Spare battery for Poly Spare Battery for CS/Savi headsets – Poly 202599-03 or HP 85Q97AA will give you peace of mind. The proprietary size offers better reliance and optimal performance. Now with 13 hours of talk time with most units.
- Spare battery for select wireless headsets
- Compatible with CS510/CS520/W410/W420/W710/W720
- Lithium-ion composition
