{"product_id":"hp-touchsmart-4-replacement-battery-148v-2700mah-li-polymer","title":"HP TouchSmart 4 Replacement Battery 14.8V 2700mAh HSTNN-IB3R","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eHP TouchSmart 4 \/ ENVY 4-1000 Series — 14.8V Li-Polymer Replacement Battery (HSTNN-IB3R)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 14.8V, 2700mAh (39.96Wh) Li-Polymer replacement battery for the HP TouchSmart 4 and ENVY 4-1000 series notebooks. It fits a wide range of OEM part numbers including HSTNN-IB3R, HSTNN-UB3R, EL04XL, and TPN-C102. The physical dimensions are 205.39 × 121.24 × 7.05mm — verify against your existing cell before fitting.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTouchSmart 4 and ENVY 4-1000 compatibility:\u003c\/strong\u003e\n    These models share the same 14.8V four-cell battery rail, connector pinout, and BMS handshake protocol — which is why one cell covers both product lines and all the listed OEM cross-reference numbers.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through charge, discharge, and reconnect cycles on a TouchSmart 4 unit. The BMS initialised without fault codes, and the BIOS battery status cleared correctly after a full learn cycle.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-install discharge cycle:\u003c\/strong\u003e\n    After fitting, run the laptop on battery from full charge down to automatic 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 this platform.\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\"\u003eThe HP BIOS on the TouchSmart 4 reads health data from EEPROM embedded in the old cell. When a new cell is fitted, that EEPROM data is gone — the BIOS flags the battery as unknown or degraded because it has no history to reference. This is not a fault with the replacement cell. Running one complete discharge-to-hibernate and uninterrupted charge-to-full cycle forces the BIOS to write fresh calibration data. After two to three of these cycles, the health indicator returns to normal.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLaptop shuts down abruptly at 20–30% charge shown on screen\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the cell voltage drops below the BMS cutoff threshold under combined CPU and display load — even though the OS fuel gauge still reads 20–30%. The fuel gauge IC has not yet calibrated to the new cell's actual discharge curve. The fix is to complete two or three full discharge-to-hibernate cycles without interruption. After calibration, the gauge tracks cell voltage accurately and the shutdown point aligns with the displayed percentage. Confirm calibration is complete when the laptop reaches hibernate at or below 5% shown.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43410738085978,"sku":"BWCS-HPY410NB-1","price":62.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43410738118746,"sku":"BWCS-HPY410NB-2","price":72.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43410738151514,"sku":"BWCS-HPY410NB-3","price":80.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-HPY410NB-1.webp?v=1779580839","url":"https:\/\/batteryweb.com\/products\/hp-touchsmart-4-replacement-battery-148v-2700mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}