{"product_id":"amazon-kindle-fire-hd-7-replacement-battery-37v-3500mah-li-polymer","title":"Amazon Kindle Fire HD 7\" MC-347993 Replacement Battery 3.7V 3500mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eAmazon Kindle Fire HD 7\" — 3.7V Li-Polymer Replacement Battery (MC-347993)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 3500mAh lithium-polymer cell replacing the original MC-347993 battery in the Amazon Kindle Fire HD 7\" tablet (models SQ46CW, B00IKPYKWG, B00IKPW0UA). It fits the same physical footprint at 93 × 78 × 3.50mm and connects to the same charge IC on the mainboard. Capacity matches OEM spec at 12.95Wh.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSQ46CW, B00IKPYKWG, B00IKPW0UA compatibility:\u003c\/strong\u003e\n    All three Kindle Fire HD 7\" variants use the same battery bay dimensions, the same 3.7V charging rail, and the same connector latch. One cell covers all three 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 a Kindle Fire HD 7\" unit. The BMS accepted the cell on first connection, the charge IC recognised the correct chemistry, and the tablet completed a full charge cycle without fault flags.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration after swap:\u003c\/strong\u003e\n    After fitting this battery, run the tablet down to automatic shutoff — do not force-power it off. Then charge uninterrupted to 100%. This gives the fuel gauge IC a full reference cycle against the new cell and clears the inaccurate percentage readings that appear immediately 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\"\u003eKindle Fire HD 7\" shutting down at 15–25% remaining\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens because the display backlight and active WiFi together pull enough current to cause a rapid voltage drop near the lower end of the cell's discharge curve. The fuel gauge IC — still calibrated to the old degraded cell — misreads the remaining capacity and triggers an early shutdown. Fitting a new cell alone does not fix this; the gauge still has stale reference data. Run one full discharge-to-shutoff followed by a full uninterrupted charge. After that cycle, the shutdowns at 15–25% stop.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePercentage jumping or dropping fast from 100% after battery replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe fuel gauge IC on the Kindle Fire HD 7\" stores calibration data tied to the old cell's internal resistance profile. When a new cell goes in, the IC is reading the wrong map — so reported percentage drifts or drops faster than actual charge level. This is not a fault with the replacement cell. Charge the tablet fully, use it to automatic shutoff without interruption, then charge again to 100%. That two-point calibration resets the IC's reference curve to the new cell.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43426011119706,"sku":"BWCS-ABD460SL-1","price":27.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43426011152474,"sku":"BWCS-ABD460SL-2","price":31.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43426011185242,"sku":"BWCS-ABD460SL-3","price":34.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-ABD460SL_1.webp?v=1779930195","url":"https:\/\/batteryweb.com\/products\/amazon-kindle-fire-hd-7-replacement-battery-37v-3500mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}