Battery Replacement Guide for Braun Oral-B Triumph v2 Toothbrush incl. 4000, 5000, 6000, 7000 Pro - YouTube
Braun Oral-B Triumph v1 Battery Replacement Guide
Replacement Battery for Braun Oral-b Triumph Professional Care Toothbrush, FDK NiMH 2150 mAh with Narrow Tabs, 43 mm Long, 17 mm Diameter, - Newegg.com
Amazon.com: Replacement Battery compatible with Braun Oral-b Triumph Professional Care Toothbrush, 42 mm L X 17 mm D : Health & Household
Amazon.com: Replacement Rechargeable Battery Compatible with Braun Oral-b Triumph Professional Care Toothbrush, Panasonic NiMH with Narrow Metal Tabs, 50 mm Long, 17 mm Diameter : Health & Household
Cameron Sino 2500mAh Battery for Oral-B Triumph 4000 5000 9000 9400 9500 9900,Professional Care 8000 8300, please note the sizes - AliExpress