{"product_id":"powerspec-powerspec-1520-replacement-battery-111v-5400mah-li-ion","title":"Powerspec 1520 Replacement Battery 11.1V 5400mAh Li-ion","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003ePowerspec 1520 \/ 1720 — 11.1V Li-ion Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is an 11.1V, 5400mAh (59.94Wh) Li-ion battery for the Powerspec 1520 and Powerspec 1720 notebooks. It replaces a dead or degraded original cell and restores unplugged operation. Voltage, connector, and BMS communication match the OEM spec for both models.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003e1520 and 1720 compatibility:\u003c\/strong\u003e\n    Both models run the same 11.1V three-cell Li-ion battery rail with an identical connector and BMS handshake protocol. One replacement cell covers both platforms without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through charge, full load discharge, and BMS cutoff on a Powerspec 1520. The protection circuit tripped correctly at low-voltage threshold and charge termination hit 12.6V as expected.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install calibration on the Powerspec:\u003c\/strong\u003e\n    After fitting, run one full discharge to hibernate-cutoff, then charge uninterrupted to 100%. 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 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 poor battery health immediately after fitting a new cell\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe Powerspec BIOS stores battery health data from the previous cell in EEPROM. When a new cell goes in, the BIOS compares live readings against that stale data and flags the battery as degraded — even when the cell is brand new. This is not a fault with the replacement. One full discharge-to-hibernate followed by an uninterrupted charge to 100% triggers the learn cycle and rewrites the EEPROM reference values. After two or three cycles, the health indicator reads accurately.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePowerspec 1520 shutting down unexpectedly at 20–30% charge shown\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the fuel gauge IC has not yet calibrated against the new cell's actual voltage curve. The gauge reports 25% remaining while the cell voltage has already dropped below the safe operating threshold under full CPU and display load. The laptop shuts down to protect the cell, not because the battery is faulty. Run two full discharge-to-hibernate and full recharge cycles — after that, the fuel gauge IC recalibrates and the shutdown behaviour stops. Confirm the cell is charging to 12.6V at the termination point.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43409541333082,"sku":"BWCS-CLH571NB-1","price":88.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43409541365850,"sku":"BWCS-CLH571NB-2","price":104.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43409541398618,"sku":"BWCS-CLH571NB-3","price":115.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-CLH571NB-1.webp?v=1779579964","url":"https:\/\/batteryweb.com\/products\/powerspec-powerspec-1520-replacement-battery-111v-5400mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}