AG / LR Batteries
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AG / LR Batteries
Need a battery for a watch, kitchen scale, children's book, or small calculator? The VIDEX AG/LR series (Alkaline button cells) provides a long lifespan for low-drain devices.
Advantages of VIDEX button cells:
- Compact power: Precise and consistent voltage delivery throughout their lifespan.
- Secure packaging: Blisters are designed to protect against accidental access by children (swallowing risk).
- Universality: Compatible with most cheap toys, small flashlights, and medical thermometers.
Don't be left without a working watch or kitchen scale at the most crucial moment. Choose reliable button cells at open tools!
Q: What is the difference between alkaline (LR) and silver oxide (SR) coin cell batteries?
Q: What does the "0% Hg" marking on coin cell batteries mean?
Q: Why shouldn't coin cell batteries be stored loosely together in a single box?
Q: How to correctly measure the remaining voltage (V) of a coin cell battery with a multimeter?
Q: Why is it dangerous to mix coin cell batteries from different manufacturers or new and used ones in the same device?
A: LR (Alkaline) batteries use zinc and manganese dioxide (Zn/MnO2) electrochemistry, which provides economical energy output for everyday devices. SR (Silver Oxide) batteries use more expensive silver oxide, guaranteeing a very flat discharge curve throughout the cycle. LR elements are an optimal solution for toys and calculators, where voltage drop at the end of load does not affect the basic function.
Q: What does the "0% Hg" marking on coin cell batteries mean?
A: It means that the toxic heavy metal mercury (Hg) is not used in the production of the element, fully complying with EU RoHS and REACH directives. Historically, mercury was added to stabilize the zinc anode against gas formation, but in VIDEX AG series batteries, it is replaced by advanced metal alloy technology that ensures airtightness without environmental pollution risks.
Q: Why shouldn't coin cell batteries be stored loosely together in a single box?
A: When the positive (flat top) and negative (bottom bump) poles of coin cell batteries touch, a massive short circuit occurs. As a result, rapid battery overheating and complete energy discharge occur within just a couple of hours. Spare elements must always be stored in their original blister packaging, which isolates the contacts.
Q: How to correctly measure the remaining voltage (V) of a coin cell battery with a multimeter?
A: The measurement must be taken under nominal load, because an empty alkaline battery at rest often shows a seemingly full 1.5V. As soon as the element is connected to a device, the real voltage drops rapidly below 1.1V due to internal resistance. Multimeter probes must press firmly against both poles, as fingerprints or oxide film on the battery surface can create false measurement resistance.
Q: Why is it dangerous to mix coin cell batteries from different manufacturers or new and used ones in the same device?
A: Elements of different series or wear levels have different internal resistance and capacity (mAh). In a series circuit (e.g., 3 batteries in a laser pointer), the weakest element will discharge first, and the stronger batteries will attempt to charge it, causing rapid overheating, outgassing, and corrosive electrolyte leakage onto device contacts.
