Comparing Different Button Cell Batteries LR44, AG13, LR1154 and
A button cell resembles a button, thus the name. It’s a single-cell battery often used to power small devices like hearing aids and wristwatches.
Its diameter ranges between five to 25 mm (0.197 to 0.984 inches), while its height dimensions are between 1 and 6 mm (0.039 to 0.236 inches).
The battery has two terminals:
- The positive terminal is composed of stainless steel and lies at the bottom.
- The negative terminal is insulated and forms the top cap.
Button cells are famous for their longevity. They possess a low self-discharge, which allows them to keep their charge for a long time (especially in cases of inactivity).
Today, we’ll explore button cell batteries, their composition, and the different types.
Battery Cell Chemistry
There are four major categories into which cell batteries are grouped:
Alkaline Batteries
Alkaline batteries match other battery types in terms of size. However, they provide less stable voltage and less capacity than their lithium and silver oxide counterparts.
Silver-Oxide Batteries
Silver-oxide batteries are known for their stable discharge. They’re often used in medical instruments and precision devices.
Mercury-Oxide Batteries
Mercury-oxide batteries have stable voltage but are no longer used because of their toxic nature. Incorrect disposal of the battery pollutes the environment.
For example, the United States, through its Mercury Act of 1996, prohibited the use of mercury in favour of mercury-free alkaline batteries.
Zinc-Air Batteries
Zinc-air batteries have the highest capacity compared to others. In addition to the ingredients packed in the cell, these batteries use oxygen from the air as a depolarizer.
They’re termed next-generation batteries, given their potential to hold more energy, their safety mechanisms, and potentially reduced cost per unit.
Battery Chemistry Comparison Chart
IEC 60086-3 is an international standard that defines battery cells using an alphanumeric code format.
The IEC 60086-3-5:2021 particularly provides the requirements, dimensions, designation and methods used to test batteries used for watches.
Package Size
When inspecting a button battery, you may notice a 2-digit code. This represents a typical case size.
A code of 3 or 4 digits speaks for the cell’s height and diameter. In this case, the first 2 digits usually represent the exterior diameter in full millimeters (rounded down). This standard specifies exact diameters with no ambiguity. For example, a cell designated as 9 indicates a diameter of 9.5mm and nothing else.
- SR516 indicates silver, with 5.8 in diameter and 1.6 mm in height.
- CR2025 indicates lithium, with 20mm diameter, 2.5mm height, and 170 mAH.
- LR1154/SR1154 indicates alkaline/silver with a diameter of 11.6 and a height of 5.4. The alternative two-digit code for this is LR44/SR44.
Duracell Hard to Find Battery Kit INCLUDES: 28A, 76A, MX2500 (AAAA), MN21
Duracell 28A 6v batteries work great for: Laser Pointer, Insulin Pumps, Heart Rate Monitor, toys,Watches, Cameras, Calculators, Car Security Alarm, Keyless Car Remotes, Organizers, Computer Equipment (memory backup battery) CMOS, and all other devices that requires this battery size.
- Voltage: 6V
- Amperage: 105mAh
- Chemistry: Alkaline
- Width: 0.51in (13mm)
- Height: 0.98in (25mm)
Duracell 28A Also Known As: 4LR44, A544, PX28A, 476AF, 476A, V4034PX
- Medical devices
- Cameras
- Dog collar
- Invisible fence
- Garage door opener
Duracell 76A 1.5V Alkaline Battery Replacement LR44, A76, PX76A, V136A
Duracell 76A 1.5V Batteries work great for: test11 instruments, calculators, timers, watches, keyless locks, and other small electronic devices.
- Voltage: 1.5V
- Amperage: 110mAh
- Chemistry: Alkaline
- Diameter: 0.47in (12mm)
- Height: 0.19in (5mm)
Duracell 76A Also Known As:LR44, CR44, SR44, 357, SR44W, AG13, G13, A76, A-76, PX76, 675, 1166a, LR44H, V13GA, GP76A, L1154, RW82B, EPX76, SR44SW, 303, SR44, S303, S357, SP303, SR44SW)
- Medical Devices
- Watches
- Toys
- Calculators
- Key Fobs
- Cameras and more
Duracell Ultra AAAA Alkaline Battery 1.5V MX2500 LR61
Also known as: LR03, MN2400, R03P, SUM4, LR3, HP16, AM4, 4003, E92, 824, K3A
- Type: Alkaline
- Voltage: 12V
- Length: 28.9 mm
- Diameter: 10.3 mm
- Terminals: Flat Terminals
Also Known As: 1811A, 23A, 8F10R, 8LR32, 8LR932, A21, A23, BAT012, E23A, EL12, GP23A, K23A, L1028, LRV08, MN21, MN23, MS21, N21, N21, PX32A, PX32AB, PX32B, RV08, RVO8, S21, V23GA, VR22
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