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Views: 0 Author: Site Editor Publish Time: 2026-06-23 Origin: Site
The CR1130 is a widely adopted 3V primary lithium manganese dioxide coin cell designed for low-power miniature electronic products. Featuring compact size, flat discharge curve, ultra-low self-discharge and long storage lifespan, it has become a preferred backup and main power source for many small sensors, remote controls, wearable devices and circuit backup modules. Many engineers, purchasing staff and end users still have confusion about its actual size parameters, rated capacity, discharge characteristics, interchangeable alternatives and application selection rules. This article delivers an all-round deep analysis of CR1130 to guide correct battery matching, replacement and bulk procurement.
CR: Stands for lithium manganese dioxide primary battery, nominal open-circuit voltage 3.0V, non-rechargeable chemistry
11: Nominal outer diameter = 11.0 mm
30: Nominal overall thickness = 3.0 mm
表格
Parameter Item |
Technical Value |
|---|---|
Nominal Voltage |
3.0 V |
Typical Capacity |
40 mAh (standard discharge test condition) |
Diameter |
11.0 mm |
Thickness |
3.0 mm |
Battery Chemistry |
Lithium Manganese Dioxide (Li-MnO₂, disposable primary cell) |
Operating Temperature Range |
-20 ℃ ~ +60 ℃ |
Self-Discharge Rate |
Less than 1% per year |
Shelf Life (Room Temperature Sealed Storage) |
Up to 10 years |
Recommended Continuous Discharge Current |
0.1 mA ~ 1 mA |
Cut-off Discharge Voltage |
2.0 V |
Important Note: CR1130 cannot be recharged. Forced charging will cause internal short circuit, swelling, electrolyte leakage or even fire risk.
The marked 40 mAh capacity is tested under standard low-current continuous discharge. Actual usable capacity varies greatly with discharge current, ambient temperature and cut-off voltage setting:
Under microamp low-current load (common for long-term standby equipment): The battery can deliver close to full rated capacity and maintain long service life.
Under occasional pulse large-current loads (such as remote control signal transmission): Instant voltage drop occurs slightly, but overall capacity attenuation is mild, which fits most wireless transmitting devices.
Under sustained high-current discharge far beyond rated range: Effective capacity will drop significantly, accompanied by obvious voltage decline ahead of schedule.
Flat Voltage Discharge Curve
Unlike alkaline coin cells whose voltage gradually declines during use, CR1130 maintains stable output near 3.0V throughout most of its discharge cycle. It avoids abnormal shutdown or signal error of precision circuits triggered by voltage sag.
Excellent Low-Temperature Discharge Property
Lithium manganese system performs far better than alkaline counterparts in cold environments. It retains most available capacity at -20 ℃, suitable for outdoor sensors, vehicle-mounted accessories and cold-region equipment.
Ultra-Long Standby Stability
With annual self-discharge below 1%, the battery retains over 80% residual capacity after ten years sealed storage. It is ideal for devices requiring multi-year battery replacement cycles.
Many manufacturers adopt independent model codes for physically identical CR1130 cells; direct interchange is feasible without mechanical or circuit modification:
Fully compatible equivalents: DL1130, ECR1130, KCR1130 (same dimension, voltage, capacity and discharge property)
Alternative option: BR1130 (lithium carbon monofluoride cell, same size; lower discharge current capability, only suitable for ultra-low-power equipment backup)
CR1116, CR1125 differ in thickness, leading to assembly looseness or installation jamming. Never replace blindly without checking dimensional parameters.
Suitable for miniature wearables, mini electronic timers, small LED indicators, electronic thermometer, compact remote controllers. Choose standard bare CR1130 for regular battery holder assembly.
Car key fob auxiliary power, TPMS backup battery, infrared remote for small home appliances, smart lock standby power. Prioritize high-temperature resistant grade CR1130 for vehicle cabin temperature fluctuation environment.
CMOS backup power for control board, RFID tags, miniature pressure/temperature sensors, electronic counters, medical monitoring wearables. Stable 3V output prevents data loss and circuit malfunction during power outage.
For mass production electronic products, CR1130 with pre-welded positive/negative tabs can be directly soldered onto PCB boards, eliminating battery holders, saving internal space and improving structural stability of finished goods.
For continuous microamp drain: Standard CR1130 is the most cost-effective choice
For extreme long storage requirement: Select high-grade low self-discharge version
For high or low temperature working environment: Confirm wide-temperature specification before purchasing
For pulse frequent transmission loads: Avoid BR-series alternative batteries
No charging operation: CR1130 is primary disposable battery; charging poses severe safety hazards.
Polarity installation check: Flat shell side = positive terminal, gasket side = negative terminal; reversed polarity causes device malfunction.
Storage condition: Store in cool, dry, shaded place; avoid high humidity and direct sunlight to prevent leakage.
Waste disposal: Expired lithium coin cells belong to special electronic waste, please dispose via dedicated battery recycling bins instead of domestic trash.
As a classic small-size 3V lithium manganese power source, CR1130 stands out for stable voltage output, reliable discharge performance and ultra-long shelf life. Comprehending its dimension parameters, capacity characteristics, interchange models and application selection rules helps manufacturers and users avoid mismatched procurement and improper replacement, fully exerting its advantages in low-power miniaturized electronic system design and daily equipment maintenance.
