Purchased only to test an old phone, and it was not used after the test. Specifications: • Model: JS1 • Capacity: 1450mAh • Voltage: 3.7V • Condition: Like new, used for testing only Compatible with the following BlackBerry devices: Curve 9220 / 9230 / 9310 / 9315 / 9320 and BlackBerry 9720.