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Series 4 approaching battery replacement threshold again. Thoughts on getting another replacement, or simply upgrading? : r/AppleWatch
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Testing Apple Watch Series 4 half marathon battery life with cellular off: over 50% after 2 hours - 9to5Mac
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Smartwatch Battery For Apple Watch Series 4 44mm A1976 A2059 Capacity 290mAh / 1.11Wh Color Black Type Li-Polymer Volts 3.82V - AliExpress
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Amazon.com: THIRDPOLE Battery Replacement for Apple Watch Series 4 44mm A2059 A1976 for Iwatch Series 4 44mm Battery Standard Capacity Battery Include Complete Repair Tools kit : Cell Phones & Accessories
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Amazon.com: Replacement Battery for Applee A1975 A1977 A2007 iWatch Series 4 40mm A2058 (220mAh) : Cell Phones & Accessories
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Amazon.com: Soseieiu Replacement Battery for Apple Watch Series 4 40mm,(𝟮𝟬𝟮𝟯 𝗡𝗲𝘄 𝗨𝗽𝗴𝗿𝗮𝗱𝗲𝗱) 224.9mAh A2058 A1975 A1977 with Repair Parts + Installation Manual + Back Cover Adhesive : Cell Phones & Accessories
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Amazon.com: E-YIIVIIL New Replacement Battery A2059 Compatible with Apple Watch Series 4 44mm 291.8mah with Tools : Cell Phones & Accessories
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Apple Watch Series 4 Teardown Reveals Battery Capacity, Heart Sensor Placement, and More | Technology News
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Apple Watch Series 4 Teardown: 20% Less Battery Capacity, Hidden Barometric Sensor, and Streamlined Internals [Updated] - MacRumors
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