{"product_id":"clevo-c4500-replacement-battery-111v-4400mah-li-ion","title":"Clevo C4500BAT-6 Replacement Battery 11.1V 4400mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eClevo C4500 Series — 11.1V Li-ion Replacement Battery (C4500BAT-6)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is an 11.1V, 4400mAh (48.84Wh) Li-ion battery that replaces the original C4500BAT-6 cell in Clevo notebooks. It fits the C4500, C4500Q, W240EU, W250HU, and over 129 additional Clevo models that share this battery slot and connector. When the factory cell degrades and stops holding charge, this brings the machine back to full portable operation.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eC4500 platform compatibility:\u003c\/strong\u003e\n    The C4500, C4500Q, W240EU, and W250HU series all share the same 11.1V three-cell architecture, connector pinout, and BMS communication protocol — that is why one part number covers the full range.\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 Clevo hardware. The BMS handshake initialised correctly, charge acceptance was consistent across all three cell groups, and protection circuits triggered at expected voltage thresholds.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBIOS learn cycle after install:\u003c\/strong\u003e\n    After fitting this battery, run the laptop down to hibernate cutoff on battery only, then charge uninterrupted to 100% without powering on mid-cycle. This forces the BIOS to recalibrate its fuel gauge against the new cell and clears the false \"poor 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\"\u003eClevo BIOS reporting poor battery health immediately after swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Clevo firmware stores battery health data in EEPROM on the old cell. When a new cell is installed, the BIOS reads no accumulated cycle history and flags the battery as unknown or unhealthy — this is a firmware artefact, not a fault with the replacement cell. Running a full discharge-to-hibernate followed by an uninterrupted charge to 100% rewrites the BIOS battery learn cycle against the new chemistry. Until that cycle completes, health warnings and inaccurate capacity readings are expected. After one or two full cycles, the reported health figure normalises.\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 voltage curve. The OS reads a state-of-charge figure from the old calibration table, so it shows 25% remaining while the actual cell voltage has already dropped to the BMS cutoff threshold — the system shuts off without warning. The fix is two full discharge-to-hibernate cycles charged back to 100% each time, which lets the fuel gauge IC map the new cell's discharge curve accurately. After calibration, the percentage readout and the actual remaining capacity will align, and the premature shutdowns stop.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43409818353754,"sku":"BWCS-CLM450NB-1","price":104.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43409818386522,"sku":"BWCS-CLM450NB-2","price":118.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43409818419290,"sku":"BWCS-CLM450NB-3","price":129.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-CLM450NB-1.webp?v=1779581092","url":"https:\/\/batteryweb.com\/products\/clevo-c4500-replacement-battery-111v-4400mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}