Battery Replacement Guide for Braun Oral-B Triumph v2 Toothbrush incl. 4000, 5000, 6000, 7000 Pro - YouTube
Trade-Shop Replacement for Ni-MH Battery Braun 3731 3738 Compatible with Braun Oral-B OralB Professional Care 8000 8300 8500 9500 Triumph 400 9500 9900. NI-MH battery 1.2 V / 2500 mAh : Amazon.de: Health & Personal Care