Amazon.com: Synergy Digital Wireless Headset Batteries, Compatible with Corsair Gaming H2100 Dolby 7.1 Wireless Headset, (Li-Pol, 3.7V, 700 mAh), Combo-Pack Includes: 5 x SDHP-P1459 Batteries : Electronics
Amazon.com: Battery Replacement for Corsair CA-9011127-NA, CA-9011136-AP, Gaming H2100 Dolby 7.1 Wireless Gaming Headset, H2100 Part NO MH45908 : Video Games