September 2, 2020 sunpow Koss BT540i Headset Battery Part Number:CP-KS540I Type: Li-Polymer Voltage: 3.7V Capacity: 295mAh Compatible with Koss KPH7 Wireless,Koss BT540i Share this: Click to share on Reddit (Opens in new window) Reddit TweetShare on Tumblr Click to share on WhatsApp (Opens in new window) WhatsApp Click to share on Telegram (Opens in new window) Telegram Like Loading... Related