Battery suitable for Sony SRS-X2 - 2400 mAh 3.7 V battery - BatteryUpgrade
New Battery for Sony SRS X2 Speaker 9 885 197 08 SF 02 Li ion Rechargeable 3.7V 2600mAh 3500mAh|Digital Batteries| - AliExpress
Amazon.com: MPF Products 3500mAh SF-02, 9-885-197-08 Battery Replacement Compatible with Sony SRS-X2 Wireless Portable Bluetooth Speaker with Installation Tools : Electronics
SRS-X2 New Battery for Sony SF-02 ,9-885-197-08, 2400mAh, replacement 7683465807327 | eBay
AKKU 31085: Battery for Sony SRS-X2, Li-Ion, 2400 mAh at reichelt elektronik
3500mAh SF-02 9-885-197-08 Battery Replacement for Sony SRS-X2 Bluetooth Speaker 744790341263 | eBay
3500mAh SF-02 9-885-197-08 Battery Replacement for Sony SRS-X2 Speaker
MPF Products 3500mAh SF-02 9-885-197-08 Battery Replacement for Sony SRS-X2 Bluetooth
Gomadic Intelligent Compact Car / Auto DC Charger suitable for the Sony SRS-X3 / SRS-X2 - 2A / 10W power at half the size. Uses Gomadic TipExchange Te - Walmart.com
Cameron Sino 2400mah Battery For Sony Srs-x2 Bluetooth Loudspeaker Battery Sf-02 - Smart Accessories - AliExpress
CS-SRX200SL 2400mAh / 8.88Wh Suitable for Sony SRS-X2, SRS-XB2
Help Guide | Connecting to an AC outlet
SONY SRS-X2 Battery Replacement - iFixit Repair Guide