{"product_id":"samsung-galaxy-watch-6-classic-43mm-replacement-battery-388v-260mah-li-polymer","title":"Samsung Galaxy Watch 6 Classic 43mm Replacement Battery 3.88V 260mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSamsung Galaxy Watch 6 Classic 43mm — 3.88V Li-Polymer Replacement Battery (GH43-05160A)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.88V, 260mAh Li-Polymer cell for the Samsung Galaxy Watch 6 Classic 43mm, covering SM-R950 and SM-R955 variants. It replaces a degraded original cell in watches that no longer hold a charge through a full day of normal use. OEM part numbers GH43-05160A and EB-BR955ABY both cross to this cell.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSM-R950 and SM-R955 fitment:\u003c\/strong\u003e\n    Both variants share the same battery bay dimensions, connector orientation, and BMS handshake protocol — the same 21.30 x 21.10 x 4.70mm cell fits either watch without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through charge and discharge cycles on a Watch 6 Classic unit. The BMS accepted the cell without fault codes, and the fuel gauge IC initialised correctly after a full charge from near-zero.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-swap charge requirement:\u003c\/strong\u003e\n    After fitting this cell, place the watch on its magnetic charger immediately and charge to 100% before first use. The fuel gauge IC on this platform loses its reference point during cell removal — it cannot recalibrate unless it completes a full charge cycle starting from near-zero. Skipping this step causes the watch to report inaccurate percentages for days.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Watch 6 Classic reports wrong battery percentages after a cell swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Watch 6 Classic uses a fuel gauge IC that tracks charge state by counting coulombs from a known reference point. When you remove the old cell, that reference is wiped. The IC wakes up with a new cell and guesses the starting state — often incorrectly. A full charge cycle from near-zero gives the IC a clean upper calibration point, and a subsequent drain to around 10% sets the lower point. Until both points are established, percentage readings are estimates and will jump or drop unexpectedly.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eMagnetic charger not making contact after reassembly\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Watch 6 Classic charges through a magnetic puck that aligns to contact pads on the watch case back. If the back cover shifts even slightly during reassembly, the pads can sit off-centre relative to the charger coil and charging pins. The watch will show no charging indicator even though it appears seated on the puck. Re-seat the case back, press firmly around the perimeter until it clicks flush, then place it on the charger and confirm the charging icon appears within 10 seconds.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416151818330,"sku":"BWCS-SMR950SH-1","price":38.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416151851098,"sku":"BWCS-SMR950SH-2","price":45.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416151883866,"sku":"BWCS-SMR950SH-3","price":49.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-SMR950SH-1.webp?v=1779760485","url":"https:\/\/batteryweb.com\/products\/samsung-galaxy-watch-6-classic-43mm-replacement-battery-388v-260mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}