Poly Lithium Battery for CS540 Headset

The Poly 85Q98AA is a rechargeable lithium polymer battery created for one purpose: keeping the Poly CS540 wireless headset running at full strength. It delivers 3.7 volts and 140 mAh of capacity, giving the headset up to seven hours of talk time on a single charge. When the original battery no longer holds a charge, swapping in this genuine replacement restores clear calls and reliable performance without forcing you to replace the entire headset.

Installation is straightforward. The battery fits the CS540 battery bay precisely, so you can pop out the old cell and click the new one into place in moments. Because the battery is light in weight and compact, it preserves the comfortable feel that makes the CS540 popular in busy offices and call centers.

For professionals who spend most of the day on calls, a dependable power source is essential. This battery supports long shifts, remote customer service sessions, and back-to-back meetings, helping you stay connected without interruptions. Its rechargeable design also reduces waste and saves recurring costs compared with disposable alternatives, an advantage for both individual users and large teams that manage multiple headsets.

• Purpose-built for the Poly CS540 wireless headset
• Supplies up to seven hours of talk time per charge
• 3.7 V, 140 mAh lithium polymer chemistry
• Rechargeable cell for long-term use and less waste
• Installs quickly and keeps the headset light and comfortable