{"product_id":"xiaomi-mi-ruby-156-replacement-battery-154v-2500mah-li-polymer","title":"Xiaomi MI Ruby 15.6 Replacement Battery N15B01W 15.4V","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eXiaomi MI Ruby 15.6 — 15.4V Li-Polymer Replacement Battery (N15B01W)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a Li-Polymer replacement battery for the Xiaomi MI Ruby 15.6 laptop. It carries a 15.4V nominal voltage and 2500mAh (38.5Wh) capacity, matching the original N15B01W specification. It fits the MI Ruby 15.6 directly, restoring untethered use when the original cell has degraded or failed.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMI Ruby 15.6 fitment:\u003c\/strong\u003e\n    The N15B01W uses a specific connector pinout and BMS handshake matched to the MI Ruby 15.6 motherboard. The voltage rail and protection circuit parameters are set to what the system expects — not a generic 15.4V pack.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell on the MI Ruby 15.6 platform, confirming BMS communication, charge acceptance, and discharge cutoff at the correct low-voltage threshold. The protection circuit tripped cleanly at full depletion with no over-discharge event recorded.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle reset procedure:\u003c\/strong\u003e\n    After installation, run the laptop on battery until it hibernates at cutoff, then charge uninterrupted to 100% without interruption. This forces the BIOS battery learn cycle to reset against the new cell and clears the inaccurate health warning that appears 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\"\u003eWhy the MI Ruby 15.6 shuts down at 20–30% remaining after a battery swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens because the BIOS fuel gauge IC still holds calibration data from the old, degraded cell. When the new cell hits what the system thinks is near-empty, it forces an immediate shutdown — even though the cell has capacity left. The voltage under full CPU and display load drops steeply at that state-of-charge point, which the uncalibrated gauge misreads as a critical threshold. Run two full discharge-to-hibernate and uninterrupted charge-to-100% cycles to allow the fuel gauge IC to recalibrate against the new cell's actual voltage curve.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBIOS reporting new N15B01W battery health as poor or unknown immediately after install\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe MI Ruby 15.6 BIOS reads health data stored in the battery's EEPROM and compares it against charge history from the previous cell. A fresh cell has no accumulated cycle data, so the system flags it as unknown or degraded — this is a data mismatch, not a fault with the replacement cell. The fix is a full battery learn cycle: discharge fully to hibernate cutoff, then charge to 100% without interruption. After one to two complete cycles, the BIOS rewrites its health reference and the warning clears. If it persists beyond three cycles, check BIOS version — some MI Ruby 15.6 firmware builds require an update to handle cell resets correctly.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43409657036890,"sku":"BWCS-XMR156NB-1","price":70.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43409657069658,"sku":"BWCS-XMR156NB-2","price":82.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43409657102426,"sku":"BWCS-XMR156NB-3","price":91.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-XMR156NB-1.webp?v=1779580359","url":"https:\/\/batteryweb.com\/products\/xiaomi-mi-ruby-156-replacement-battery-154v-2500mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}