A common question we’re asked is, “Can you replace or change the batteries in solar fairy lights?” It’s a great question, but the answer isn’t as straightforward as a simple “yes” or “no.” It depends entirely on the type of solar fairy lights you’ve purchased. Cheap models often make replacing batteries difficult or even impossible, while premium models are designed with replaceable batteries or battery packs for convenience and longevity.

At Powerbee®, we’ve been at the forefront of solar lighting for over 16 years, and we understand the value of creating user-friendly, long-lasting products. In this blog, we’ll explore the differences between cheap and premium solar fairy lights, the types of batteries used, safety considerations, and how to replace batteries in premium models.

Cheap Solar Fairy Lights: Are Batteries Replaceable?

If you’ve purchased a very cheap set of solar fairy lights (typically under £15), chances are the batteries are soldered or spot-welded directly onto the circuit board. This is the cheapest way for manufacturers to produce these products, and it’s often not possible—or even safe—for the average person to replace the batteries in these units.

Many cheap solar lights are designed to be disposable. The circuit boards in these lights are often overly simplified, with just two wires connecting directly to a welded battery. These batteries may be glued or press-molded into the housing, making it nearly impossible to access or replace them. If your lights fall into this category, they are likely to end up in the bin once the battery fails.

Premium Solar Fairy Lights: Designed for Battery Replacement

In contrast, premium solar fairy lights (typically priced between £20–£70) are designed to allow battery replacement. These models often feature higher-quality components, such as battery packs with connectors, making it simple to unplug the old battery pack and replace it with a new one.

Common connectors used in premium solar lights include JST connectors (e.g., JST-XH or JST-SM) and other low-voltage plug types designed for easy installation. These connectors allow you to safely replace the battery pack without any soldering or technical expertise. In most cases, the battery pack will include two or three batteries encased in a plastic sheath, with a plug on the end for quick connection.

For example, our Powerbee® Endurance Deluxe solar fairy lights include a replaceable battery pack with a connector plug, making it easy for users to swap out the old pack when needed. Simply unscrew the solar panel housing, unplug the old pack, plug in the new one, and screw the panel back together. It’s quick, safe, and hassle-free.

Safety Considerations When Replacing Batteries

If your solar fairy lights do not use a connector plug and require soldering to replace the battery, you must exercise extreme caution. Soldering involves melting metal to create electrical connections, and if done incorrectly, it can pose safety risks. Here are some important tips:

  • Ensure Polarity: Always connect the positive (+) and negative (-) terminals correctly. Reversing the polarity could damage the circuit or cause the battery to overheat.
  • Use the Same Voltage: Replace the battery with one of the same voltage. Using a battery with a different voltage can damage the unit or create a safety hazard.
  • Match the Capacity: The battery’s capacity (measured in milliampere-hours or mAh) should be equal to or greater than the original. A higher capacity will not damage the unit but will allow for longer operation.
  • Take Precautions: Wear safety goggles and gloves when soldering, and work in a well-ventilated area.

If you’re not comfortable with soldering, we recommend seeking professional help or investing in premium solar fairy lights with replaceable battery packs to avoid these risks.

What Kind of Batteries Should You Use?

When replacing the batteries in solar fairy lights, it’s crucial to use the same type of battery that came with the unit. Most solar lights use rechargeable batteries, such as:

  • NiMH (Nickel-Metal Hydride): Commonly used in solar lights due to their reliability and environmental friendliness.
  • Li-ion (Lithium-Ion): Found in higher-end models for their high energy density and long lifespan.
  • LiFePO4 (Lithium Iron Phosphate): A premium option offering excellent performance and stability, often used in advanced solar systems.

Always check the voltage and capacity of the original battery before purchasing a replacement. For example, if the original battery is 1.2V and 1000mAh, the replacement should match these specifications to avoid compatibility issues.

How to Access the Battery in Solar Fairy Lights

In most premium solar fairy lights, the battery is housed within the solar panel unit. To access it, simply unscrew the panel using a small screwdriver. Be careful when opening the housing, as some components inside may be delicate.

At Powerbee®, we ensure that all internal components are securely fastened to prevent parts from falling out during maintenance. Our designs include a dedicated battery compartment that’s easy to access and replace. This thoughtful design ensures that maintenance is straightforward and stress-free.

Conclusion

So, can you replace or change batteries in solar fairy lights? The answer is: it depends. Cheap models often make this impossible, while premium models are designed to allow easy battery replacement. By investing in high-quality solar fairy lights, such as those from Powerbee®, you can enjoy a product that’s built to last, with replaceable batteries and user-friendly maintenance.

Ready to upgrade to solar fairy lights that are built to last? Explore our solar fairy lights collection to find high-quality models with replaceable batteries and long-lasting performance.