CR1025 Battery: Specifications, Features, and Applications

What Is a CR1025 Battery?

The designation CR1025 follows the IEC coin cell naming standard, where "CR" refers to a lithium manganese dioxide chemistry, "10" means a 10 mm diameter, and "25" stands for a 2.5 mm thickness. Therefore, the CR1025 is a small and flat coin-type battery with a nominal voltage of 3 volts.

Because of its miniature size and stable output, it's primarily used in small portable and wearable electronics requiring reliable long-term energy with minimal maintenance.

Voltage and Capacity

CR1025 batteries are typically rated as 3-volt batteries with a nominal voltage of lithium button batteries. Its current is 30-35 milliampere hours (mAh), which is not too high for low drain devices. This capacity may not be important for larger batteries, but it is sufficient for devices that are only used occasionally or require minimal energy.

Features & Benefits

Excellent low-temperature performance enhanced by manganese-dioxide positive pole

Discharge temperature characteristics

Capacity vs. load resistance

CR1025 Battery Specifications

Key Features and Benefits

• High energy density and stable voltage throughout discharge.
• Long storage life with extremely low self-discharge (less than 1% per year).
• Leak-resistant construction for safe long-term use.
• Compact, lightweight design ideal for micro devices.
• Excellent reliability across wide temperature ranges.

Applications of CR1025 Battery

The CR1025 battery is used in low-drain, space-sensitive electronics, including:

• Wristwatches and digital timers
• Car key fobs and remote controls
• Fitness trackers and medical wearables
• Small calculators and sensors
• Backup memory for RTC or CMOS chips

CR1025 Equivalent Batteries

Equivalent models may differ by brand but share identical voltage and size. Common alternatives include:

• Panasonic: CR1025
• Duracell: DL1025
• Energizer: ECR1025
• Maxell: CR1025
• Renata: CR1025

CR1025 vs CR1225: What's the Difference?

The CR1225 is a slightly larger lithium coin cell offering higher capacity. Below is a quick comparison:

While the CR1225 lasts longer due to its larger size, it may not fit devices designed strictly for CR1025 cells.

Storage and Handling Tips

• Store in a cool, dry environment away from heat or direct sunlight.
• Keep batteries in their original packaging until use to prevent short circuits.
• Do not recharge or dispose of in fire.
• Recycle used batteries properly following local regulations.

Frequently Asked Questions (FAQ)

1. What battery can replace a CR1025?

You can replace a CR1025 with an ECR1025, DL1025, or any other 3V lithium coin cell of the same 10×2.5 mm size. Always verify physical fit and polarity before replacement.

2. Is CR1025 rechargeable?

No. The CR1025 is a non-rechargeable lithium coin cell. Using a charger can cause leakage or explosion. For rechargeable options, look for "LIR1025" lithium-ion types.

3. How long does a CR1025 battery last?

Typically, CR1025 batteries last between 2 and 5 years in low-drain devices such as watches, depending on usage and ambient temperature.

4. What devices use a CR1025 battery?

CR1025 batteries are commonly used in wristwatches, calculators, car key fobs, medical sensors, and small digital devices that need compact power sources.

5. What is the difference between CR1025 and CR1220?

Both are 3V lithium coin cells, but CR1220 is 12 mm wide and 2.0 mm thick - larger but thinner than CR1025. They are not interchangeable due to different diameters.