Battery type: Li-Ion - no memory-effect Capacity: 3400 mAh Voltage: 7.4 V Energy: 25.16 Wh Height: approx. 1.9mm Compatible with the following device models: Bang & Olufsen Beolit 15 Bang & Olufsen Beolit 17 To ensure compatibility, please check to see whether the battery you are currently using is listed below. Replacement for: Bang & Olufsen J406/ICR18650NH-2S .