{"product_id":"hasee-z7-ct7nk-replacement-battery-144v-2200mah-li-ion","title":"Hasee Z7-CT7NK Replacement Battery 14.4V 2200mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eHasee Z7-CT7NK Series — 14.4V Li-ion Replacement Battery (6-87-NH50S-41C00)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 14.4V, 2200mAh (31.68Wh) Li-ion battery for the Hasee Z7-CT7NK and related gaming notebooks. It also fits the Z7-CT7VH, G8-CT7NT, Z7-CT7PRO, and over 19 additional Hasee models sharing the same connector and BMS handshake. OEM part numbers are 6-87-NH50S-41C00 and NH50BAT-4.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eZ7 and G8 platform compatibility:\u003c\/strong\u003e\n    These models share a common NH50 battery bay, four-pin connector, and BMS communication protocol — the same cell slides in without adapter or firmware modification across all listed variants.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through charge and discharge on NH50-platform hardware. The BMS handshook cleanly, charge current tapered normally at saturation, and protection circuits tripped correctly at low-voltage cutoff.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install calibration cycle:\u003c\/strong\u003e\n    After fitting this cell, run the laptop down to hibernate cutoff under normal load, 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 Hasee NH50-platform machines.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Z7-CT7NK BIOS flags the replacement cell as poor health\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe BIOS on NH50-platform Hasee notebooks stores learned capacity data in EEPROM from the previous cell. When a new cell goes in, that stored data no longer matches what the fuel gauge IC is reading from the fresh chemistry. The system interprets the mismatch as degradation and raises a health warning — even on a brand-new cell. Running one full discharge-to-hibernate, then an uninterrupted charge to 100%, lets the fuel gauge IC write new baseline figures to EEPROM and clears the flag. No firmware update or BIOS reset is needed — the calibration cycle handles it.\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 is still reading from stale EEPROM data written by the old, degraded cell. The percentage shown on screen no longer matches the actual voltage the new cell is holding under load. Under full CPU and display draw, the cell hits a real voltage floor before the OS percentage reaches zero — the BMS trips and shuts the system down. Run two full calibration cycles as described above; after the second cycle, the gauge IC re-anchors to the new cell's actual voltage curve and the early shutdowns stop.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43409593925722,"sku":"BWCS-CLH580NB-1","price":65.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43409593958490,"sku":"BWCS-CLH580NB-2","price":77.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43409593991258,"sku":"BWCS-CLH580NB-3","price":86.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-CLH580NB-1.webp?v=1779580129","url":"https:\/\/batteryweb.com\/products\/hasee-z7-ct7nk-replacement-battery-144v-2200mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}