Choosing between LR1130, 389, and 390 batteries isn’t as simple as matching dimensions. While they may look alike, their chemistry, voltage behavior, and reliability vary greatly. This article simplifies the confusion by comparing key specifications, performance, compatibility, and cost so you can make the smartest, safest choice for your device—whether it’s a toy or a medical instrument.

LR1130, 389, and 390 Battery Specifications

When comparing coin cell batteries like LR1130, 389, and 390, it's easy to assume they are identical due to their identical size—11.6mm in diameter and 3.1mm in thickness. However, despite this physical similarity, their internal chemistry, voltage output, and capacity vary, affecting compatibility and performance.

While the form factor may be consistent, the differences in chemical makeup and output voltage are what determine whether these batteries are truly interchangeable.

Chemistry and Performance: Alkaline vs Silver Oxide

The core difference between LR1130, 389, and 390 lies in their electrochemical composition. LR1130 is an alkaline battery, while 389 and 390 are silver oxide batteries, often referred to as SR batteries.

Alkaline cells like LR1130 are cheaper but offer lower voltage stability and shorter life.

Silver oxide cells (389, 390) maintain consistent voltage over time, making them ideal for sensitive electronics.

Because of their flat discharge characteristics, silver oxide batteries provide stable power, which is especially critical in devices like watches and medical tools.

Compatibility and Cross-Reference

Not all 11.6 × 3.1mm coin cells are created equal. Although LR1130, 389, and 390 share identical dimensions, their chemistry and output stability vary significantly—making them suitable for different kinds of devices.

Let’s look at some real examples:

A Casio analog watch that originally came with a Renata 390 may continue ticking with a 389, but will likely run fast or stop prematurely if fitted with an LR1130.

A Freestyle Lite glucose meter, which recommends SR1130SW, may still turn on with LR1130, but users have reported random shutdowns or inaccurate readings within weeks.

Application Scenarios: Choosing Based on Use Case

Here’s a breakdown of how each battery performs in real-world scenarios:

Using an alkaline cell like LR1130 in place of a silver oxide model can lead to shortened lifespan and potential malfunction.

Cost, Lifespan, and Long-Term Value

Price tags don’t tell the whole story. Here’s what real-world data and user experience show about cost and battery longevity:

Let’s assume you're powering a digital thermometer used once per day:

Using an LR1130 ($0.40 average), you might replace the battery every 4 months, costing $2.40+ over two years.

With a Renata 389 ($1.00 average), it could last 18 months, needing only one replacement and costing just $1.00–$2.00.

We summarize it below:

When longevity, stability, and safety are factored in, silver oxide batteries—especially from reputable brands like Renata or Maxell—almost always win in long-term value.

Environmental Impact and Safety Considerations

While small, coin batteries require proper disposal:

Alkaline (LR1130): Prone to leakage when fully discharged, especially in warm conditions.

Silver oxide (389/390): Contain small amounts of silver; safer and more stable, but require proper recycling.

Disposal Tip: Never toss button cells into household waste. According to the U.S. EPA, coin cell batteries should be recycled at designated collection points.

LR1130 vs 389 vs 390: Which Should You Choose?

Think of alkaline batteries as entry-level runners—fine for warmups. Silver oxide is your marathon athlete: steady, strong, and long-lasting.

Conclusion

Although LR1130, 389, and 390 share the same size, they’re not created equal. LR1130 offers budget convenience but trades off on lifespan and voltage stability. Silver oxide batteries—389 and 390—deliver better performance, longer life, and superior reliability for critical devices.

Key takeaway: Choose based on what your device demands. For watches, glucose meters, and precision tools, stick with 389 or 390. For simple toys or remotes, LR1130 will do the job. Knowing the difference helps you save time, money, and frustration down the line.