{"product_id":"amazon-kindle-fire-m8s26g-replacement-battery-38v-3000mah-li-polymer","title":"Amazon Kindle Fire M8S26G Replacement Battery 3.8V 3000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eAmazon Kindle Fire 2019 9th Generation — 3.8V Li-Polymer Replacement Battery (MC-308695)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.8V, 3000mAh lithium-polymer battery replaces the original cell in the Amazon Kindle Fire M8S26G and Kindle Fire 2019 9th Generation tablets. It matches the OEM part numbers MC-308695, 58-000255, and ST28. When the original cell no longer holds a charge or the tablet shuts down unexpectedly, this is the direct replacement cell for that board.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eKindle Fire 9th Gen platform fit:\u003c\/strong\u003e\n    The M8S26G and the 2019 9th Generation Kindle Fire share the same battery bay dimensions, connector pinout, and BMS handshake protocol. Both accept this 97.00 × 84.90 × 2.62mm cell without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this battery through charge and discharge on a Kindle Fire 9th Gen unit. The BMS accepted the cell on first connection, reported state-of-charge correctly after one full calibration cycle, and held voltage within spec across display and WiFi combined load.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge IC reset after installation:\u003c\/strong\u003e\n    After fitting this battery, run one full discharge to automatic shutoff, then charge uninterrupted to 100%. The Kindle's fuel gauge IC calibrates against the new cell during that first cycle. Skipping this step causes the percentage display to read inaccurately for days.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eKindle Fire 9th Gen shutting down at 15–25% remaining after a battery swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens because the fuel gauge IC is still calibrated to the old cell's voltage curve. The new cell has a slightly different discharge profile, and the IC interprets a voltage dip under combined display and WiFi load as a critical low-battery condition. The tablet triggers a protective shutdown before the cell is actually depleted. One full discharge-to-shutoff followed by an uninterrupted charge to 100% resets the IC's reference points and resolves the premature cutoff.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eFast charging not available on the Kindle Fire after battery replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Kindle Fire's charge IC uses a USB-PD negotiation handshake to enable faster charge rates. On a freshly installed cell, that handshake sometimes does not complete until the battery has accepted at least one full charge cycle. Use the original Amazon 9W adapter, not a third-party charger, for the first charge. After one complete cycle the charge IC re-negotiates correctly and faster charging resumes at the standard rate.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43425830862938,"sku":"BWCS-ABD826SL-1","price":36.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43425830895706,"sku":"BWCS-ABD826SL-2","price":42.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43425830928474,"sku":"BWCS-ABD826SL-3","price":47.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-ABD826SL-1.webp?v=1779929903","url":"https:\/\/batteryweb.com\/products\/amazon-kindle-fire-m8s26g-replacement-battery-38v-3000mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}