What Is LR14 Battery? Basic Knowledge of Size‑C / No.2 Alkaline Battery Introduction

Introduction

When shopping for batteries for flashlights, large toys, portable radios and household gadgets, you may frequently come across the term LR14 battery. Many users are confused about its size, type, voltage and usage scenarios. In fact, LR14 is the international standard name for the widely used Size‑C (2‑cell) alkaline battery. This article explains the basic knowledge of LR14 batteries in simple terms, including definition, naming rules, core parameters, differences from other batteries and common applications, helping you quickly understand this common power source.

1. What Is an LR14 Battery?

LR14 is a non‑rechargeable cylindrical alkaline primary battery defined by the IEC international standard.

• LR: L stands for alkaline chemistry, R means cylindrical shape.

• 14: Indicates the C‑size dimension standard.

In daily life, LR14 is commonly called 2‑size battery or C‑cell battery. It is larger than AA (LR6) and AAA (LR03), smaller than D‑size (LR20) batteries, with moderate volume and higher capacity, suitable for devices that need medium‑high power output.

Unlike rechargeable batteries such as nickel‑metal hydride and lithium‑ion batteries, LR14 is a disposable battery. Once its power is exhausted, it cannot be charged again and must be replaced or recycled properly.

2. Standard Specifications & Basic Parameters of LR14 Battery

Physical Size

• Diameter: 26.2 mm

• Height: 50.0 mm

• Approximate weight: 62 g

Electrical Performance

• Nominal voltage: 1.5 V (stable for most discharge cycles)

• Typical capacity: 4000–5000 mAh under standard discharge

• Operating temperature: −20 °C ~ 60 °C

• Shelf life: 5–10 years under dry and cool storage conditions

Alkaline LR14 features flat discharge curve, stable voltage output, low self‑discharge rate and long standby time, much better than traditional carbon‑zinc R14 batteries.

3. LR14 vs R14: What Is the Difference?

Many people mix up LR14 and R14, but they are totally different battery types:

• R14: Carbon‑zinc battery, low capacity, short service life, unstable voltage, low cost, suitable for low‑power devices with short use time.

• LR14: Alkaline manganese battery, high energy density, long service life, stable power supply, anti‑leakage performance, widely used in household, commercial and industrial equipment.

Simply put, LR14 is the upgraded version of R14, with far better overall performance.

4. Common Application Scenarios of LR14 C‑Size Battery

Due to its moderate size, high capacity and stable 1.5 V voltage, LR14 is widely used in various medium‑power devices:

1. Household electronics: Large‑size flashlights, emergency lanterns, portable radios, boomboxes, hand‑held small appliances.

2. Children’s toys: Big remote‑control cars, electric toy robots, large educational toys.

3. Security & sensing equipment: Wireless doorbells, alarm sensors, portable detectors, multimeters.

4. Outdoor & industrial devices: Outdoor lighting equipment, portable testing instruments, backup power for small monitoring devices.

5. Safe Usage Tips for LR14 Batteries

1. Do not recharge LR14 alkaline batteries; recharging may cause leakage, overheating or safety hazards.

2. Do not mix alkaline LR14 with carbon‑zinc R14 or other types of batteries to avoid abnormal discharge and device damage.

3. Keep batteries in cool and dry environments, avoid high temperature, humidity and direct sunlight.

4. Dispose of used batteries through formal recycling channels instead of regular household waste.

Conclusion

To sum up, the LR14 battery is the standard international name for the C‑size / No.2 alkaline battery. With stable voltage, high capacity and long shelf life, it is a reliable disposable power supply for many medium‑power portable devices. Mastering its basic knowledge helps users select the right battery type and use it safely and reasonably in daily life.