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

They all work great

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 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.

Arrived in a timely fashion and appears to be what was described on the website. That said, the packaging in unmarked individual plastic bags carries no dating for the batteries and leaves doubt as to their useable life.

I don't trust the quality of the product from this vendor. The batteries are not in factory packaging; they come in tiny zip-lock plastic bags. There's no way to tell how old these batteries are. I opened one on receipt, popped it into my device and checked the battery status; it read 57%. Tried another, and it read 100%. Tried a third battery and it was as dead as a stone.

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.

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 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.