Synergy Digital Speaker Battery, Compatible with Sony SRS-XB23 Speaker, (Li-ion, 3.78V, 3000mAh) Ultra High Capacity, Replacement for Sony ST-05 Battery
Specifications:
Battery Chemistry: Li-ion
Voltage: 3.78V
Capacity: 3000mAh
Compatible with: Sony ST-05 Battery
Works for: Sony SRS-XB23 Speaker and many more