This Aftermarket CS-SRX310SL Battery is built specifically as a replacement for the Sony Speaker SRS-X3 Battery and the SRS-XB2 Battery. As a direct cross to the Sony ST-01 Battery, it delivers 7.4V/2600mAh of Power.
This battery will fit the following models:
Sony: SRS-X3, SRS-XB2, SRS-XB20
This battery will replace the following part numbers:
Dimension: 65.85 x 36.80 x 19.10mm