AG9 / LR936

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AG9 / LR936

A small battery, but massive importance to performance. The VIDEX AG9 / LR936 alkaline cell is specially designed for wristwatches and laser pointers, guaranteeing continuous power in low-drain devices.


Why VIDEX button batteries are a smart purchase:

  • Pazīstama arī kā (analogi): LR936, 394, SR936SW.
  • High price-to-quality (TCO) ratio compared to expensive premium brands.
  • Excellent resistance to oxidation, protecting device contacts from rust.
  • Precise dimensions ensuring a perfect and snug fit with no wobble.

Never run out of power at the worst possible moment. Order at opentools.lv today!



Q: What are the IEC parameters and specific application area of an AG9 / LR936 battery?

A: The AG9 battery has a diameter of 9.5 mm and a thickness of 3.6 mm, providing approximately 45 mAh energy capacity at 1.5V voltage. This specific size is designed for compact tactical and measuring instrument sub-units, where an optimal balance of diameter and thickness is important.


Q: Why are LR936 batteries frequently used in firearm laser sights and tactical indicators?

A: Tactical lasers require a compact power socket capable of withstanding the mechanical shock of a gunshot recoil. The reinforced steel housing of VIDEX LR936 batteries protects against internal electrode deformation, ensuring stable power to the aiming laser diode.


Q: How do chronographs and precision timer mechanisms behave when an AG9 battery discharges?

A: The alkaline electrochemistry discharge curve is gradual, so when the voltage drops below 1.2V, the digital chronograph display digits become lighter or the time-counting microchip starts lagging, indicating the need for timely element replacement.


Q: Can an AG9 (LR936) be replaced with similar diameter AG8 (LR1120) or AG7 (LR926) batteries?

A: Replacement is not possible due to the different thickness (3.6 mm versus 2.05 mm or 2.6 mm). A battery that is too thick will prevent closing the housing cover, while a battery that is too thin will not form an electrical contact with the spring terminals.


Q: Why is storage humidity dangerous to the thin film insulation around the AG9 battery housing?

A: The positive and negative poles of alkaline batteries are separated by a micron-thick nylon seal. In high humidity, condensation forms on the metal surface, which accelerates galvanic corrosion of the micro-coating, therefore spare batteries should be stored in a dry environment below 65% relative humidity.