{"product_id":"hasee-k680e-g6d1-replacement-battery-111v-4400mah-li-ion","title":"Hasee K680E-G6D1 Replacement Battery 11.1V 4400mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eHasee K680E-G6D1 Series — 11.1V Li-ion Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is an 11.1V, 4400mAh (48.84Wh) Li-ion battery for Hasee notebooks including the K680E-G6D1, K680E-G4E3, CW65S08, and K680E-G4D4 among others. It replaces the original cell when the existing pack no longer holds a usable charge or fails to power the system entirely. Voltage and connector match the original — no modification required.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eK680E and CW65S08 platform compatibility:\u003c\/strong\u003e\n    These models share a common battery bay format, connector pinout, and BMS communication protocol. The same 11.1V three-cell configuration runs across this entire Hasee notebook family, which is why a single replacement cell covers all listed fit models.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through charge, full load discharge, and BMS handshake verification. The protection circuit responded correctly to overcurrent and low-voltage cutoff events. BIOS read the cell as recognised and reported Wh capacity within expected range.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle reset after install:\u003c\/strong\u003e\n    After fitting this battery, run one full discharge down to the laptop's hibernate cutoff, then charge uninterrupted to 100%. This forces the BIOS battery learn cycle to recalibrate against the new cell and clears the inaccurate health warning that appears after every cell swap.\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 replacement\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe Hasee BIOS stores the previous cell's EEPROM data and compares it against the new pack on first boot. When the figures don't match, it flags the battery as degraded — even if the new cell is at full capacity. This is not a fault with the replacement. Running one complete discharge-to-hibernate followed by a full uninterrupted charge resets the learn cycle. After two to three full cycles, the BIOS health indicator will update to reflect the actual cell state.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLaptop shutting down at 20–30% charge shown on screen\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the fuel gauge IC is still calibrated to the old cell's discharge curve. The OS reads 25% remaining, but the new cell's voltage under combined CPU and display load drops below the BMS cutoff threshold before the gauge catches up. It is a calibration gap, not a defective cell. Run two full discharge cycles to hibernate-cutoff and charge back to 100% each time — the fuel gauge IC will map the new cell's curve and the shutdowns will stop.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43409677910106,"sku":"BWCS-CLW540NB-1","price":75.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43409677942874,"sku":"BWCS-CLW540NB-2","price":88.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43409677975642,"sku":"BWCS-CLW540NB-3","price":97.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-CLW540NB-1.webp?v=1779580399","url":"https:\/\/batteryweb.com\/products\/hasee-k680e-g6d1-replacement-battery-111v-4400mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}