Varta Silver oxide watch battery V379 / SR621SW 1.55 V

The Varta Longlife Power 4920, internationally standardised as LR20 (Mono/D), is the most powerful and long-lasting energy source in the Varta range for devices with very high energy requirements. As the most powerful battery in the Varta Longlife range, it has been specially developed for energy-intensive applications that require maximum runtime and a strong power output. Supplied in the practical pack of 2, it is the ideal choice for anyone looking for a reliable and extremely long-lasting power source for their most demanding devices.Highlights at a glanceMaximum capacity: Developed for devices with very high and long-lasting energy requirements.Powerful energy: Ideal for large torches, radios, toys and other energy-intensive devices.Long shelf life: With 10 years guaranteed shelf life, always ready for use.Secure packaging: The blister pack with "Single Press Out" enables easy removal and convenient storage.Guaranteed quality: Proven Varta product performance, manufactured in Germany.Powerful in a wide range of applicationsThe Varta Longlife Power LR20 is the optimal choice for a wide variety of devices that benefit from its enormous capacity and power. It is particularly suitable for large, battery-operated radios and audio equipment, powerful torches and lanterns, motorised toys, as well as automatic fragrance dispensers. Its ability to deliver consistently high performance over a very long period of time ensures the reliable and long-lasting operation of your devices.Reliable and powerful alkaline technologyThe proven Alkaline Manganese technology (Zn/MnO2) of the Longlife Power series in the D cell size is designed for maximum capacity and performance. It offers superior performance in energy-intensive devices compared to all smaller battery sizes and especially to outdated zinc-carbon cells. The high-quality “Made in Germany” manufacturing also ensures maximum leak protection to keep your valuable devices safe.Sophisticated and user-friendly designVarta batteries stand for top quality and well thought-out solutions. The Longlife Power series is manufactured in Germany and meets the strictest quality standards. The innovative blister packaging with "Single Press Out" function not only simplifies the removal of individual batteries, but also provides a secure and practical storage option for the unused cell. Properties                                                                                                                                                          Model              Varta Longlife Power 4920 / D (pack of 2)               Battery type              Alkaline manganese               Nominal voltage (V)              1.5               Capacity (mAh)              17000               Diameter (mm)              34.2               Height (mm)              61.5               Weight per cell (g)              143.0        FAQs about the Varta Longlife Power LR20 batteryWhat is the difference between "Longlife Power" and the normal "Longlife" series?The "Longlife Power" (formerly High Energy) is designed as a powerful all-rounder for devices with high energy requirements (e.g. large radios, toys). The "Longlife" series is optimised for maximum service life in devices with low and constant energy consumption and would be the more economical choice for these.For which devices is this battery best suited?It is the best choice for devices that require very high and long-lasting power output and where frequent battery changes should be avoided. These include large torches, portable audio devices, motorised toys and automatic dispensers around the house.What does "Single Press Out" mean?The blister pack is designed so that you can press out each battery individually and cleanly without damaging the packaging for the others. This makes removal and safe storage of the remaining cell much easier.Is this battery rechargeable?No, the Varta Longlife Power LR20 is a primary battery and cannot be recharged. Attempting to charge it is dangerous and can cause the battery to leak or burst.How should this battery be disposed of?Batteries must not be disposed of with household waste. Please take used batteries to designated collection points in shops or municipal recycling centres to ensure environmentally sound recycling.

The Varta V386, internationally known as SR43W, is a premium silver oxide button cell, specially developed as a "high drain" version for watches and small appliances with high, short-term energy requirements. As a specialist in special batteries, Varta guarantees the highest quality and reliability. With its stable voltage of 1.55 V and a high capacity of 120 mAh, it delivers the powerful performance that demanding electronic devices require.Highlights at a glancePremium quality: High-quality silver oxide technology for demanding devicesHigh drain optimised: Ideal for devices with high, short-term energy requirementsHigh capacity: Long service life even in devices with high consumptionStable voltage: Constant 1.55 V for reliable function under loadTested quality: High leakage safety and reliability from VartaUniversal precision energy for demanding devicesThe Varta V386 is a universal energy source for a variety of devices that require powerful and reliable performance. It is ideal for wristwatches with energy-hungry additional features such as lighting or alarms. Moreover, it is the perfect choice for calculators, digital calipers, laser pointers, toys and various medical devices.Superior silver oxide technologyThe silver oxide technology of the V386 offers high energy density and a very stable voltage situation. The "High Drain" (W) design is characterised by a lower internal resistance. This allows the battery to deliver higher currents for short periods of time without the voltage dropping significantly, ensuring the reliable function of the connected consumers.Efficiency and safety for your devicesVarta batteries are subject to strict quality controls to ensure consistently high performance and maximum safety. The high-quality workmanship and sealing of the V386 cell provide reliable protection against leakage and thus protect your valuable devices from damage. Trust in tested quality. Characteristics  ModelVarta V386 / SR43W TechnologySilver oxide-zinc (High Drain) SizeSR43W / 386 Nominal voltage (V)1.55 Capacity (mAh)approx. 120 Dimensions (Ø x H, mm)approx. 11.6 x 4.2 Weight (g)approx. 1.9 RechargeableNo  FAQs about the Varta V386 watch batteryWhat does "High Drain" mean?"High drain" means that the battery is designed for devices with high energy requirements. It can briefly supply high currents, as required, for example, for a display illumination, a signal tone or a measurement process. "Low drain" batteries (with the suffix SW) are, on the other hand, optimised for devices with a very low, constant current consumption such as simple clocks.Can I replace an LR43 alkaline battery with this V386?Yes, this is always possible and represents a significant upgrade. The V386 (SR43W) offers a longer service life and a much more stable voltage than an LR43 battery. This is particularly advantageous for measuring instruments and medical equipment to ensure high accuracy.What is the difference between a V386 (SR43W) and a V301 (SR43SW)?Both are high-quality silver oxide batteries of the same size. However, the V386 is designed as a "high drain" version for devices with higher current consumption (e.g. calculators). The V301 (SR43SW) is a "low drain" version specially optimised for the low, constant current requirements of simple wristwatches and provides maximum efficiency there.How should this battery be disposed of?Watch batteries must not be disposed of in household waste. Please take the empty battery to the designated collection points in stores or municipal recycling centres to ensure environmentally sound disposal.

The Varta V389, internationally known as SR1130W, is a premium silver oxide button cell specially developed as a "High Drain" version for watches and small devices with high, short-term energy demands. As a specialist for special batteries, Varta guarantees the highest quality and reliability. With its stable voltage of 1.55 V and a high capacity of 80 mAh, it provides the powerful performance that demanding electronic devices require.Highlights at a glancePremium quality: High-quality silver oxide technology for demanding devicesHigh drain optimised: Ideal for devices with high, short-term energy demandsHigh capacity: Long service life even in devices with high consumptionStable voltage: Constant 1.55 V for reliable function under loadTested quality: High leak-proofness and reliability from VartaUniversal precision energy for demanding devicesThe Varta V389 is a universal energy source for a variety of devices that require powerful and reliable performance. It is ideal for wristwatches with energy-intensive additional functions such as lighting or alarms. In addition, it is the perfect choice for calculators, digital calipers, laser pointers, toys, and various medical devices.Superior silver oxide technologyThe silver oxide technology of the V389 offers a high energy density and a very stable voltage level. The "High Drain" (W) design is characterised by a lower internal resistance. This allows the battery to deliver higher currents for short periods without the voltage dropping significantly, which ensures the reliable operation of the connected consumers.Efficiency and safety for your devicesVarta batteries undergo the strictest quality controls to ensure consistently high performance and maximum safety. The high-quality construction and sealing of the V389 cell provide reliable protection against leakage and thus safeguard your valuable devices from damage. Trust in tested quality. Characteristics  ModelVarta V389 / SR1130W TechnologySilver oxide-zinc (High Drain) SizeSR1130W / 389 Rated voltage (V)1.55 Capacity (mAh)approx. 85 Dimensions (Ø x H, mm)approx. 11.6 x 3.1 Weight (g)approx. 1.5 RechargeableNo  FAQs about the Varta V389 watch batteryWhat does "High Drain" mean?"High Drain" means that the battery is designed for devices with high energy demand. It can deliver high currents for short periods, such as those required for display illumination, a signal tone or a measuring process. "Low Drain" batteries (with the suffix SW) are, on the other hand, optimised for devices with a very low, constant current consumption such as simple watches.Is this battery compatible with the designation SR54W?The Varta 389 corresponds to the internationally standardised IEC designation SR1130W. The designation SR54W is not standardised. Please check the number on your old battery. If it says 389 or SR1130W, this is the correct and suitable replacement.Can I replace an LR1130 (LR54) alkaline battery with this V389?Yes, that is always possible and is a clear upgrade. The V389 (SR1130W) offers a longer service life and a much more stable voltage than an LR1130 battery. This is particularly advantageous in measuring devices and medical equipment to ensure high accuracy.What is the difference between a V389 (SR1130W) and a V390 (SR1130SW)?Both are high-quality silver oxide batteries of the same size. However, the V389 is designed as a "High Drain" version for devices with higher power consumption (e.g. calculators). The V390 (SR1130SW) is a "Low Drain" version specially optimised for the low, constant current demand of simple wristwatches and offers maximum efficiency there.

The Varta V391, internationally known as SR1120W, is a high-performance silver oxide button cell specially designed for watches and other electronic devices with a high, pulse-like energy demand. As a quality product from Varta, this "High Drain" battery offers an extremely reliable and stable power supply for demanding applications. It delivers a constant nominal voltage of 1.55 V and is the ideal choice for modern watches with additional functions.Highlights at a glancePremium quality: High-quality silver oxide technology for demanding devicesHigh drain optimised: Ideal for devices with high, short-term energy demandLong service life: High capacity for this flat sizeStable voltage: Constant 1.55 V for reliable function under loadTested quality: High leakage security and reliability from VartaPowerful in a wide range of applications The Varta V391 button cell is the universal energy supplier for all devices that require a high current for a short time. It is primarily used in digital and analogue wristwatches with additional functions such as illumination, chronograph or alarm signal. It is also very suitable for various medical devices such as blood glucose meters, digital clinical thermometers, as well as calculators and toys that require a powerful and compact energy source.Reliable silver oxide technology (High Drain) The used silver oxide technology stands for a very high energy density and a stable voltage performance. The "High Drain" version (identifiable by the "W" in the IEC designation) is specially designed to deliver high current pulses without the voltage dropping. This ensures all functions of your device are reliably performed at all times. The high-quality workmanship from Varta also guarantees high tightness and protects your devices from damage.Efficiency and security with a system Varta batteries are subjected to strict quality controls to ensure consistently high performance and maximum security. The V391 is designed for a wide temperature range and supplies power reliably even under demanding conditions. The individual packaging protects the cell securely from short circuits and environmental influences until the time of use. Features  ModelVarta V391 / SR1120W Battery typeSilver oxide watch battery Nominal voltage (V)1.55 Capacity (mAh)42 Diameter (mm)11.6 Height (mm)2.1 Weight (g)1.2 Alternative designationsSR1120W, V391, D391, SB-AS/DS, 280-27  FAQs about the Varta V391 / SR1120W button cellWhat do the designations SR1120W or 391 stand for?These are designations for the same battery size. SR1120W is the international IEC standard. Here, "S" stands for silver oxide, "R" for the round shape, "1120" for the dimensions (11.6 mm diameter and 2.1 mm height) and "W" for "High Drain". The number 391 is the specific type number from the manufacturer Varta.What is the difference between a "High Drain" and a "Low Drain" battery? The main difference is in the ability to supply current. "Low Drain" batteries (with the suffix SW, e.g. 392 / SR1120SW) are designed for devices with a very low and constant energy demand, such as simple analogue watches. "High Drain" batteries like the V391 are designed for devices that require a lot of energy for a short time, for example for dial illumination or an alarm tone.Can I use a High Drain battery in a watch intended for Low Drain batteries? Yes, this is technically possible. A High Drain battery (like the V391) will work perfectly in a simple analogue watch that actually requires a Low Drain cell (like the V392). However, it is not recommended the other way round to use a Low Drain battery in a watch with high power requirements as this can lead to functional disturbances.How should this button cell be disposed of? Button cells must not be disposed of in household waste. Please take the empty battery to the designated collection points in stores or to the municipal recycling centres to ensure environmentally friendly disposal.

The Varta V395, internationally known as SR927SW (or SR57SW), is a premium silver oxide button cell that is characterised by its particularly flat design. As a "low drain" battery, it was specially developed for the long-lasting and reliable power supply of classic analogue watches. Its stable voltage of 1.55 V guarantees maximum accuracy and its slim shape makes it the ideal choice for elegant and extra-flat wristwatches.Highlights at a glancePremium quality: High-quality silver oxide technology for maximum reliability.Low drain optimised: Perfect for the low, constant energy requirements of analogue watches.Flat design: Ideal for particularly slim and elegant watch cases.Long service life: High energy density for a service life of several years.Tested quality: High leak resistance to protect your valuable movement.Precision energy for elegant timepiecesThe Varta V395 was specifically designed for use in high-quality analogue watches where a flat and elegant design is paramount. Its cell chemistry is designed to deliver a minimal but constant current over a very long period of time. This not only ensures a long running time, but also the highest precision of the movement, as is expected of quality watches.Reliable silver oxide technology (low drain)The "Low Drain" technology of the V395 is designed for maximum energy efficiency and minimal self-discharge. In contrast to "high drain" batteries, which are designed for high power peaks, the focus here is on maximising service life with a low continuous load. The silver oxide base guarantees an absolutely stable voltage until the end of the life cycle and thus prevents a drop in accuracy.Efficiency and safety with a systemEvery Varta battery undergoes strict quality controls to ensure consistently high performance and maximum safety. The V395 is optimally protected against leakage thanks to its first-class design, which protects your valuable movement from damage. The secure individual packaging also protects the cell from environmental influences and short circuits until it is used. Characteristics  ModelVarta V395 / SR927SW Battery typeSilver oxide watch battery Rated voltage (V)1.55 Capacity (mAh)42 Diameter (mm)9.5 Height (mm)2.7 Weight (g)0.6 Alternative designationsSR927SW, V395, D395, SR57, 280-48  FAQs about the Varta V395 / SR927SW button cellWhat do the designations SR927SW, SR57SW or 395 stand for?These are designations for the same battery size. SR927SW is the most common international IEC standard. "S" stands for silver oxide, "R" for the round shape, "927" for the dimensions (9.5 mm diameter and 2.7 mm height) and "SW" for "Low Drain". SR57SW is an older IEC standard for the same size. The 395 is the specific type number of the manufacturer Varta.What does "Low Drain" mean and for which watches is it suitable?"Low drain" means that the battery is optimised for low, constant power consumption. It is the ideal choice for classic, analogue wristwatches without energy-intensive additional functions. Thanks to its flat design, it is particularly suitable for elegant and slim watch models.Can I use this battery in a watch with a light or stopwatch?This is not recommended. For watches with such functions, a "high drain" battery (with the suffix "W", e.g. Varta V399 / SR927W) is the right choice. The use of a low drain battery in such a watch can lead to malfunctions and greatly shorten the service life of the battery.How should this button cell be disposed of?Button cells must not be disposed of with household waste. Please take the empty battery to the designated collection points in shops or municipal recycling centres to ensure environmentally friendly recycling.

The Varta V396, internationally known as SR726W (or SR59W), is a compact premium silver oxide button cell for miniature applications with high energy requirements. As a "high drain" battery, it was specially developed by Varta to supply high current pulses for short periods. With its stable voltage of 1.55 V, it is the ideal choice for small but powerful electronic devices such as digital clocks, medical instruments and laser pointers.Highlights at a glancePremium quality: High-quality silver oxide technology for maximum reliability.High drain optimised: Ideal for compact devices with high peak current requirements.Compact design: High power output in a small and flat cell.Stable voltage: Constant 1.55 V for the reliable functioning of sensitive electronics.Tested quality: High leak resistance to protect your valuable devices.Powerful in a wide range of miniature applicationsThe Varta V396 is the ideal energy source when high performance is required in the smallest of spaces. It is used in digital wristwatches with additional functions, in medical devices such as digital clinical thermometers, in small pocket calculators, laser pointers and electronic toys. Their ability to cope with high current peaks guarantees that all the features of your devices function perfectly.Reliable silver oxide technology (high drain)The "High Drain" technology of the V396 is designed to meet short-term, high current requirements, such as those arising from a signal tone or LED lighting, without a voltage drop. Compared to cheaper alkaline batteries (such as AG2 or LR726), the silver oxide chemistry offers a stable voltage over the entire service life, which is essential for the precise functioning of electronic and medical devices.Efficiency and safety with a systemEvery Varta battery undergoes strict quality controls to ensure consistently high performance and maximum safety. The V396 is optimally protected against leakage thanks to its high-quality design, thus protecting your devices from damage. The secure individual packaging also prevents short circuits and protects the cell from environmental influences until it is used. Characteristics  ModelVarta V396 / SR726W Battery typeSilver oxide watch battery Rated voltage (V)1.55 Capacity (mAh)30 Diameter (mm)7.9 Height (mm)2.6 Weight (g)0.5 Alternative designationsSR726W, V396, D396, SR726, 280-52  FAQs about the Varta V396 / SR726W button cellWhat do the designations SR726W, SR59W or 396 stand for?These are designations for the same battery size. SR726W is the most common international IEC standard. Here "S" stands for silver oxide, "R" for the round shape, "726" for the dimensions (7.9 mm diameter and 2.6 mm height) and "W" for "High Drain". SR59W is an older standard for the same size. The 396 is the specific type number of the manufacturer Varta.What is the difference to the low drain variant V397 / SR726SW?The difference lies in the application. The V396 (high drain) is designed for devices with short-term high power requirements (e.g. light, sound). The V397 (low drain) is optimised for devices with low, constant power consumption such as simple analogue clocks and would last longer in these. Conversely, a V397 would quickly fail in a high-drain device.Can I use this battery as a replacement for an LR726 or AG2?Yes, the V396 is a high-quality replacement. While LR726 and AG2 are alkaline batteries whose voltage drops, the V396 silver oxide battery delivers a constant voltage. This leads to a more reliable function, especially in electronic measuring devices, and often also to a longer service life.How should this button cell be disposed of?Button cells must not be disposed of with household waste. Please take the empty battery to the designated collection points in shops or municipal recycling centres to ensure environmentally friendly recycling.