Seiko MS621FE 3v Button Cell (with tags)

MS621FE 3v Lithium Ion rechargeable PCB style button cell. These batteries are used for memory backup applications (MBU) in servers and NAS devices. Battery includes PCB tags for soldering directly onto a circuit board.

Specifications:

Type: MS621FE
Nominal Voltage: 3v
Charge Voltage: 2.8 to 3.3v
Nominal Capacity: 5.5mah
Internal Impedance: 80 Ohm
Standard Charge Discharge Current: 0.015mah
Maximum Discharge Current: 0.25mah (Continuous)
Diameter: 6.8mm
Height: 2.1mm
Weight: 0.23g
Chemistry: Li-Ion