Synergy Digital Wireless Headset Replacement Batteries for Bose QuietComfort 20i - 4 Pack Li-Polymer 3.7V 240mAh Rechargeable Batteries - Perfect for Travel, Work & Noise Cancelling Headphones

Synergy Digital Wireless Headset Batteries, Compatible with Bose QuietComfort 20i Wireless Headset, (Li-Pol, 3.7V, 240 mAh), combo-pack includes: 4 x EM-CPP-565 Batteries

(Li-Pol, 3.7V, 240mAh)

Replacement for Bose PR-452035 Battery

Made with high quality Japanese cells.

100% compatible with your OEM battery.