Duracell 377 SR626SW SB-AW AG4 1.55v Silver Oxide Watch Battery

Good battery, standard size, works fine.

I selected these silver oxide cells to service several quartz watches where voltage stability and predictable discharge curves are more important than headline capacity. In practical use, the 377 specification delivers consistent 1.5 V output, which is critical for maintaining accuracy in small analogue movements. Installation is straightforward, the dimensions are precise, and contact reliability has been good across multiple case designs. This reflects the majority of user feedback noting proper fit and immediate functionality without intermittent dropouts. From a technical perspective, silver oxide chemistry remains the correct choice for watches due to its flatter discharge profile compared with alkaline alternatives. Longevity has been acceptable in real-world use, though a minority of reports suggest shorter life in high-drain or older movements, which is more likely movement-related than a cell defect. Packaging is sensible for consumers who want quality without excessive surplus. At the current price, it avoids unnecessary jeweller visits while maintaining dependable performance.

Great expiry dates. Already fitted one into a watch and all working ok. What more can you ask

Fits my watchs

Being retired I thought I would search the house for all the watches that had been left in drawers, it's better value for money as opposed to taking them to a watchmaker. My personal preference is Duracell mainly for battery life

Quality and price thanks

Batteries arrived and within 5 minutes they were in my 2 watches. Before installing each battery, I checked them to see if they were fully charged or low on power, but Duracell, true to their word, “ALL BATTERIES ARE FULLY CHARGED” and yes they were. Can’t fault these batteries 10 out of 10 from me

I have always been an avid watch wearer and am very pleased when I find the right one to suit my needs. Of course, with smart watches bouncing onto the market recently which can simply be recharged via Micro-USB cable, or the Apple watch connecting directly to your iPhone, one can say that it has somewhat left the quartz watch redundant. I disagree with this statement, as there are so many varieties, shapes, sizes and functions that battery-powered watches cater for still. I am a healthcare assistant and use Prince London New York fob watches when wearing my uniform at work. Additionally, I have acquired a lot of Casio watches over the years. Wearing such watches, especially for work purposes, enables me to keep an eye on the time during shift hours and throughout the day. Therefore, I need to make sure that my watch batteries are of high calibre and I can rely on them to function for more than just a few weeks at a time. Duracell are probably the leading brand of batteries in the UK; especially in the United States. Having tried a variety of battery sizes in pound shops that advertise 20 for £1.00 and failing miserably in the process, I decided to stick to what the statistics show; i.e. keeping to a reputable brand name that has solid roots in the US since the 1920s for its making of components for military equipment during wartime. Over the years, Duracell has become a household brand name and is instantly recognisable via its very popular advertising mascot with the Duracell bunny. Its logo is a brand that has come to be trusted and has the tagline ‘Long Lasting Power Guaranteed’. For the HCA fob watches that I use, the correct battery to be used is a 1.5V 377 Silver Oxide variety. This is coded as D377/V377/SR66. It is a very small-rounded silver battery so you need to be careful when opening up the packaging not to lose it by dropping or misplacing it. You will find the Duracell logo etched onto it, along with the 377 code to identify it, as well as the +side facing up so you know in which way to insert it. You do need to be very sturdy of hand when changing such batteries of course; however, by simply following your manufacturer’s instructions, it is fairly straight forward to insert correctly. The Duracell D377 battery is not rechargeable and if you have a relatively cheap product in terms of price, it may be easier for you to simply purchase a replacement model when the time comes. However, I am rather fond of my work watches, and I wouldn’t use any other type of brand when having to replace my watch batteries. Duracell now utilise 0% mercury in their D377 watch batteries which makes their use a lot safer for you and the environment. Overall, I would highly recommend this 2xpack above more cheaper variants on the market for their sheer reliability to last longer.

Una marca que destaca por su calidad.

Fungerar helt OK.

Bonne piles tout simplement

Gute Qualität

I destroyed my watch back cover chanching battery's. The watch worked fine itself with the new battery so i would go for the 5 stars instant. Its nice to buy a decent battery instead of a 10 pack you trow away.