SR41 and LR41 Battery Equivalents and Replacements

This blog post is about SR41 and LR41 batteries. The SR41 battery is a type of alkaline battery developed for use in medical equipment, such as electronic thermometers. It has since been used extensively in other applications because it can produce high currents at low voltages with high capacities. The sr41 battery was first introduced by the Ray-O-Vac company in 1965 and became an industry-standard thereafter. The SR41 LR41 batteries are commonly confused because they look so similar to one another (and their corresponding numbers are so close). This article will help you find
LR41 SR41 difference, including their use for, how long they last, their voltage and capacity.

What is an SR41 battery?

The SR41 battery is a small round single cell 3-volt button-top alkaline battery. It’s a replacement for the carbon-zinc button cell of the 2% AA size. It has nearly twice the capacity of similarly sized zinc-carbon cells, enabling long life in devices that require exclusive use of alkaline batteries. SR41 equivalent is a watch battery that is specially designed to be used in watches. The SR41 is primarily known for replacing the carbon-zinc/zinc chloride monotransistorbutton cells in applications such as sealed calculators or watches that formerly employed these older types. A common application which now employs SR41s instead of other types is high-quality optical devices; its high capacity means that replacing a defunct sensor with an unused unit shuts down power to reduce

Some people find it difficult to keep up with the latest advances in battery technology. Different chemistries, discharge characteristics and labelling from manufacturers can make shopping for batteries seem like an endless chore. But don’t worry! We’re here to help you sort through these choices of different cells so that your next time at a store isn’t as confusing or daunting!

Here is what we hope will be helpful information when looking into buying some new batteries: There are many types available on the market, including standard alkaline (LR), zinc-carbon (ZR) mercury oxide (MN). You might also want to consider lithium-ion options with high energy densities but require special charging conditions such as temperature ranges and voltage limits.



Zinc Air

Silver Oxide

Nominal Voltage

1 Piece

1.4 V


Cutoff Voltage

1 Piece

1.1 V



Voltage Shown To Drop Over Time

Constant Vltage

Typical Labels

LR736, LR41, AG3

7002ZD, 312, ZA312, PR41, Brown Tab

SR736, SR736PW, SR736SW, SG3, AG3, 192, 384, 392, SR41

Typical Capacity

25-32 (45) mAh

180 mAh

38-45 mAh

The problem with these batteries is not the battery itself, but rather what we do to it. The actual capacity depends on two things: 1) its cutoff voltage and 2) how much current you draw from it before that same cutoff point occurs. So if you’re drawing high currents for long periods of time (say over 50 hours), then your end performance will suffer even though the initial charge might be higher than expected depending on device specifications! The LR41 alkaline 7.9 x 3.6 mm size has been around since 1947 when Duracell’s first industrial production plant opened in Stow, Ohio, under General Motors control – this was where they made their D cells which NASA used as part of Apollo 11.

LR41 batteries are a great way for anyone on the go to have an emergency backup power supply. Keeping one in your pocket or purse is never a bad idea, especially if you’re always using tech gear such as laptops and cell phones, but don’t rely solely on these tiny cells!

The nominal voltage of LR41s ranges from 1.5 volts all the way up to 3 volts per battery – making them perfect for powering just about anything with at least some low amperage draw without overloading it like say, that thing called electricity might do when supplied by its high current counterpart: other sources than what comes out of our wall outlets may not be capable enough so make sure they can support more amps before plugging things into them.

If you are a parent or have children who use digital thermometers, your family is probably familiar with the LR41 battery equivalent. They can be found in most homes and offices for their convenience so that they don’t need to put an ice cube on someone’s forehead when taking their temperature. LR41 equivalent is an alkaline button cell with a diameter of 7.9 mm and a height of 3.6 mm. The LR41 coin battery is also known as 192, 384, 392, LR736, LR41, AG3, and G3 batteries. However, it may not always be easy to know if these battery-powered devices are working properly! If the display reads ‘LO’ or low, this means there isn’t enough power left; make sure you get an LR41 battery replacement as soon as possible because even though they still work below 40°F (4°C), some of its features will no longer function correctly due to extreme cold temperatures which damage electronics.

Silver-oxide 7.9 x 3.6 mm batteries are the most common type of battery you’ll find labelled SR41. Still, other labels like SR736 and SG3 can be found as well on these types of silver oxide cells, which is an alkaline chemistry cell with a nominal voltage that ranges between 1.55 volts to 1.65 volts depending upon its size and capacity; they have more stable output than traditional alkaline cells making them ideal for powering sensitive devices such as watches due to their stability in providing consistent power without fluctuation over time when used properly within their rated parameters.

The SR41 battery is known for powering electronics of all sorts. The cutoff voltage, or the point in which current flow drops off abruptly because a device can no longer function properly on less than 1.2 volts, varies depending on what electronic it’s being used to power and how often that particular device needs more juice due to low power supply at hand – but with most devices running between 1-1.25v before their cutoff voltage kicks in (with watches and toys especially), then this isn’t usually an issue worth worrying about too much as long as you remember not to let them die completely!

The advancements in technology have facilitated the production of single-charge batteries. For example, Energizer 392/384 battery features a nominal voltage of 1.55 volts and 44 mAh typical capacity when being drained using 22 kΩ loads at 21°C down to 1.2 volts; this is an improvement from its previous design that would drain it after about 10 minutes (Energizer SR41 Battery). Silver-oxide SR41 batteries offer longer shelf life than alkaline LR 41batteries – storing them for 6 years or more will not adversely affect their performance while other models usually last only 2 years before they are fully discharged even if unused during storage periods which can result in wastage due to lack of change management practices among businesses.

The innovative world of battery technology is constantly on the move. One such innovation was brought to us by zinc-air batteries, which are much better than their alkaline or silver oxide counterparts with a larger capacity and voltage output but still environmentally friendly, you guessed it! With names like 312, ZA312 Brown Tab PR41 7002ZD etc., these new wonders will be changing our lives in ways we never thought possible.

The modern era has been dominated by all sorts of technological innovations that have helped shape human life for generations now – one such development being zinc-air batteries that outperform both alkaline or silver oxide models when compared side-by-side according to research findings published last year’s end as well as having an amazing 180mA-h capacity and a voltage output of up to 0.98 volts, but what makes them even more valuable is that they are environmentally friendly too.

The Brown Tab zinc-air battery is commonly used as hearing aid batteries, with the tab providing an airtight seal to keep moisture from getting inside. When removing this protective layer, a minute or two of waiting time usually does the trick before you’re ready for use! Zinc-air batteries are different from other types in that they have wet/moist electrolyte and can only work up to several weeks after their tabs come off – so it’s important not to wait too long when on your last few dying breaths!

The humble 312 battery has been around for ages and is a mainstay of our daily lives. One ubiquitous type uses zinc-air batteries with 1.40 to 1.45 volts nominal voltage; these are rechargeable but have the drawback that they’re limited in how many times you can reuse them (usually about 100 cycles). A newer alternative might be NiMH or nickel-metal hydride, which usually come as part of recharger kits for toys like RC cars/planes where one charge lasts 5 hours!) Rechargeables save some money by not needing so much frequent replacement but on average only last 20-25 mAh capacity per day, making it necessary to replace either every morning or afternoon depending upon usage patterns!

On the other hand, rechargeable 312 batteries are available but not very popular. The Silver-Zinc (AgZn) battery features a nominal capacity of 40-45 mAh and can easily last all day long. However, this type of battery has an unusually high voltage – 1.8 volts higher than the zinc-air voltage (1.40 to 1.45 V), significantly higher than NiMH batteries at just 1 volt or silver oxide/zinc chloride cells with their 2V power source. (2) Unless your device was specifically designed for silver zine as well as regular zinc ion chemistries like ZnO or primary cells such as FeCl3(aq) + HNO 3 → NOCl· FeCl + HNO

SR41, LR41, Brown Tab Batteries Security Issues

SR41, LR41, and Brown Tab batteries are free of toxic mercury content. If swallowed by a child or pet, they may cause chemical burns and internal injuries due to electrolytic processes that result from being consumed in large quantities. Most SR41, LR41s come packaged with “Pet/Kid-safe packs”. However, if this happens, contact the nearest emergency center as soon as possible, following their instructions for treatment.

What battery replaces SR41?

There is no single replacement battery for SR41’s use, but you could make a lithium-ion equivalent using 2 CR2032s. SR41 cells are small and cylindrical with an outer diameter of 12.6mm and 8mm height 3.4 mm thickness. The lithium equivalent will be slightly larger at 16 x 17 x 4 mm, but just as good at the charge holding capability as the SR41 while not being as prone to leakage if accidentally left on its side or fully exposed to the air like some non-rechargeable batteries (i.e., old mercury cells). And because these are smaller lithium-ion equivalents, they can’t be charged up more than once fully before their chemical properties begin to wear down, so plan a replacement for the SR41 after about 500 cycles.

Are SR41 and LR41 batteries the same?

This is likely a common question because most people don’t know about the whole spectrum of silver oxide batteries. While they are for the same applications- watches, thermometers, calculators and hearing aids- each type has distinct characteristics that make them better suited for specific uses. SR41 is a general-purpose battery with a nominal voltage of 1.55 volts and 11.4 grams weight per unit of volume. In comparison, LR41 is a more lightweight battery with a higher voltage than its general purpose counterpart (1.5 volts).

LR41s are available in larger sizes meaning they last longer in some devices and come at an increased cost per unit, whereas SR41s typically cost less but have shorter lifetimes on average. It goes without saying that there are some products- like hearing aids and calculators- where the SR41 battery is by far superior.

If you’re asking about the Energizer brand, then yes, they are. The LR41 is an industry designation for a battery type.

Is Energizer 392 the same as LR41?

Energizer and Duracell batteries fit into the 18650 size group. They both have a list of ingredients found on their website to show that these batteries contain heavy metals, lead etc. Even though there are differences in the exact ingredients list, they will both work in your gadget as long as it needs a battery of 18650, which means 3 1860 cells…so lithium-ion chemistries. In other words, if you need batteries for something with a 18650 requirement like my ultra-bright headlamp or something digital…then these brands should be fine since it’s just lithium-ion chemistries.

Popular battery models in this category include SR41, LR41 and PR41. These batteries are readily available at most hardware stores or online shops for a reasonable price. If you’re unsure about which brand and model to buy, always go with popular brands that countless users in many real-life situations have used. Amazon is one of the best places to find affordable deals on these types of products – they often offer free shipping as well!

About the author, Phil Borges

Phil Borges is a battery aficionado. He's written extensively about batteries, and he loves nothing more than discussing the latest innovations in the industry. He has a deep understanding of how batteries work, and he's always on the lookout for new ways to improve their performance.