AG3 / LR41 Batteries
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AG3 and LR41 batteries provide reliable 1.5V power to microelectronics.
AG3 (LR41) is an extremely widely used 1.5V microbattery format that combines 41mAh capacity with a compact design. These batteries often serve as the primary power source in laser pens, small electronic toys, and medical thermometers. Thanks to the hermetic steel protective capsule, the batteries are protected from internal chemical leaks under extreme temperature conditions. Stable alkaline discharge guarantees continuous operation of equipment throughout the battery life cycle.
Physical and technical advantages:
- 41mAh capacity: Optimal energy amount in the LR41 battery category.
- 3.6 mm height: Universal standard for measuring instrument niches.
- Stable voltage: Ensures precise calibration of digital indicators.
Choosing button cells with an Alkaline formula significantly reduces equipment calibration errors, guaranteeing flawless diagnostics. On the other hand, for systems with 2.6 mm niche limitations, safely switch to the reliable AG2 / LR726 Batteries. Safety standards require the use of only certified and tested elements in the equipment. Properly selected components that meet technical specifications significantly extend the operating cycle of the hardware in extreme working conditions. Careful selection of materials and engineering during the manufacturing process ensure maximum reliability and safety in all technical application scenarios. This analytical approach is fundamental to today's demanding industrial needs, where there is no room for error and where energy efficiency is always a primary requirement for any reliable system. This allows for significant resource savings in the long run, while maintaining quality at the highest level.
Q: What are the parameters of the AG3 / LR41 battery and its primary niche in the medical industry?
Q: Why do digital thermometers fail to operate accurately when the voltage of the AG3 (LR41) battery begins to drop?
Q: How do AG3 batteries work in multi-element LED booklights?
Q: Is it permissible to put the thinner AG2 (LR726) into an AG3 (LR41) thermometer socket in an emergency?
Q: How should spare AG3 batteries be stored to guarantee their effectiveness at the beginning of operation?
A: The AG3 (known as 392A) battery has a diameter of 7.9 mm and a thickness of 3.6 mm, generating approximately 30 mAh capacity at 1.5V voltage. This size has become the industry standard for pediatric and adult digital medical underarm and oral thermometers (to power LCD displays).
Q: Why do digital thermometers fail to operate accurately when the voltage of the AG3 (LR41) battery begins to drop?
A: Thermometer operation is based on an analog-to-digital converter (ADC) that reads the temperature resistance signal. If the voltage of the VIDEX LR41 battery drops below 1.25V due to discharge, the internal reference voltage becomes unstable and the device may show erroneous (usually lower) body temperature data, therefore the element must be replaced when the Low-Battery icon appears.
Q: How do AG3 batteries work in multi-element LED booklights?
A: To operate a white LED diode, which has a working voltage of about 3.0V, 2 or 3 AG3 elements are connected in series in booklights (forming 3.0V–4.5V). Alkaline AG3 elements maintain 30 mAh capacity, but the LED diode discharges it gradually, meaning the light slowly becomes dimmer, signaling imminent replacement without sudden shut-off.
Q: Is it permissible to put the thinner AG2 (LR726) into an AG3 (LR41) thermometer socket in an emergency?
A: Although both have a 7.9 mm diameter, the AG2 is 1 mm thinner (2.6 mm). Inserting a thinner element does not achieve the necessary spring contact pressure, which in a thermometer causes temporary circuit breaks — the device will reset and the measurement must be started again.
Q: How should spare AG3 batteries be stored to guarantee their effectiveness at the beginning of operation?
A: Spare LR41 elements should be stored in their original sealed blister packaging at room temperature (15-20°C). Refrigerated storage is dangerous for alkaline elements because, upon taking them into warmth, condensation can short-circuit the battery contacts before it is inserted into the thermometer.
