LR44 battery

LR44 is the IEC name for a standard type of 1.5 volt button cell alkaline battery, commonly used in laser pointers and watches.

The silver-oxide battery variant SR44 has the same outer dimensions and approximately the same nominal voltage as an LR44 cell, but higher energy density. Although LR44 and SR44 are two distinctly different batteries, in common usage they are usually considered the same battery with only a 'quality' difference.

IEC code

The first letter of an IEC 60083 battery code indicates the electrochemical system used:

* L: (−) zinc electrode – alkali metal hydroxide electrolyte – manganese dioxide electrode (+)
* S: (−) zinc electrode – alkali metal hydroxide electrolyte – silver oxide electrode (+)
* P: (−) zinc electrode – alkali metal hydroxide electrolyte – oxygen electrode (+)

The size-code R44 indicates a round (cylindrical) form, with 11.4±0.2 mm diameter and 5.2±0.2 mm height. [British/European standard BS EN 60086:1998, Primary batteries.]

Characteristics

IEC name: LR44 (manganese dioxide, “alkaline”); SR44 (silver-oxide);
ANSI/NEDA name : 1166A (alkaline), 1107SO (silver-oxide), 1131SOP (silver-oxide);
Other colloquial names: AG13, A76 (alkaline), S76 (silver-oxide);
Typical capacity (mAh):150 (alkaline), 200 (silver-oxide);
Nominal voltage : 1.50 (alkaline); 1.55 (silver-oxide);
Shape: button;
Terminal layout: + bottom/sides, - top;
Dimensions (max): D 11.6 mm, H 5.4 mm;
See also: list of battery sizes

Some brand names

* Common AG13
* AWI S05 / S15
* Beric BLR44
* Bright Star S15
* Bulova 228
* Chateau AG13
* Citizen 280-08 / 280-904
* CNB G13-A
* Duracell 10L14 / 10SL17 / D357 / D76 / MS76 / MS76H
* Energizer 357 / BS07 / BSR44H / A76
* Eveready 357 / 541 / EPX76 / S76E
* Gold Peak GP57 / GP76 / GPA76
* JIS G13F / G13R / GS13
* Kodak KS76
* Lumiscope 2018
* Mallory LR44
* Maxell 313 / LR44 / SR44P / SR07
* MGA MGA-2200
* Nexxtech 357A
* Panasonic SP76 / SR44
* Pentax LX S-76
* Pentax ME Super / SR44 / LR44
* Phillips A76
* Radio Shack 357 / 23-009
* Rayovac RS76 / RS76-2 / RW22 / RW42 / RW82
* Renata 228 / R357
* Seiko SB-F9
* Sony 76-S
* Timex KA / T535B
* Toshiba SR44W / SR44SW
* Varta V13GA / V76HS / V76PX
* Vinnic L1154

References

See also

* Common Battery Sizes (and SR/LR series batteries)
* Battery recycling
* [http://www.batteryholders.org/PR44.pdf Brand Neutral Drawing Of PR44 Zinc battery based on ANSI Specifications]