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Kastar 4-Pack 1.2V 2200MAh Ni-MH Battery Compatible with Braun Toothbrush 3509 3510 3511 3520 3610 3612 3614 3615 3710 3770 3775 4000 4005 4010 4015 4500 4501 4502 4503 4504 4505 4508 4509 4510 4515 - Walmart.com
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Amazon.com: Kastar 2-Pack 1.2V 2000mAh Ni-MH Battery Replacement for Braun 5414 5415 5416 5417 5419 5420 5421 5422 5423 5424 5426 5428 5434 5437 5441 5442 5443 5444 5459 5461 5462 5465 5466 5468 5469 5470 5471 : Cell Phones & Accessories
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Amazon.com: HQRP Battery Compatible with Braun 6518 6522 6620 6680 7475 Shaver Repair + HQRP Coaster : Beauty & Personal Care
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