LR44 battery
Encyclopedia
LR44 is the IEC designation
for an alkaline
1.5 volt button cell
, commonly used in small LED flashlights, digital thermometer
s, calculator
s, caliper
s, watch
es, clock
s, toys
and laser pointer
s.
The battery nomenclature
is defined by the International Electrotechnical Commission
(IEC) in its 60086-3 standard (Primary batteries, part 3 Watch batteries). The first letter L indicates the electrochemical system used; a zinc negative electrode, manganese dioxide depolarizer and positive electrode, and an alkaline electrolyte. The second letter R indicates a round (cylindrical) form. R44 indicates the size is 11.4±0.2 mm diameter and 5.2±0.2 mm height as defined by the IEC standard 60086. Manufacturers have their own part numbers for IEC type LR44 batteries.
The LR44 is also known as LR1154, AG13, A76, 157 (alkaline), SG13, S76, 1166A.
Other types of batteries are or were made in the R44 size. Formerly, mercury batteries were made as button cells. Zinc-air batteries type PR44 require air to work. Silver-oxide batteries type SR44 may provide extra capacity compared to LR44 types but have slightly different voltage characteristics. Performance of a device meant to use a silver-oxide battery may be degraded with substitution of LR44 types.
Battery nomenclature
Standard battery nomenclature describes portable dry cell batteries that are interchangeable in physical dimensions and electrical characteristics between manufacturers. The long history of disposable dry cells means that many different manufacturer-specific and national standards were used to...
for an alkaline
Alkaline battery
Alkaline batteries are a type of primary batteries dependent upon the reaction between zinc and manganese dioxide . A rechargeable alkaline battery allows reuse of specially designed cells....
1.5 volt button cell
Button cell
A watch battery or button cell is a small single cell battery shaped as a squat cylinder typically 5 to 12 mm in diameter and 1 to 6 mm high—like a button on a garment, hence the name. Button cells are used to power small portable electronics devices such as wrist watches, pocket...
, commonly used in small LED flashlights, digital thermometer
Thermometer
Developed during the 16th and 17th centuries, a thermometer is a device that measures temperature or temperature gradient using a variety of different principles. A thermometer has two important elements: the temperature sensor Developed during the 16th and 17th centuries, a thermometer (from the...
s, calculator
Calculator
An electronic calculator is a small, portable, usually inexpensive electronic device used to perform the basic operations of arithmetic. Modern calculators are more portable than most computers, though most PDAs are comparable in size to handheld calculators.The first solid-state electronic...
s, caliper
Caliper
A caliper is a device used to measure the distance between two opposing sides of an object. A caliper can be as simple as a compass with inward or outward-facing points...
s, watch
Watch
A watch is a small timepiece, typically worn either on the wrist or attached on a chain and carried in a pocket, with wristwatches being the most common type of watch used today. They evolved in the 17th century from spring powered clocks, which appeared in the 15th century. The first watches were...
es, clock
Clock
A clock is an instrument used to indicate, keep, and co-ordinate time. The word clock is derived ultimately from the Celtic words clagan and clocca meaning "bell". A silent instrument missing such a mechanism has traditionally been known as a timepiece...
s, toys
Toys
Toys is a 1992 comedy film directed by Barry Levinson and starring Robin Williams, Michael Gambon, Joan Cusack, Robin Wright, LL Cool J, and introducing Jamie Foxx as Baker. The film failed at the box office at the time of its release, despite its impressive cast and lavish filmmaking. Levinson was...
and laser pointer
Laser pointer
A laser pointer or laser pen is a small portable device with a power source and a laser emitting a very narrow coherent low-powered beam of visible light, intended to be used to highlight something of interest by illuminating it with a small bright spot of colored light...
s.
The battery nomenclature
Battery nomenclature
Standard battery nomenclature describes portable dry cell batteries that are interchangeable in physical dimensions and electrical characteristics between manufacturers. The long history of disposable dry cells means that many different manufacturer-specific and national standards were used to...
is defined by the International Electrotechnical Commission
International Electrotechnical Commission
The International Electrotechnical Commission is a non-profit, non-governmental international standards organization that prepares and publishes International Standards for all electrical, electronic and related technologies – collectively known as "electrotechnology"...
(IEC) in its 60086-3 standard (Primary batteries, part 3 Watch batteries). The first letter L indicates the electrochemical system used; a zinc negative electrode, manganese dioxide depolarizer and positive electrode, and an alkaline electrolyte. The second letter R indicates a round (cylindrical) form. R44 indicates the size is 11.4±0.2 mm diameter and 5.2±0.2 mm height as defined by the IEC standard 60086. Manufacturers have their own part numbers for IEC type LR44 batteries.
The LR44 is also known as LR1154, AG13, A76, 157 (alkaline), SG13, S76, 1166A.
Other types of batteries are or were made in the R44 size. Formerly, mercury batteries were made as button cells. Zinc-air batteries type PR44 require air to work. Silver-oxide batteries type SR44 may provide extra capacity compared to LR44 types but have slightly different voltage characteristics. Performance of a device meant to use a silver-oxide battery may be degraded with substitution of LR44 types.
| Alkaline Alkaline battery Alkaline batteries are a type of primary batteries dependent upon the reaction between zinc and manganese dioxide . A rechargeable alkaline battery allows reuse of specially designed cells.... | Silver oxide | Mercuric oxide Mercury battery A mercury battery is a non-rechargeable electrochemical battery, a primary cell. Due to the content of mercury, and the resulting environmental concerns, the sale of mercury batteries is banned in many countries. Both ANSI and IEC have withdrawn standards for mercury batteries... withdrawn† | Zinc–air battery | |
|---|---|---|---|---|
| IEC name | LR1154, LR44 | SR1154, SR44 | MR1154, MR44 | PR44, PR675 |
| ANSI/NEDA name | 1166A | 1107SO | ||
| Typical capacity | 150 mAh MAH The National Security Service was the governmental intelligence organization of Turkey between 1926 and 1965, when it was replaced by the National Intelligence Organization .... |
200 mAh MAH The National Security Service was the governmental intelligence organization of Turkey between 1926 and 1965, when it was replaced by the National Intelligence Organization .... |
600 mAh MAH The National Security Service was the governmental intelligence organization of Turkey between 1926 and 1965, when it was replaced by the National Intelligence Organization .... |
|
| Nominal voltage Voltage Voltage, otherwise known as electrical potential difference or electric tension is the difference in electric potential between two points — or the difference in electric potential energy per unit charge between two points... |
1.50 V | 1.55 V | 1.35 V | 1.35 or 1.40 V |
See also
- Battery recyclingBattery recyclingBattery recycling is a recycling activity that aims to reduce the number of batteries being disposed as municipal solid waste. Batteries contain a number of heavy metals and toxic chemicals, their dumping has raised concern over risks of soil contamination and water pollution.-Battery recycling by...
- List of battery sizes (including SR/LR series batteries)