Duracell Procell 9 Volt Batteries, Pack of 12 (Packaging May Vary)

These batteries always work great, but they were shipped in a bag and not a box and the actual battery boxes were destroyed.

Great product and shipping

If you are like me, you must hate buying batteries at the store because:a.) they are grossly overpriced.b.) most stores do not sell them in bulk.c.) most stores have a poor selection of brands available.I needed to replace the 9v batteries in all of my smoke detectors and didn't have much time to shop around, so I stopped in at the local rite-aid store that was closest to my house, and was disappointed to find that the best deal was a 4-pack for about 12$. Begrudgingly, I purchased those, went home, and immediately went online and ordered the Duracell ProCell 12 pack for about $16 which was much more cost effective.It will be hard to beat this price (~1.3$/cell) at almost any store. I paid ~4$/cell at the local drugstore. Sure, maybe walmart or a hardware store may have bulkier options at a better price than a drug store. Even if they were the same price as the Duracell Procell batteries, you still cannot beat the fact that these will ship straight to your door at the click of a button and save you a whole trip, gas and more importantly valuable time.But, are the Duracell Procell a quality set of 9v batteries, as well as cost effective?Quite honestly, this is the first time I've been impressed by a pack of batteries before, but these 9v batteries have many features that show attention to detail and prove that these batteries are of the highest quality.- The batteries are assembled in the USA (Link for Assembled vs. Made in USA http://www.nspa.com/documents/AssembledvsMadeinUSA.pdf)- Expiration Date: Every battery was rated until Mar 2020.- Size: Standard 9v Cell, Fit perfectly inside my Smoke Detectors and dimensions matched the previous energizer 9v cell exactly.- Voltage: No Load - Every battery measured 9.62v on my voltmeter.- Protected terminals: Each cell is equipped with a protective plastic cover to prevent inadvertent discharge and maximize lifetime of the battery.- Satisfaction is Guaranteed: On the side of the box is a guarantee against any material and workmanship defects, and an offer to replace any item that was damaged by these batteries. There is a phone number listed; however, based on the superior quality of this product I expect the company is losing money by hiring an employee to man phones that never ring.Overall, the price, packaging, and quality of these batteries is excellent!I've noticed a few 1 stars due to issues with the quantity received, or 1 or 2 with low capacity. My recommendation if you do happen to have this issue would be to contact the seller, see if they will resolve it, and if its an issue with capacity contact the service phone number on the box.The caps on top of these batteries make it very easy to measure their voltage with a voltmeter when you get them.

I purchased my first box of these batteries in July 2015 and was very happy with them. All 12 were fully charged, and the "use before" date was March 2019, for a shelf life of just under 4 years. The box & batteries were labeled "Assembled in USA", although that text implies the components were manufactured outside the USA. The plastic protective caps had holes in the top which allowed easy testing with a volt meter. The few I have left from that purchase are still charged and usable. I'd have rated that purchase 5 stars.Fast forward 2.5 years to January 2018, and the next box I received (also fulfilled by Amazon) was slightly different. All 12 were fully charged (measured 9.6v each), the date was March 2022, again just under 4 year shelf life. However, the new box & batteries are labeled Made in China, which was a little disappointing. And the plastic caps have no holes, which is a nuisance, as all 12 have to be removed for testing with a voltmeter, than re-installed. Reviews (or answered questions) from only a few months ago were still reporting these as Made (or "Assembled") in USA so the change to China production must have been fairly recent. Time will tell if the new version will have similar lifespan as the previous ones.Detailed photos attached of the recent batteries & package, along with a few side-by-side pictures of the 2015 US vs 2018 China batteries. Also of interest is there does not appear to be size issues as with some other brands of 9V batteries; the ProCells measure 44 x 26 x 16.5 mm (1.75 x 1.02 x 0.65 inch). The dimensions are identical between the 2015 vintage and 2018. After I had some 9V batteries swell and one actually explode in storage (the bottom burst, and one of the internal cells completely spit out the center post!), I've been nervous about buying offshore batteries. The 9V batteries that failed were an off-brand "medical grade", made in China. I had to toss out half of them after a year or two as they started losing charge while on the shelf. I purchased the Procells thinking they were still assembled in USA. Hopefully they will last as long as the previous batch...