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Battery Replacement Guide for Braun Oral-B Type 3766 & 3767 Toothbrush - Pro 2 3 4 2000 3000 4000 - YouTube
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Amazon.com: FDK OEM NiMH Replacement Battery Compatible with Braun Oral-b Triumph Professional Care Toothbrush with Narrow Tabs, (48L x 17D mm, 2700 mAh) : Everything Else
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