Synergy Digital Player Battery, Compatible with Astell&Kern AK380 Player, (Li-Pol, 3.8V, 3300mAh) Ultra High Capacity, Replacement for Astell&Kern CP-AK380 Battery
Specifications:
Battery Chemstry: Li-Pol
Voltage: 3.8V
Capacity: 3300mAh
Compatible with: Astell&Kern CP-AK380 Battery
Works for: Astell&Kern AK380 Player and many more