SR48, AG5/SG5, LR754, SR754, Orange Tab, Size 13, 193/309/393 Battery Equivalents and Replacements
SR48, AG5/SG5, LR754, SR754, Orange Tab/13, 193/309/393, etc., are small, button coin cell batteries often used in watches, toys, small LED flashlights, wearable electronics, remote controls, hearing aids, and similar.
SR48, AG5/SG5, LR754, SR754, Orange Tab/13, 193/309/393 batteries are available in several chemistries and are often labeled differently by their manufacturers, leading to some confusion among their users.
Updated: January 26, 2023.
LR754, AG5, 393 Batteries Features and Specifications
SR48, AG5/SG5, LR754, SR754, Orange Tab/13, 193/309/393 batteries physical dimensions are diameter of 7.9 mm (~0.311 inches) and height of 5.4 mm (0.213 inches) and may be found as alkaline, silver-oxide and zinc-air batteries.
Their common features are given in the following chart:
|Nominal Voltage||1.5V||1.55V||1.4 - 1.45V|
|Notes||Voltage drops over time||Very constant output voltage||Slightly lower voltage, large capacity;
hearing aid batteries
|Typical Labels||LR754, LR48, L750, AG5, 193||SR754, SR754W, SR754SW, SR754PW, SR48, 309, 393, SG5||13, Orange Tab, ZA13, PR48, 7000ZD|
|Typical Capacity||45-55 mAh||70-80 mAh||280-300 mAh|
The actual capacity of these batteries depends on the cutoff voltage of the device, but also it depends on the temperature, battery's age, and drain current - the stronger the current, the lower end capacity will be.
Note regarding naming conventions: some manufacturers use their own labels; for example, Varta's 393 battery is labeled as a 'V393' battery, and it is a standard silver-oxide 393 battery - it may replace other silver-oxide 393 batteries and may be replaced by other silver-oxide 393 batteries.
Alkaline LR48, L750, LR754, 193, or AG5 batteries are cheap and reliable button/coin cell batteries featuring a nominal capacity of 50-55 mAh.
Since their actual voltage drops during use, their capacity depends on the cut-off voltage of the used device.
Some digital watches, wearable electronics, and similar devices are designed to be powered by silver-oxide batteries. Since they signal low-battery condition at a 1.2V battery, alkaline LR754 batteries are not recommended for such devices.
But, for general use in toys, small flashlights, and similar applications, alkaline LR48, L750, LR754, or AG5 batteries are a good choice.
Silver-oxide SR754, SR754W, SR754SW, SR754PW, SR48, 309, 393, or SG5 batteries have slightly higher nominal voltage when compared with alkaline batteries (1.55 V vs. 1.5 V), but unlike alkaline batteries, their output voltage remains relatively constant during use.
Like other silver-oxide batteries, these batteries also feature a cut-off voltage of around 1.2V.
Silver-oxide SR754SW/393/SG5 batteries also have a larger capacity than their alkaline counterparts - 50-55 mAh vs. 70-80 mAh.
Since sensitive devices may have reliability issues when being powered by alkaline batteries, silver-oxide batteries should be the preferred choice for powering watches, calculators, remote controls, and other similar small electronic devices, despite their slightly higher price - the price difference is practically negligible since both alkaline and silver-oxide 7.9 x 5.4 mm batteries are rather cheap.
However, note that "309" (SR754W) batteries are considered "low-discharge" silver-oxide 7.9x5.4mm batteries, while "393" (SR754SW) batteries are considered "high-discharge" 7.9x5.4mm batteries.
But, thanks to advances in chemistry and in technology in general, most battery brands offer multi-drain SR48 batteries.
Zinc-air Size 13, Orange Tab, ZA13, PR48, and 7000ZD batteries have slightly lower nominal voltage (1.4-1.45 V vs. 1.5 V vs. 1.55 V) than alkaline and silver-oxide batteries, but they have much larger capacity of ~280-300 mAh.
Zinc-air batteries use oxygen from the air and wet electrolyte.
Prior to use, the orange tab is removed, and the air enters the battery.
After a few minutes, the battery can power the required device - usually Behind The Ear (BTE) or In The Ear (ITE) hearing aid devices.
However, when the wet electrolyte dries out, these batteries are dead even if they haven't been discharged during use.
Safety Issues: Like other similar small button/coin cell batteries, LR48/SR48/393/AG5/SG5/13/Orange Tab batteries are small, shiny, and may be attractive to kids and pets.
Modern batteries, regardless of the chemistry, contain practically no mercury/cadmium or similar heavy metal or similar pollutant.
However, when such small batteries are swallowed, they may cause electrolytic reactions in human/animal bodies that may be very harmful - if something like that happens, call the doctor/vet (or some similar emergency service) immediately and follow their instructions.
LR754, AG5, 393, S48, SR754, Orange Tab Batteries Cross-Reference Chart
The following chart lists some of the most popular 7.9x5.4mm button/coin cell batteries with their most important features and specifications.
|Capacity||Operating Temperature||Annual Self-Discharge Rate||Discharge Current|
|Duracell D309/D393||80 mAh, 15kΩ down to 1.2V @20°C||0°C to +60°C||≤10% @20°C||103.3 μA, over 15kΩ @20°C|
|Duracell Size 13 Orange Tab||300 mAh, 1.5kΩ down to 1.1V @21°C, 50%RH||0°C to +50°C||4 years unactivated @21°C||-|
|Energizer 193 (Obsolete)||53 mAh, 15kΩ down to 0.9V @21°||-||-||83 μA, over 15kΩ @21°C & 1.25V|
|Energizer 309 (Obsolete)||70 mAh, 13kΩ down to 1.2V @21°C||-||~2% @20°C||119 μA, over 13kΩ @21°C|
|Energizer 393 (Obsolete)||75 mAh, 10kΩ down to 1.2V @21°C||-||~2% @20°C||155 μA, over 10kΩ @21°C|
|Energizer Size 13 Orange Tab||289 mAh, down to 1.05V @21°C, 12/3mA (IEC-STD)||-||4 years unactivated||-|
|muRata SR48||75 mAh, 10kΩ down to 1.2V @23°C||-10°C to +60°C||-||-|
|Renata 309 SR754W||80 mAh, 20kΩ down to 1.2V @20°C||-10°C to +60°C||≤5% @20°C||78 μA, over 20kΩ @20°C|
|Renata 393 SR754W||80 mAh, 15kΩ down to 1.2V @20°C||-10°C to +60°C||≤10% @20°C||103.3 μA, over 15kΩ @20°C|
|Varta V393 SR48||77 mAh, 13kΩ down to 1.2V @20°C||0°C to +60°C||-||-|
As one can see, the actual capacity of any battery depends on the battery discharge current, temperature, and age.
Zinc-air batteries are good for up to 4 years when not activated, while silver-oxide batteries are good for 2-5 years, model dependent.
Alkaline LR754 batteries usually feature a shelf life of 2-4 years, rarely more.
Long Story Short: If you are looking for a 7.9x5.4 mm button/coin cell battery for an electric/electronic device, silver-oxide batteries of reputable brands are highly recommended - they feature long shelf life, rather constant voltage and higher capacity (compared with similar alkaline batteries).
Hearing aid 7.9x5.4 mm batteries (13, Orange Tab, ZA13, PR48, 7000ZD) provide reliable power for hearing aid devices, and although, if really needed, may be replaced with alkaline/silver-oxide batteries, the capacity difference is simply too large for the alkaline and sliver-oxide batteries to be cost-effective.
Orange Tab batteries from reputable brands feature excellent capacity, easy-to-remove tabs, and stable output voltage.