{"product_id":"sony-tablet-s-replacement-battery-37v-6000mah-li-polymer","title":"Sony Tablet S SGPBP04 Replacement Battery 3.7V 6000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSony Tablet S (SGPBP04) — 3.7V Li-Polymer Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 6000mAh lithium-polymer battery for the Sony Tablet S. It fits the GPT121 and SGPT121US\/S hardware platforms alongside the Tablet S. Capacity figures come from the product data — 6000mAh, 22.2Wh.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTablet S platform fit:\u003c\/strong\u003e\n    The GPT121 and SGPT121US\/S variants share the same battery bay dimensions, connector pin-out, and charge-management circuit as the base Tablet S. One battery cell covers the full platform without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through charge and discharge on the Tablet S platform. The onboard battery management system accepted the new cell, completed a full charge cycle without fault flags, and the charge IC reported correct voltage at rest.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge reset after installation:\u003c\/strong\u003e\n    After fitting the new cell, run the tablet down to automatic shutoff, then charge it uninterrupted to 100% without using the device. This single full cycle resets the fuel gauge IC calibration against the new cell and clears the inaccurate percentage readings that commonly appear after a swap.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSony Tablet S shutting down between 15% and 25% remaining\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThis is a voltage-cliff failure. Under combined load — backlight at full, WiFi active, background sync running — the cell voltage drops faster than the fuel gauge expects. The system hits the low-voltage cutoff threshold before the displayed percentage reaches zero. The fuel gauge IC is still calibrated to the old, degraded cell curve. One full discharge-to-shutoff followed by an uninterrupted charge to 100% remaps the gauge to the new cell. After that cycle, the percentage display tracks the actual cell state accurately.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBattery percentage jumping or reading incorrectly after the swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe fuel gauge IC stores a charge profile from the previous cell. When a new cell is installed, the stored profile no longer matches the actual voltage curve, so the displayed percentage drifts or jumps. This is a calibration mismatch — not a fault in the new cell. Discharge the tablet fully until it powers off on its own, then charge it to 100% without interruption. The IC re-learns the new cell's voltage curve and the percentage stabilises at that point.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43426052341850,"sku":"BWCS-SPT121SL-1","price":52.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43426052374618,"sku":"BWCS-SPT121SL-2","price":61.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43426052407386,"sku":"BWCS-SPT121SL-3","price":68.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-SPT121SL-1.webp?v=1779930219","url":"https:\/\/batteryweb.com\/products\/sony-tablet-s-replacement-battery-37v-6000mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}