LR43 Battery Equivalent, Replacement, Uses, Specs & Comparison vs LR44

Everything You Need to Know About the LR43 Battery: Equivalent, Specs, Replacements & More

The LR43 battery is a small yet powerful button cell battery widely used in compact electronic devices. Known for its consistent voltage and slim form factor, the LR43 is a staple in watches, calculators, laser pointers, fitness devices, and small toys. In this guide, we'll cover the specs, applications, alternatives, equivalents, and comparisons vs similar batteries like the LR44.

What is an LR43 Battery?

The LR43 is a 1.5V alkaline button cell battery. It belongs to the AG12 / 186 / 301 / 386 series and is also sometimes referred to by the IEC code 1R43. It's compact and round, designed primarily for devices that require short bursts of power.

• Chemical System: Alkaline
• Nominal Voltage: 1.5V
• Common Names: LR43, AG12, 186, L1142, 301A, 386A, 1R43
• Dimensions: 11.6mm diameter × 4.2mm height

Dimensions(mm)

Discharge Characteristics

LR43 Battery Specifications

Feature	Details
Type	Alkaline button cell
Size Code	LR43 / AG12 / 186
Voltage	1.5V
Capacity	~110 mAh
Diameter	11.6 mm
Height	4.2 mm
Weight	~1.9 grams
Chemistry	Alkaline

LR43 Battery Applications

You'll find LR43 batteries in a variety of compact electronics:
Laser pointers
Digital thermometers
Watches
Fitness tracking devices
Calculators
Small electronic toys
Hearing devices
Thanks to its small size and decent capacity, the LR43 is perfect for products that require reliable low-power output.

LR43 Battery Equivalent & Replacement

The LR43 can be replaced with other batteries that have the same size and voltage. Here are the most commonly used equivalents and compatible models:

Equivalent Models	Brands
AG12	Generic Chinese models
186	Maxell, Energizer
301/386	Button cell combos
G12A	Older nomenclature
1R44	Often interchangeable

 Note: While 1R44 and LR43 have similar dimensions, their internal chemistry may vary. Always check device compatibility before substitution.

LR43 vs LR44 – What's the Difference?

Many users ask about the difference between LR43 and LR44. Here's a quick comparison:

Feature	LR43	LR44
Voltage	1.5V	1.5V
Diameter	11.6 mm	11.6 mm
Height	4.2 mm	5.4 mm
Capacity	~110 mAh	~150-170 mAh
Common Use	Thermometers, pens	Watches, toys
Compatibility	Not always	Not always

While they may look similar, the LR44 is thicker and longer-lasting, making it unsuitable for some LR43-specific devices.

LR43 Manufacturer

 The LR43 battery is produced by numerous well-known battery manufacturers worldwide, ensuring consistent quality, voltage stability, and wide availability. These companies adhere to international standards and offer both retail and OEM supply for LR43 button cell batteries.
Here are some leading LR43 battery manufacturers:

• Duracell – A global leader in consumer batteries, Duracell's LR43 models are known for high reliability and long shelf life.
• Energizer – Offers alkaline LR43 batteries with consistent voltage, suitable for medical and household electronics.
• Maxell – A Japanese manufacturer famous for precision electronics batteries, including LR43 under AG12 or 186 code.
• GP Batteries – Based in Hong Kong, GP supplies quality LR43 batteries for both industrial and retail markets.
• Panasonic – Provides stable performance LR43 cells used in thermometers, watches, and small electronics.
• Sony – Their button cell division includes LR43 equivalents, often branded under IEC standards.
• We Power – A newer brand offering affordable LR43 options for OEM bulk orders.
• Camelion – Known for value-for-money LR43 options available through global distribution channels.

These manufacturers ensure interchangeability and compatibility with equivalent codes like AG12, L1142, and 1R43, making them trustworthy sources for personal or commercial battery needs.

LR43 Battery Conversion Table

If you're unsure whether your device supports LR43, use this conversion chart:

If Device Says	You Can Use
AG12	LR43
186	LR43
L1142	LR43
301 / 386	LR43 (short-term)
1R43	LR43

LR43 Batteries FAQs

Q1: Can I replace LR43 with LR44?
A: If your device is tall enough to accommodate the added height.Optional part of a username? LR44 is thicker and not all LR43 compartments will accept it.
Q2: How long is an LR43 battery life?
A: It depends on the device. Generally 6 months to 1 year in normal use.
Q3: Are LR43 batteries rechargeable?
A: No, LR43 batteries are disposable alkaline cells.
Q4: Which is the best LR43 battery brand?
A: Quality ones for me are Duracell, Energizer or Maxell in terms of good performance and long life.
Q5: LR43: Can it be used in fitness device?
A: A lot of fitness trackers and thermometers certainly use LR43 as they are tiny.

The following parts are popular search parts in Terminal Strips and Turret Boards.