Replacement Battery Specification
- Battery Model: FG6CELL21700G
- Capacity: 5000mAh / 108Wh
- Voltage: 21.6V
- Battery Type: Li-ion
- Cell: Made in China, high quality guarantee
- Color: Black
- Condition: Replacement Battery (100% Brand New, 1-year warranty!)
Replace Part Number
- FG6CELL21700G
Compatible Device Model
- For JBL PartyBox 520
- For JBL PartyBox 720
- For JBL Boombox 4
- For JBL Battery 600
Product Features
- Ultra-High Capacity Party Performance: 5000mAh / 108Wh high-voltage lithium-ion battery delivers exceptional extended playback runtime for JBL PartyBox 520, PartyBox 720, and Boombox 4 premium Bluetooth speakers
- Premium High-Voltage Li-ion Cells: High-quality 21.6V lithium-ion cells provide consistent high-power delivery with stable voltage output for powerful JBL speaker performance during extended events
- OEM Replacement Quality: Meets or exceeds original JBL specifications for voltage, capacity, safety standards, and physical dimensions
- JBL PartyBox / Boombox Optimized: Specifically engineered for JBL PartyBox 520, PartyBox 720, Boombox 4, and Battery 600 for perfect fit and reliable battery management system integration
- Advanced Safety Protection: Multi-layer protection circuits guard against overcharge, over-discharge, short circuit, and thermal events during charging and playback
- Restore Party-Ready Performance: Revive your JBL PartyBox or Boombox with a fresh battery that restores full playback runtime and eliminates unexpected shutdowns during events and gatherings
Why Choose This Battery
Engineered specifically for JBL PartyBox 520, PartyBox 720, and Boombox 4 premium portable Bluetooth speakers, this ultra-high capacity 108Wh Li-ion replacement battery restores full playback capacity for party hosts, event organizers, outdoor adventurers, and music enthusiasts. Perfect for large outdoor parties, festival events, beach gatherings, camping trips, and extended DJ sessions.
Key Benefits:
- Compatible with JBL PartyBox 520, PartyBox 720, Boombox 4, and Battery 600, replaces FG6CELL21700G
- Ultra-high 5000mAh / 108Wh capacity supports exceptional extended party-ready runtime for music lovers
- Rigorous quality testing ensures capacity, voltage stability, and safety compliance for speaker use
- 1-year warranty and OEM-grade construction for reliable long-term performance
- Precision-engineered housing with multi-layer protection circuits for safe operation during charging and playback