Before purchase please make sure the battery fits the brand, model and part number described below.

Compatible Model:

Plantronics Savi W8220/ Savi 8220/B8200
Replaces Battery Number:
213199-01/ 203055-01/203035-01/ 208769-02/208769-01
Specifications:
Voltage: 3.7V
Rate:1.78 Wh
Type: Li-Polymer
Capacity: 480mAh
Weight: 10.0g / 0.35oz
Size: 29.50 x 24.10 x 7.60mm
Tips

1). Last as long as the original battery and can be installed pretty easily.

2). Safety Battery, The replacement battery comes with protective design, prevents damage from over-charge, over-discharge, over-voltage, over-heating, short-circuit, it is safe and stable to use.

3). Precise battery interface , fit with original machine and charger. Same size & function as original battery, don't worry damaging the machine.

No Power?

1). Must be fully charged for first use, make sure your battery has charge.

2). Check the battery casing isn't cracked or damaged.

3). If you are worried about screwing up, you can refer to related videos on Youtube.