Varta 48044 LR43 (4278) 1 5V Alkaline Manganese Button Cell Batteries

Varta 48044 LR43 (4278) 1 5V Alkaline Manganese Button Cell Batteries

Overview of the Varta LR43 Button Cell

The Varta LR43, also known by its catalogue number 4278, is a compact, single‑use button cell designed for low‑power electronic devices. With a nominal voltage of 1.5 V and a capacity ranging from 80 mAh to 120 mAh depending on the specific variant, this battery delivers reliable performance in a miniature form factor.

Key Physical Characteristics

• Diameter: 11.6 mm (1.16 cm)
• Height: 4.2 mm
• Weight: approximately 1.5 g
• Color: Silver metallic finish
• Shape: Standard button cell (Knopfzelle)

Chemical Composition and Technology

The LR43 employs a primary alkaline manganese dioxide (Zn/MnO₂) chemistry, which offers a stable voltage output and low self‑discharge rate. This technology is ideal for devices that require long shelf life and consistent power delivery, such as remote controls, key fobs, and small electronic gadgets.

Electrical Performance

• Nominal Voltage: 1.5 V
• Capacity: 80 mAh (standard) or 120 mAh (high‑capacity variant)
• Internal Resistance: Low, ensuring efficient power delivery under load.
• Operating Temperature Range: Typically –20 °C to +60 °C for alkaline cells.

Typical Applications

The Varta LR43 is engineered for a wide array of low‑power devices. Common uses include:

• Remote controls and wireless key fobs
• Small electronic toys and gadgets
• Medical monitoring equipment (e.g., pulse oximeters)
• Security systems and alarm panels
• Portable audio devices with low current draw

Packaging and Availability

This battery is sold individually in a blister pack, ensuring protection against moisture and mechanical damage. The packaging typically includes:

• Single unit per blister
• Clear labeling with the Varta logo, model number 4278, and voltage specification.
• Compliance markings for safety and environmental standards.

Performance in Real‑World Scenarios

In devices that draw a few milliamperes, the LR43 can sustain operation for several months. For example:

• A key fob consuming 5 mA will run approximately 16 weeks on an 80 mAh battery.
• A low‑power remote control drawing 2 mA can operate for over 40 weeks.

Comparison with Other Button Cells

The LR43’s size and voltage are comparable to the widely used LR44 (CR2032), but it offers a slightly smaller diameter, making it suitable for devices with tighter space constraints. Its alkaline chemistry provides a longer shelf life compared to lithium variants, which may be advantageous in applications where batteries are stored for extended periods before use.

Environmental Considerations

As an alkaline primary cell, the LR43 can be recycled through appropriate battery collection programs. Varta’s manufacturing processes adhere to environmental regulations, ensuring minimal ecological impact during production and disposal.

Conclusion

The Varta 48044 LR43 (4278) is a reliable, high‑quality button cell that delivers consistent performance in compact electronic devices. Its alkaline manganese dioxide chemistry, combined with robust physical dimensions and dependable voltage output, makes it an excellent choice for consumers seeking long‑lasting power solutions in small form factors.

Note: This article focuses exclusively on the product’s specifications, applications, and performance characteristics, without referencing retail information or warranty details.