacement cycle of my Smart Things sensor. There are some slightly cheaper alternatives available that I used in the past that lasted 3-4 months in the sensor and I got these for a brand name quality. I'll have to update next year sometime to see if they are actually better but these appear to be genuine Panasonic as advertised.

I ordered Panasonic OEM batteries in a Blister Pack. That is NOT what I got from 'BD Supplies' vendor! Instead got 5 little baggies w batteries. Writing on batt says Panasonic, but looks different from image presented (these include outline of 2 people on it?!?). Seems some vendors are providing what is pictured/claimed... Many are not. Too bad that there is no way to know if you got real items in regards to longevity until after the return date passes! *Update* Logging info document batteries longevity to the day... These lasted right at 3 months in my monitor, compared to previous battery in unit that lasted 1 year. Sucks that Amazon allows these vendors to advertise one thing (packaged Trade Name blister pack), then permits vendors to send out different item (generic batteries in baggies)! *Second battery used 3 months after purchase lasted LESS than 1 DAY!! **Third battery lasted LESS than 2 days!

Good price and fast shipping

I like and have bought Panasonic products for years. As others have noted, perhaps my first indication that these might not live up to my expectations was their arrival in individual plastic bags rather than a blister pack. The first two worked fine, but the next two had a very short lifespan. Will see how the last one goes, but I’m purchasing Toshiba next and getting them from Walmart.

The cells did not last 10 days !!!

it took a little long to reach but work well with my device.