Best Bluetooth MP3 Player Batteries of 2025

The Fayerkar JBL Flip 5 Battery offers a remarkable upgrade with its 3.7V 5200mAh capacity, providing you with a longer runtime than the original battery. This means you can enjoy your music without frequent interruptions. Designed to perfectly fit the JBL Flip 5, installation is straightforward, ensuring you can get back to enjoying your speaker quickly. With Grade A cells, this battery supports fast charging and minimises power consumption, allowing you to stay powered up with less hassle. Additionally, integrated protection circuits enhance safety and stability during use.

The Bose SoundLink Battery offers excellent compatibility with various Bose models, ensuring you can easily find a replacement for your device. With a robust 11.1 V voltage and a capacity of 2600 mAh, this battery provides sufficient power for extended use. Its high-quality components guarantee durability and reliable performance, allowing you to enjoy up to 500 charge cycles. By understanding usage patterns, you can optimise battery life, making it perfect for both light tasks and intensive activities.

The CELLONIC Bang & Olufsen Battery is designed for your Beoplay H7, H8, and H9 headphones, ensuring seamless compatibility. With a capacity of 650mAh, this lithium-ion rechargeable battery offers long life without capacity loss, allowing you to enjoy your music or calls for extended periods without interruptions. Its CE and ROHS certifications guarantee safety and quality, meaning you can use it worry-free. Plus, with its low self-discharge rate, you won't have to constantly recharge, making it a convenient choice for everyday use.

The Sony Battery Replacement is designed for your wireless headphones, ensuring compatibility with models like WH-1000XM3 and WH-1000XM4. This rechargeable lithium-ion polymer battery prevents overcharging and short circuits, providing peace of mind during use. With a nominal voltage of 3.7V and a capacity of 1200mAh, it delivers reliable performance. You will appreciate the flexibility to connect it to other 3.7-5V devices, making it a versatile option for various electronic products.

The Bose SoundLink Battery is designed for several models, including Soundlink II and III, ensuring compatibility with your devices. It features a premium lithium-ion design, providing a voltage of 11.1V and capacity of 2230mAh. This allows for an impressive usage time of approximately 150 to 210 minutes on a full charge, perfect for extended listening sessions. Additionally, the battery can be recharged up to 500 times, making it a reliable choice for frequent users.

The CELLONIC JBL Flip 4 Battery is a reliable replacement option for your JBL Flip 4 and Flip 4 Special Edition speakers. It is 100% compatible with these models, ensuring a perfect fit. With no memory effect, the lithium cells provide a long lifespan and allow you to enjoy more hours of music without frequent recharges. You can trust the superior quality of this battery, as it undergoes rigorous testing in Germany to meet high standards. Additionally, safety features such as short-circuit protection give you peace of mind while using your speaker.

The Uwayor Onyx Studio Battery is a compatible replacement for the Harman Kardon Onyx Studio 1/2/3/4 Wireless Bluetooth Speakers. With a voltage of 3.7V and a high capacity of 3500mAh, this rechargeable battery offers longer playtime, ensuring you can enjoy your music without frequent interruptions. It fits directly into your speaker's battery slot, making installation straightforward. Crafted from premium class A battery cells, it provides durability and longevity while protecting your device from overcharging and overheating, enhancing its lifespan.

The CELLONIC JBL Flip 3 Battery is a perfect replacement for your JBL Flip 3, ensuring full compatibility with your device. With a robust 3000mAh capacity, it allows you to enjoy uninterrupted music for longer periods, enhancing your listening experience. This battery features lithium cells that prevent memory effect, so you can recharge without losing capacity over time. Furthermore, it comes with CE and ROHS certification, providing peace of mind with built-in safety protections against short circuits and overheating.

The Fuworance Replacement Battery is designed for your Beats Studio 2.0 and 3.0 wireless headphones, providing a reliable 640 mAh capacity. This battery ensures your headphones stay powered for longer, enhancing your listening experience. With multiple protection features, it keeps both your headphones and battery safe while prolonging their lifespan. Thanks to its high-tech manufacturing process, you can trust the quality and performance of each cell. Enjoy uninterrupted music with this efficient replacement battery.

The CELLONIC UE MegaBoom Battery is fully compatible with your Ultimate Ears UE MegaBoom speaker, ensuring seamless performance. With a high capacity of 3400mAh and a voltage of 7.4V, you can enjoy extended listening sessions without worrying about frequent recharges. This battery features lithium cells without memory effect, which means you can charge it repeatedly without losing capacity over time. Certified for quality and safety, it provides peace of mind with built-in protections against short-circuits and overheating, making it a reliable choice for your audio needs.