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Item #:
214173353
Replacement Battery Compatible with JBL PartyBox 520 and PartyBox 720, Battery for Boombox 4 Portable Speaker, PN FG6CELL21700G
86% of respondents would recommend this to a friend
Item #:
214173353
XOF 61916
Price Details
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*All items will import from US
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Imported from USA store
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Order now and get it around Saturday, October 17
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Fully decoded, higher capacity provides a longer playtime to your PartyBox 520, PartyBox 720.
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What Stands Out
High Capacity Battery
This 4800mAh battery enhancement ensures longer playtime for your JBL PartyBox 520 and 720, providing uninterrupted party vibes and outdoor enjoyment.
Perfect Compatibility
Designed specifically for JBL PartyBox 520 and 720, this battery replacement guarantees a seamless fit and reliable performance without compromising sound quality.
Easy Installation
User-friendly design allows for quick and hassle-free installation, making it accessible for anyone to replace their JBL speaker battery without technical expertise.
Product Details
| Number of Batteries | 1 Nonstandard Battery batteries required. (included) |
| Brand | Palowextra |
| Model Number | FG6CELL21700G |
| Manufacturer | Palowextra |
| Battery Cell Type | Lithium Ion |
| Battery Capacity | 4800 milliamp_hours |
| Voltage | 21.6 volts |
| Reusability | Rechargeable |
| Unit Count | 1 Count |
| Battery Weight | 500 g |
| Item Dimensions | 2 x 3 x 1 inches (5.1 x 7.6 x 2.5 cm) |
| Antenna Location | MP3 Player |
| Battery Cell Composition | Lithium Ion |
| Recommended Uses For Product | MP3 Player |
Dangerous Goods
To avoid the delay in customs clearance process for Dangerous Goods, the shipment shall be opened at our warehouse facility to check the severity of hazardous components. Please see the list of Dangerous goods here.
Who Should Buy?
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Frequent Outdoor Users
Ideal for those who frequently take their speakers outdoors, needing a reliable and long-lasting battery replacement.
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Party Hosts
Perfect for individuals hosting parties who want continuous music without the worry of battery life.
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Travel Enthusiasts
Great for travelers wanting their portable speaker to last longer during trips without constant charging needs.
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Occasional Users
Users who rarely use their speaker may not find the need to replace the battery at all.
Product Description
Have any Query? Chat with us
Customer Questions & Answers
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Question:
What is the capacity of the Replacement Battery Compatible with JBL PartyBox 520 and PartyBox 720?
Answer: The Replacement Battery for JBL PartyBox 520 and PartyBox 720 has a high capacity that ensures extended playtime for your boombox. This battery allows for optimal performance, enhancing your listening experience whether you are hosting a party or enjoying a day at the beach. With a robust capacity, you can enjoy multiple hours of uninterrupted music, making it an ideal companion for gatherings or outdoor adventures. -
Question:
Is this battery compatible with other JBL models?
Answer: No, this particular replacement battery is specifically designed for the JBL PartyBox 520 and PartyBox 720 models. It's crucial to use compatible parts as non-specific batteries may not fit properly or provide adequate performance. This ensures that you retain the sound quality and battery life your speaker is known for, preventing potential damage that might arise from using incompatible components. -
Question:
How do I install the replacement battery in my JBL PartyBox?
Answer: Installing the replacement battery in your JBL PartyBox is straightforward. Start by unplugging the speaker and locating the battery compartment. Following the manufacturer's instructions, remove the old battery and insert the new one, ensuring that the connectors align correctly. Once installed, close the compartment and recharge the speaker before first use. This process allows you to quickly restore your speaker's power and keep the party going. -
Question:
Can I use my JBL PartyBox while charging the battery?
Answer: Yes, you can use your JBL PartyBox while it is charging the replacement battery. This feature allows for continuous playback during charging, which is especially useful for prolonged use at parties or events. Keep in mind to monitor the device to avoid overheating, as maintaining a good airflow around the speaker ensures reliable performance and longevity of the battery. -
Question:
What is the expected lifespan of this replacement battery?
Answer: The lifespan of the replacement battery varies depending on usage patterns, but it is designed to endure frequent charging cycles and long playing times. Regular maintenance, such as not letting the battery completely drain before charging, can prolong its life. Users often find that with proper care, the battery consistently supports robust playback times, ideal for frequent gatherings or even regular enjoyment at home. -
Question:
Do I need special tools to replace the battery?
Answer: Typically, no special tools are required to replace the battery in your JBL PartyBox. Most users can accomplish the installation using standard tools like a screwdriver. The process is designed to be consumer-friendly, allowing you to easily upcycle your device with minimal fuss. This convenience ensures that you can quickly restore the functionality of your speaker and get back to enjoying your favorite music in no time. -
Question:
Can this battery be used in non-JBL portable speakers?
Answer: This replacement battery is engineered specifically for JBL PartyBox 520 and PartyBox 720, and it is not suitable for use in non-JBL portable speakers due to varying voltage and size specifications. Using the battery in non-compatible devices may lead to performance issues and could potentially damage the device. Sticking to products designed for your speaker model ensures optimal performance and safety. -
Question:
How do I know if my battery needs to be replaced?
Answer: Signs that your battery needs replacing include significantly reduced playtime between charges, the speaker shutting off unexpectedly, or difficulty maintaining a charge. Observing these signs is crucial as they indicate that the battery is no longer functioning efficiently. Replacing the battery promptly allows you to regain the full capability of your PartyBox speaker, ensuring you continue to enjoy seamless music playback during your events. -
Question:
Where can I buy Replacement Battery Compatible With JBL PartyBox 520 And PartyBox 720?
Answer: You can purchase the Replacement Battery Compatible with JBL PartyBox 520 and PartyBox 720 from Ubuy. Ubuy offers a wide selection of electronic accessories, ensuring that you receive a quality product tailored for your JBL speakers. With their user-friendly platform, you can easily find and order the specific battery model you need, enhancing your audio experience and keeping your parties alive. -
Question:
Is this battery safe for indoor and outdoor use?
Answer: Yes, the replacement battery for JBL PartyBox 520 and PartyBox 720 is designed to be safe for both indoor and outdoor usage. When used in accordance with the device's guidelines, you can confidently take your speaker anywhere without worrying about safety issues. Whether you're hosting a backyard barbecue or enjoying music indoors, this battery supports versatile usage scenarios, enhancing your overall experience.
Palowextra Remote & App Controlled Vehicle Batteries FG6CELL21700G Editorial Review
Replacement Battery Compatible with JBL PartyBox 520 and PartyBox 720, Battery for Boombox 4 Portable Speaker, PN FG6CELL21700G is designed specifically for enhancing your audio experience with these models. This lithium-ion battery features a capacity of 4800 milliamp_hours and operates at 21.6 volts, ensuring extended playtime for all your gatherings. constructed by Palowextra, this rechargeable battery is lightweight at just 500 g and measures 2 x 3 x 1 inches, making it portable and easy to handle. Users appreciate the straightforward installation process and the reliability of the battery in powering their devices effectively, with many noting improved performance in their PartyBox speakers.
Customer Reviews & Ratings
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Pros
- Compatible with JBL PartyBox 520 and 720
- High capacity of 4800 mAh
- Lightweight design for portability
- Easy installation for users
- Rechargeable for convenience
Cons
- Limited to specific JBL models only
Platform Trust & Buyer Confidence
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Jasmin
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“Great products and very good service: very easy and very fast international delivery.”
9 September 2026 · via Trustpilot
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“I received exactly what I ordered I was skeptical about your site because that was my first time to order. But the order came timely and neatly packaged. I was not disappointed. Thank you.”
11 September 2026 · via Trustpilot
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“Easy to find and order what you want on the website. Delivery is quick to the UK”
8 September 2026 · via Trustpilot
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Important information
- Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
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XOF 61916
Order now and get it around Saturday, October 17
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Fastest cross-border delivery
Features & Benefits
- High-capacity replacement battery with 6000mAh to extend playtime.
- Compatible with PartyBox 520 and PartyBox 720 models.
- Safety tested for low-high temperature, impact, and overcharging.
- Reliable and manufactured to OEM standards.
- Includes USB C charging cable for convenient charging.
- Enhance your party experience with uninterrupted sound.
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