{"product_id":"hp-envy-x360-m6-replacement-battery-154v-3400mah-li-ion","title":"HP Envy X360 M6 Compatible Battery 15.4V 3400mAh MB04XL","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eHP Envy X360 M6 — 15.4V Li-ion Replacement Battery (MB04XL)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 15.4V lithium-ion battery rated at 3400mAh (52.36Wh), built to fit the HP Envy X360 M6 convertible laptop. It covers models including the M6-AQ105DX, M6-AQ003DX, and M6-AQ005DX, along with the broader M6 series. Cross-reference OEM part numbers MB04XL, HSTNN-UB6X, or TPN-W119\/W120 before ordering.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eEnvy X360 M6 platform fit:\u003c\/strong\u003e\n    The M6 series runs a shared 15.4V four-cell battery rail across its convertible chassis. All covered models use the same connector pinout, BMS handshake protocol, and EEPROM charge data structure — which is why one part number covers the full lineup.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell on an M6 chassis and verified the BMS initialised cleanly, the EEPROM flagged no fault codes, and charge current stepped down correctly at the 80% and 100% thresholds. No false over-temperature trips occurred during the test.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install calibration on the Envy X360 M6:\u003c\/strong\u003e\n    After fitting, run the laptop down to hibernate-cutoff on battery alone — no AC adapter — then charge uninterrupted to 100%. This forces the fuel gauge IC to recalibrate against the new cell's actual capacity curve and clears the inaccurate health warning the BIOS throws after any 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 fitting a new cell\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe HP Envy X360 BIOS reads health status from EEPROM data stored during the previous cell's charge cycles. When a new cell goes in, that EEPROM register hasn't been written yet, so the BIOS flags the battery as degraded or unknown — even though the cell is fresh. This is not a fault with the replacement; it's a data gap. Running one full discharge-to-hibernate then an uninterrupted charge to 100% lets the battery controller rewrite the EEPROM registers with current cell data, and the health warning clears on the next boot.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eEnvy X360 M6 shutting down abruptly at 20–30% charge shown\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis usually points to a voltage cliff — the cell drops below the BMS cutoff threshold under combined CPU and display load before the fuel gauge reaches zero. On a worn original battery, the internal resistance has risen enough that load spikes pull the cell voltage below roughly 12.5V momentarily, triggering an emergency shutdown. The OS-reported percentage is based on the fuel gauge estimate, not real-time cell voltage, so the two figures diverge under load. Run a full calibration cycle first — discharge to hibernate-cutoff, charge to 100% uninterrupted — and retest. If the shutdown persists on a brand-new cell, check for a BIOS update from HP that recalibrates the low-voltage threshold for the M6 platform.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43409737154650,"sku":"BWCS-HPM360NB-1","price":117.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43409737187418,"sku":"BWCS-HPM360NB-2","price":134.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43409737220186,"sku":"BWCS-HPM360NB-3","price":147.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-HPM360NB-1.webp?v=1779580583","url":"https:\/\/batteryweb.com\/products\/hp-envy-x360-m6-replacement-battery-154v-3400mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}