{"product_id":"samsung-gear-s-replacement-battery-37v-170mah-li-polymer","title":"Samsung Gear S Replacement Battery 3.7V 170mAh EB-BR750","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSamsung Gear S \/ Galaxy Gear S R750 — 3.7V Li-Polymer Replacement Battery (EB-BR750ABE)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V, 170mAh Li-Polymer cell replaces the original EB-BR750ABE battery in the Samsung Gear S smartwatch. It fits the SM-R750V, SM-R750R4, and all variants in the Galaxy Gear S R750 line. Dimensions are 30.60 × 27.80 × 3.48mm — matching the curved cell bay in the original chassis.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eR750 platform fit:\u003c\/strong\u003e\n    The SM-R750 series shares a single battery bay spec across carrier variants — Verizon (SM-R750V), US Cellular (SM-R750R4), and unlocked units. The connector pinout and BMS handshake are identical across all, so one cell covers the full line.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through the R750 charge controller and confirmed the BMS accepted the new cell without fault flags. Charge acceptance and cutoff voltage at 4.2V both matched factory spec.\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 use. The fuel gauge IC on the R750 loses its reference point when the cell is swapped and cannot recalibrate without a full charge cycle from near-zero.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Gear S shows 0% immediately after a battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe R750 uses a coulomb-counting fuel gauge IC that tracks charge state relative to a stored reference. When you remove the old cell, that reference resets to zero. The watch reports 0% because the IC has no data on the new cell's actual state of charge. Placing the watch on the charger right after reassembly lets the IC run a full calibration sweep from near-empty to 4.2V. After one complete charge cycle, the percentage readout stabilises and tracks accurately.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eGear S draining to empty within a single day after swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eIf the watch drops to zero within a day, the most common cause is the always-on display combined with continuous heart rate monitoring running simultaneously — both were likely disabled on the degraded original cell to conserve power. The new cell exposes full draw for the first time. Check Settings → Watch faces and turn off Always On Display if it was re-enabled automatically after the swap. Also verify HR monitoring is set to manual rather than continuous in the Samsung Health app, which cuts resting sensor current significantly.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416174231642,"sku":"BWCS-SMR750SH-1","price":23.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416174264410,"sku":"BWCS-SMR750SH-2","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416174297178,"sku":"BWCS-SMR750SH-3","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-SMR750SH-1.webp?v=1779760648","url":"https:\/\/batteryweb.com\/products\/samsung-gear-s-replacement-battery-37v-170mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}