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Wireless Portable Bluetooth Speaker Batteries

subtel® - UK battery specialists since 2004

subtel® has been a trusted specialist for all types of batteries across Europe and the UK since 2004, offering the best, highest quality rechargeable, replacement Bluetooth speaker batteries, wireless speaker batteries and portable speaker batteries for a huge variety of speaker models and brands - for high-quality, high-capacity, long-life and reliable replacement speaker batteries at affordable prices.

If your original speaker batteries are losing their charge or no longer functioning like they used to, subtel® will have the perfect, 100% compatible battery replacement for you.

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A huge selection of replacement Bluetooth speaker batteries

subtel® sells a large selection of universal rechargeable Bluetooth speaker battery replacements for all leading types, brands and models.

These include replacement JBL Xtreme, Flip and Charge batteries, including JBL Charge 3 battery replacements, Toniebox batteries, Bose batteries, including Bose Soundlink Mini battery replacements, Beats Pill batteries, Bang & Olufsen, Logitech and many more.

Certified safety and proven quality

All subtel® and CELLONIC® batteries use the highest-quality cells: E & ROHS certified, Grade A battery cells with short-circuit, overheating and overvoltage protection that have been tested and certified for optimum capacity, reliability and safety – all before installation.

3-Year Manufacturer’s Warranty

Our premium, longlife replacement batteries for certified safety and high-quality standards. Because of this, we offer a 36-month guarantee on all of our batteries.

Replace your battery, not your speakers

Is your original speaker battery no longer holding its charge? Don’t throw away the whole device - simply replace its battery.

By exchanging your portable speaker’s battery pack instead of buying a new one, you’ll save money over the long-term whilst also helping to reduce environmental waste. You’ll also be able to give your favourite speakers a second life - good as new for years to come.

The modern replacement speaker battery packs from subtel®’s brand, CELLONIC®, can also be higher-capacity, more powerful and with a longer lifespan than even the original batteries that came with your speaker - for more music and longer breaks between charging.

It’s often very simple to replace a speaker battery yourself - all you need is a compatible replacement battery pack, a few good tools and an online tutorial or YouTube video.

What should you look for in a replacement speaker battery?

There are many battery brands and types on the market. But, how do you find the correct replacement battery for your wireless Bluetooth speaker?

  1. Compatibility. You want to find a battery that 100% fits your device. Preferably one that was designed specifically as a replacement battery for your speaker type. To find out if a battery is a match for your device, look at the model/serial number on your battery or device and find a replacement that is compatible with it.

    All of the speaker batteries for sale on our website come with a compatibilities list to ensure you always find the 100% compatible battery for your device.

  2. Correct voltage. Ensure whatever replacement battery you purchase has the same voltage as your original battery. Small differences are acceptable - deviations of 0.1V-0.2V, for example - but anything above or below that could potentially damage your speakers.

  3. Correct cell type. Speaker batteries often use either lithium-ion batteries (Li-ion) or nickel metal hydride batteries (NiMH). If your original battery used Li-ion cell technology, it’s advisable that you choose a replacement which uses the same cell type and vice-versa.

  4. Capacity. The capacity of a battery, indicated in mAh (milliampere hours) or Ah (ampere hours), represents how much charge that battery can store and provide. Essentially, its battery life. The higher the mAh/Ah, the higher the capacity and theoretically the longer you can use the speakers between charges.

    Modern replacement battery packs are available that have a higher mAh/Ah than even your original, branded battery - meaning even longer battery life.

    CELLONIC® produces a wide range of long-life, high-capacity replacement mobile speaker batteries which can even out-perform the lifespan of the batteries which originally came with your speakers.

What tools do you need to replace a portable speaker battery?

  1. Mini screwdrivers. Speakers are held together using tiny screws, so having a handful of mini screwdrivers to hand will make this job easy.

  2. Spudgers and pry tools. You might need a thin, plastic prying tool to safely open the speaker up and to help you to disconnect wires and lift out the old battery.

  3. A soldering iron. Whilst many replacement batteries come with a simple plug to connect it onto the speaker’s circuit board, others may not. In these cases, you’ll have to solder the red (positive) and black (negative) wires onto the circuit board yourself.

  4. Double-sided tape. To help the new battery sit comfortably within the speaker, you might wish to use double-sided tape to hold it in place.

Reliable power when you need it

When looking for replacement wireless speaker batteries, choose a brand you can trust.

subtel®’s CELLONIC® brand of designed-in-Germany battery cells use the best materials and technology to create high-end, heavy-duty, high-capacity, reliable and long-life batteries for many leading speaker brands and models.

All speaker battery packs ordered from subtel® are shipped within the UK from the day your purchase is made and come with a 3-year manufacturer’s warranty.

If for whatever reason you’re unsatisfied with the quality of our batteries, you can return them within 30 days.