How to replace battery in Philips Beard Trimmer BT5501? : r/ifixit
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Philips - Electric Beard Trimmer with Rechargeable Battery, Black - Walmart.com
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Amazon.com: Philips Norelco Series 9000, Ultimate Precision Beard and Hair Trimmer with Beard Sense Technology for an Even Trim, BT9810/40 : Beauty & Personal Care
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Philips - Electric Beard Trimmer with Rechargeable Battery, Black - Walmart.com