What Battery Does the Olympus MJU II Use? All you need to know

Welcome to our in-depth article about the battery used in the Olympus Mju II camera. If you’re here for a quick answer, let’s cut to the chase. The Olympus Mju II uses a CR123A type battery which is readily available and can be conveniently purchased from various online platforms like Amazon, or photography specialty stores. If you’re interested in learning more about the intricacies of the Olympus Mju II battery, including how to properly maintain it and common problems you might face, read on as we dive into the details.

Does the Olympus Mju II need a battery?

Yes, the Olympus Mju II requires a battery to function. Without a battery, the camera will not be able to power up or operate, meaning that you won’t be able to capture any photos or utilize any of the features that the camera offers.

What batteries should you use for the Olympus Mju II?

The Olympus Mju II uses a CR123A type battery. This is a standard size, which means it’s available from a variety of manufacturers. While it’s possible to use any CR123A battery, it’s recommended to use a high-quality option from a reputable brand. High-quality batteries typically provide more reliable performance, ensuring that your camera operates as effectively and efficiently as possible.

Where Can You Get a Battery for the Olympus Mju II?

You can purchase CR123A batteries for your Olympus Mju II from various sources. These include online marketplaces such as Amazon and eBay, photography-specific stores, both online and physical, and general electronics retailers. When purchasing a battery, always ensure that you’re buying from a reputable seller to avoid counterfeit or poor-quality products.

How Long Does the Olympus Mju II Battery Last?

The Mju II in Action

The lifespan of an Olympus Mju II battery can vary depending on various factors including the brand of the battery, the conditions in which the camera is used, and the specific features you frequently use on the camera. On average, a new, high-quality CR123A battery can provide power for approximately 20-30 rolls of film in typical shooting conditions. It’s worth noting that using features like the flash can drain the battery more quickly. Always keep an extra battery on hand to ensure that you never miss a great shot due to a dead battery.

How do I replace the Batteries in my Olympus Mju II?

Replacing the battery in your Olympus Mju II is a straightforward process. Here are the steps you should follow:

  1. First, ensure that your Olympus Mju II is turned off.
  2. Locate the battery compartment door on the side of the camera.
  3. Open the Lens barriere of the Olympus on the front side of the camera, then open the compartment by pushing Open
  4. Carefully remove the old battery. Pay attention to the orientation of the battery as you remove it. This will help you know which way to insert the new battery.
  5. Insert the new battery into the compartment. Make sure that the positive (+) and negative (-) ends align with the indications inside the battery compartment.
  6. Once the new battery is correctly inserted, close the battery compartment door.
From the Original Manual

How do you check the battery status?

Checking the battery status of your Olympus Mju II is a simple and easy task. Here’s how you can do it:

  1. Open the lens barrier until you hear a click. This powers up the camera and activates the LCD display.
  2. Once the LCD display is activated, look for the battery icon. This will give you an indication of the remaining battery power.

The battery status can be interpreted as follows:

  • If the LCD battery icon is full, your battery is in good condition and you can continue using the camera without any issues.
  • If the LCD battery icon is blinking, but the rest of the display symbols are showing normally, it means that the battery is running low. It’s advisable to replace the battery at the next convenient opportunity to prevent any disruption in your photography session.
  • If the battery icon is blinking and the rest of the symbols on the display have disappeared, this indicates that the battery is almost depleted. In this situation, you need to replace the battery immediately to continue using your camera.

Regularly checking your battery status can help you manage your shooting schedule better and ensure that you’re always ready to capture those perfect moments.

Why Does My Olympus Mju II Battery Drain So Quickly? (And Other Problems)

If you find that your Olympus Mju II battery drains more quickly than expected, you’re not alone. There are several common reasons why this might occur, and identifying the cause is the first step towards resolving the issue. Here are a few potential problems and their solutions:

Problem 1: Operating in Cold Conditions

Just like most batteries, the CR123A type used in your Olympus Mju II can drain more quickly in cold conditions. This is due to the nature of the chemical reactions that produce power inside the battery. These reactions slow down in the cold, reducing the battery’s overall output.

Solution: Try to keep your camera and batteries warm whenever you’re shooting in cold conditions. For instance, you could store your camera inside your jacket when you’re not using it, or even carry a spare battery in a warm pocket to swap out as needed.

Problem 2: Frequent Use of Flash

Frequently using the flash on your Olympus Mju II can also drain the battery faster. The flash uses a significant amount of power each time it fires, and this can quickly deplete a battery if used for every shot.

Solution: Limit the use of your flash to only when it’s absolutely necessary. Experimenting with natural light or adjusting the camera settings for low light conditions can often yield better results while saving battery life.

Problem 3: Using an Old or Low-Quality Battery

If you’re using an old battery, or one from a less reputable manufacturer, it may not provide the longevity or reliability of a new, high-quality battery.

Solution: Always use high-quality batteries from trusted brands. They may cost a bit more, but they generally provide better performance and a longer lifespan, making them more cost-effective over time.

Problem 4: Leaving the Camera On

Leaving your Olympus Mju II switched on when you’re not using it can also lead to faster battery drain. While the camera’s power management systems are designed to minimize this, some drain will still occur.

Solution: Make a habit of turning your camera off when you’re not actively using it. This simple practice can extend the life of your battery and ensure it’s ready to go when you need it most.


By Denis Barthel

Here, we’ll address some common questions that come up when dealing with the Olympus Mju II and its battery usage. These questions will provide additional insight into managing and optimizing your camera’s power requirements.

Are there rechargeable batteries compatible with the Olympus Mju II?

The Olympus Mju II is designed to operate with a CR123A type battery, typically a non-rechargeable variant. Although rechargeable RCR123A batteries are available in the market, they often output a higher voltage of 3.7V, as opposed to the 3V provided by a standard CR123A battery.

Such a voltage discrepancy might seem minor but can significantly impact your Olympus Mju II. The camera’s functions, including the light meter and flash, depend on the battery’s voltage for accurate performance. A higher voltage might lead to erroneous measurements and inconsistent operation.

In addition, the increased voltage has the potential to harm the delicate electronics of your camera, which could lead to expensive repairs or even the need for a replacement.

Therefore, while rechargeable batteries may seem like an economically and environmentally friendly choice, their use is not recommended with the Olympus Mju II. Sticking with the standard CR123A batteries ensures your camera operates as intended and prolongs its lifespan.

What happens when the Olympus Mju II runs out of battery?

When the Olympus Mju II runs out of battery, the camera will stop operating. The LCD display will not light up, and you won’t be able to take any photos. To resume using the camera, you will need to replace the dead battery with a new one.

Is it okay to leave the battery in the Olympus Mju II when not in use?

It is generally fine to leave the battery in your Olympus Mju II when not in use, especially if you plan on using it again soon. However, if you’re storing the camera for a long period, it’s best to remove the battery to prevent potential leakage or corrosion that could damage the camera.

Can a wrong battery damage the Olympus Mju II?

Yes, using the wrong type of battery can potentially damage your Olympus Mju II. The camera is designed specifically for CR123A batteries, and using a different type could result in insufficient or excessive power supply, which could harm the camera’s internal circuitry.

Does the Olympus Mju II battery affect the quality of photos?

The battery itself does not directly affect the quality of the photos taken by the Olympus Mju II. However, when the battery power is low, certain functions of the camera, such as the flash, may not perform optimally, which could indirectly affect photo quality.

How to store the Olympus Mju II batteries when not in use?

When not in use, store your CR123A batteries in a cool, dry place away from direct sunlight. Avoid storing batteries in high-temperature environments as this could shorten their lifespan. Also, it’s a good idea to keep them in their original packaging or a protective case to prevent any potential short circuiting or physical damage.