{"product_id":"hp-probook-450-g8-replacement-battery-114v-3850mah-li-polymer","title":"HP ProBook 450 G8 11.4V Replacement Battery RH03XL 3850mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eHP ProBook 450 G8 \/ 650 G8 \/ 430 G8 — 11.4V Li-Polymer Replacement Battery (RH03XL)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is an 11.4V, 3850mAh (43.89Wh) Li-Polymer replacement battery for the HP ProBook 450 G8, 650 G8, and 430 G8 series notebooks. It fits using OEM part numbers RH03XL, HSTNN-IB9P, HSTNN-OB1T, and M01524-171, among others. It restores full portable operation when the original cell has degraded or failed.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eProBook 4x0\/650 G8 platform fit:\u003c\/strong\u003e\n    These three notebook lines share the same 11.4V three-cell Li-Polymer architecture, connector pinout, and BMS communication protocol — which is why a single part number covers all of them. The fuel gauge IC talks to HP's BIOS over the SMBus using the same EEPROM register map across the range.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell in a ProBook 450 G8 and confirmed the BMS handshake completed correctly, charge accepted through all three charge stages, and the SMBus reported state-of-charge without errors. No thermal events occurred across three full charge-discharge cycles.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle calibration after install:\u003c\/strong\u003e\n    After fitting this battery, run the laptop down to hibernate cutoff on normal workload — do not force shutdown — then charge uninterrupted to 100%. This forces the HP fuel gauge IC to re-learn the new cell's capacity curve and clears the inaccurate health warning that appears in HP Support Assistant 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 battery health as poor immediately after replacement\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eHP's BIOS reads health data from the battery's EEPROM on first boot. When a new cell arrives, the EEPROM cycle count is at zero and the full-charge capacity figure does not yet match the BIOS's learned value from the old cell — so it flags the battery as unknown or poor. This is not a fault with the replacement unit. Run one full discharge-to-hibernate cycle followed by an uninterrupted charge to 100%, and the BIOS battery learn cycle will update the stored capacity data. After one or two calibration cycles, HP Support Assistant should report normal health status.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLaptop shutting down at 20–30% charge shown on screen\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThis symptom means the fuel gauge IC's charge map is out of sync with the new cell's actual voltage curve. The gauge reports 20–30% remaining, but the cell voltage has already dropped below the BMS cutoff threshold under combined CPU and display load — so the system shuts off hard. It is a calibration gap, not a defective battery. Force a full discharge to hibernate (not sleep — hibernate) so the BMS logs the true empty voltage, then charge to 100% without interruption. After two full cycles the gauge should track accurately and the premature shutdowns will stop.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43409611358298,"sku":"BWCS-HPG458NB-1","price":83.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43409611391066,"sku":"BWCS-HPG458NB-2","price":99.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43409611423834,"sku":"BWCS-HPG458NB-3","price":110.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-HPG458NB-1.webp?v=1779580234","url":"https:\/\/batteryweb.com\/products\/hp-probook-450-g8-replacement-battery-114v-3850mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}