{"product_id":"hasee-k660e-i7-d8-replacement-battery-148v-5200mah-li-ion","title":"Hasee K660E-I7 D8 Replacement Battery 14.8V 5200mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eHasee K660E-I7 D8 \/ K650S-i7 Series — 14.8V Li-ion Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 14.8V, 5200mAh (76.96Wh) Li-ion battery for the Hasee K660E-I7 D8, K650S-i7, K660E-i7 D1, K710C-i7, and related models. It replaces the original cell when the laptop no longer holds charge or powers on without AC. Voltage, connector, and BMS communication match the original specification for these models.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eK660E \/ K650S \/ K710C platform fit:\u003c\/strong\u003e\n    These models share a common 14.8V four-cell Li-ion architecture with the same battery bay footprint (143.50 × 94.00 × 23.15mm), connector pinout, and BMS handshake protocol — which is why a single cell covers the entire group.\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 K-series hardware. The BMS accepted the cell without fault codes, and the protection circuit tripped correctly at low-voltage cutoff as expected.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBIOS learn cycle after install:\u003c\/strong\u003e\n    After fitting this battery, run one full discharge to hibernate cutoff, then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the inaccurate health warning that appears after every cell swap on Hasee K-series machines.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBIOS reporting poor battery health immediately after fitting a new cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eHasee K-series laptops read health data from the battery's EEPROM and compare it against the original factory baseline stored in BIOS. A new cell carries a fresh EEPROM, which conflicts with that baseline and triggers a false \"poor health\" or \"replace battery\" warning. This is not a fault with the cell. Running one complete discharge-to-cutoff followed by a full uninterrupted charge allows the BIOS to rewrite its reference data against the new cell's EEPROM values and clear the warning.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLaptop shuts down at 20–30% charge shown on screen\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the fuel gauge IC has not yet calibrated against the new cell's actual charge curve. The IC is still using the old cell's voltage-to-capacity mapping, so it misreads the remaining charge and the system shuts down before the gauge reaches zero. The fix is calibration: discharge the laptop fully to hibernate cutoff under normal CPU and display load, then charge to 100% without interruption. Repeat this cycle two to three times until the displayed percentage tracks accurately — at that point the gauge should align to within a few percent of actual cell voltage.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43409683873882,"sku":"BWCS-CLW350NB-1","price":80.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43409683906650,"sku":"BWCS-CLW350NB-2","price":93.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43409683939418,"sku":"BWCS-CLW350NB-3","price":103.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-CLW350NB-1.webp?v=1779580400","url":"https:\/\/batteryweb.com\/products\/hasee-k660e-i7-d8-replacement-battery-148v-5200mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}