LR44: Overview,parameter,Main uses,Features,application fields,working principle and alternative models

LR44 Battery Overview:


LR44 is a type of alkaline button cell battery commonly used in small electronic devices due to its compact size and reliable power output.



  • Voltage: Typically 1.5 volts.
  • Chemistry: Alkaline.
  • Size: Small form factor, cylindrical shape.
  • Capacity: Usually low to medium capacity suitable for small devices.
  • DataSheet LR44 PDF

Main Uses:

  • Small Electronics: Watches, calculators, laser pointers, toys, small medical devices.
  • Remote Controls: Used in key fobs, remote controls for electronics, and car alarms.
  • Calculators: Powering handheld calculators and other small electronic devices.
  • Medical Devices: Some medical devices use LR44 batteries for power.


  • Compact Size: Fits easily into small electronic devices.
  • Reliable Power: Provides consistent voltage output for extended periods.
  • Alkaline Chemistry: Offers a good balance of performance and cost.
  • Long Shelf Life: Can be stored for extended periods without significant power loss.

Application Fields:

  • Consumer Electronics: Powers a wide range of small electronic gadgets.
  • Toys: Many electronic toys use LR44 batteries due to their small size.
  • Medical Devices: Certain medical instruments and devices utilize LR44 cells.
  • Measurement Devices: Some small measurement tools may require LR44 batteries.

Working Principle:

  • The LR44 battery relies on the chemical reaction between the alkaline components inside the cell to produce electrical energy.
  • When the battery is connected in a circuit, electrons flow from the negative terminal (anode) to the positive terminal (cathode) through the external load, creating an electrical current.

Alternative Models:

  • AG13: A common alternative to LR44 with similar specifications.
  • A76: Another equivalent battery type to LR44 with the same voltage and size.
  • LR43: Slightly smaller than the LR44, but with similar characteristics.

LR44 batteries serve as reliable power sources for various small electronic devices, offering convenient and consistent power output in a compact form factor. When considering alternatives, options like AG13, A76, and LR43 can often serve as suitable replacements with similar performance characteristics. Compatibility and specifications should be checked before substituting one battery type for another in a device.

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