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Trust your timepiece to the Swiss battery brand that began in the watch industry and has over 50 years of experience powering them. Renata was founded in Switzerland in 1952 to produce mechanical parts for wrist-watches. By the 1970s, its focus shifted to the research and development of high quality silver-oxide cells to power them. Renata is experienced in the end-to-end battery production process. Its modern, highly automated, production plant incorporates an extensive quality testing system. In addition to watch batteries, Renata manufactures lithium cells for consumer electronics. Research, development, production, and quality testing are grouped at Itingen, Switzerland headquarters. Renata is ISO 9001 and ISO 14001 certified by Bureau Veritas (Switzerland, updated Dec. 2020). 100% mercury-free. Dedicated high and low drain for optimal performance. Sophisticated leak-proof sealing technology and high-capacity retention. Fully transparent freshness dating. Convenient peel-off flap for easy removal of batteries. Pre-perforated packaging to easily separate blister packs. Read more Explore our Renata coin cell line-up. Renata Watch Batteries (SR) Developed in cooperation with The Federation of the Swiss Watch Industry, Renata offers its zero-mercury line of silver-oxide batteries in over 30 sizes. These quality batteries are designed to power watches and electronics requiring compact, long-lasting, low-voltage power. Renata is a Swatch Group company alongside recognized Swiss brands that include Swatch, Tissot, Longines, and Omega. Renata Lithium Batteries (CR) Renata offers 3-volt lithium batteries in a wide range of sizes. Laboratory-tested and approved (Dynamis Batterien, Germany, 2019, #UN_017_51), Renata lithium coin cells meet high quality standards to provide you excellent reliability. Use them to provide memory backup, or to power your medical and fitness appliances, measuring equipment and sensors, security devices, entertainment gadgets, remotes, and more. Renata Hearing Aid Batteries (Zinc-air) Explore our complete line of Renata zinc-air batteries engineered to power both analog and digital hearing assisted devices. Their high constant voltage assures long battery life. Packaged in easy-to-use dial cards, we stock all popular sizes—10, 312, 13, and 675. Renata hearing aid batteries are precision-made in Switzerland and Germany. Read more Renata Size 379 (SR521SW) Renata Size 321 (SR616SW) Renata Size 364 (SR621SW) Renata Size 377 (SR626SW) Renata Size 371 (SR920SW) Renata Size 395 (SR927SW) Voltage 1.55 V 1.55 V 1.55 V 1.55 V 1.55 V 1.55 V Capacity 16 mAh 14.5 mAh 19 mAh 24 mAh 35 mAh 55 mAh Diameter 0.228 in. / 5.8 mm 0.268 in. / 6.8 mm 0.268 in. / 6.8 mm 0.268 in. / 6.8 mm 0.374 in. / 9.5 mm 0.374 in. / 9.5 mm Height 0.083 in. / 2.1 mm 0.065 in. / 1.6 mm 0.083 in. / 2.1 mm 0.102 in. / 2.6 mm 0.081 in. / 2.0 mm 0.106 in. / 2.7 mm IEC Model SR521 SR616 SR621 SR626 SR920 SR927
Precision battery from Renata, Considered to be the best batteries in the world.
Most of the major luxurious Swiss Watch Brands rely on Renata!
High capacity retention on storage (low self-discharge)
Silver Oxide 0% Mercury Batteries
Swiss quality and consistently great performance, battery after battery.
I am very happy for the following reasons: 1. The batteries arrived quickly, well packaged 2. Very reasonable price! 3. Fresh batteries, Expiration date is far in the future 4. Perfect fit and function 5. Seller’s follow up was very professional.Thank you!Swiss made, so my $12 watch now has the same battery as your Rolex!!!The battery was Swiss made with an expiration date in 2024. Product was delivered on time in a few days after ordering via USPS.Through multiple experiences I have found that sellers of button watch batteries on Amazon have learned that Amazon will endorse their products, even though they are entirely deficient. This is my third buy of 9 different models of 1.50-1.55V button batteries for watches. In each case the maximum voltage reading straight out of the package was 1.14V , with the lowest being .75V. These I bought some time ago but had yet to test them, so after the last two lots of 3 different models being deficient I went back and put them on the meters. Same thing, around 1.1V. These readings were done on two different quality voltage meters. One reads digitally to the hundreth, and the other is analog and the needle will either be in the red (replace battery), or in the green (battery is good). I have yet to test one from Amazon that has came close to landing in the green. So what seems like a great deal on the surface, turns out to be a needless waste of time. Yes, usually Amazon will refund your money once they receive the return, but in one case the seller does not accept returns, so I am stuck with the useless batteries.This is the first time I recall having written a negative review on Amazon, in this case a series of them, all concerning these bogus button batteries. Be assured that in the case of these under-powered batteries I will be detailing the offending products each and all. The bottom line is that even though you can buy an Amazon recommended battery for half, or less, than your local battery store...it is a better deal to just pay up and get the battery that actually delivers. Some of the batteries I received have seemingly informative labels affixed to the back of the packaging by the seller, that are actually there to cover up dates that are as much as 3 years old. Other things to look out for are tiny print that says: "Not For Retail Trade". Amazon, are you listening? My biggest gripe is that Amazon gives these bogus batteries "top pick" and "best buy" blurbs prominently placed in the description. A wise old jeweler once told me that when you are in business it is easy to gain new customers every day, sometimes without even much effort. However, he went on, when you lose a customer because of carelessness you will never get them back, and they may steer hundreds more away from you over a lifetime.Batteries arrived quickly or sooner than stated. Excellent value pack of 10 for the money. The Expiry Date is 09/2024 and they are fresh. Well done..watches and clocksThese are excellent batteries at a great price and very fast shipping. I will certainly purchase from this seller in the future.Did what batteries doI bought this card of 10 of these from amazon a few weeks ago when my wife presented me with a handful of watches that she had with flat batteries. I found 4 of them needed this size and none of the cards of mixed sizes I have in my battery drawer had any this size left. When they came I was able to get all four watches working again.Earlier today my beloved handed me another 8 watches that also need new batteries, she said she didn't want to dump them all on me at once last month.I should say at this point my wife and I both collect watches and I am happy to change the batteries on all but the couple of luxury watches I own which I send back to the manufacturer.So from the 8 she gave me this morning I handed 1 straight back to her because it is an automatic and of the other 7, unbelievably 4 of them needed this size. I am happy that I bought a card of 10 now the only thing is, I only have two left so I probably ought to buy another card now!These are a swiss quality brand that I have been led to believe should / could last for up to two years before they need replacing again! Fingers crossed!I would certainly recommend buying this size in bulk if you collect watches like we do!These are the only batteries you should consider using in your watch, forget the pound shop cards of Chinese batteries, they will leak and ruin your watches' movement. I have fitted Renata Swiss batteries in a professional capacity for many years and never had a problem with them, Highly recommended.so far so good, have put one in each of my three watches and they are still working, how long for remains to be seen, if they last half as long as claimed, thats ok, because at that price they are a bargain, compared to four pounds for one battery in the jewellersWas not pleased it was different to the one whole pack that was shown in the pictures as I received 10 separate pieces instead of one whole pack. I asked them why and they replied to me saying that it’s easy to post 10 separate pieces in a small parcel than a pack of 10, which really doesn’t make a difference as you can post a whole pack as I have used these before as CR batteries. I recommend not buying these.Delivered on time and correct product (size). Can't evaluate quality as of duration of the batteries but have no reason to doubt it will be less than the average.