In Stock. Bang & Olufsen Wireless Headset Battery Li-ion Battery fits Bang & Olufsen, Beoplay H7, Beoplay H8, Beoplay H9 3.7V, 650mAh CS-BPH800SL $27.17 The batteries we supply are high quality generic replacements for the original equipment manufacturer batteries, we have had so many satisfied customers using these batteries as an economical alternative to the original manufacturers battery. We want you to get the right battery first time. We will select the appropriate battery for you and guarantee... Add to cart