{"product_id":"sager-np7339-replacement-battery-111v-5200mah-li-ion","title":"Sager NP7339 Replacement Battery 11.1V 5200mAh Li-ion","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSager NP7339 — 11.1V Li-ion Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 11.1V, 5200mAh (57.72Wh) Li-ion battery is a direct cell replacement for the Sager NP7339 notebook. It matches the original connector layout, voltage rail, and BMS handshake protocol. Install it when the factory cell no longer holds sufficient charge to sustain normal use away from the wall.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eNP7339 platform fit:\u003c\/strong\u003e\n    The NP7339 uses an 11.1V three-cell series configuration with a specific BMS communication line. This cell matches that voltage rail and connector pinout, so the BIOS recognises it without error on boot.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through full charge and load discharge on the NP7339 platform. The BMS balanced all three cell groups within normal limits and held voltage above the cutoff threshold under sustained CPU and display load.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle calibration on the NP7339:\u003c\/strong\u003e\n    After installing, run one complete discharge to 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\"\u003eNP7339 shutting down at 20–30% charge shown\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the fuel gauge IC has not yet calibrated against the new cell's actual capacity curve. The BIOS still references discharge data from the old, degraded cell. Under combined CPU and display load, the real cell voltage drops faster than the old curve predicts, triggering an emergency shutdown. Run two full discharge-to-hibernate cycles followed by uninterrupted charges to 100% — the fuel gauge IC recalibrates and the shutdowns stop.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBIOS showing battery Wh rating as incorrect after swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe system reads Wh data from the battery's EEPROM, not from live cell measurement. If the EEPROM-stored value differs from the physical chemistry of the replacement cell, Windows or the BIOS will display a Wh figure that does not match the label. This is a data mismatch — not a fault. The cell operates normally at its rated 57.72Wh capacity. Complete the calibration cycle and the displayed value will settle to the correct figure once the fuel gauge IC writes fresh data.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43409682595930,"sku":"BWCS-CLW230NB-1","price":73.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43409682628698,"sku":"BWCS-CLW230NB-2","price":86.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43409682661466,"sku":"BWCS-CLW230NB-3","price":95.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-CLW230NB-1.webp?v=1779580399","url":"https:\/\/batteryweb.com\/products\/sager-np7339-replacement-battery-111v-5200mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}