{"product_id":"fujitsu-amilo-li3710-replacement-battery-111v-4400mah-li-ion","title":"Fujitsu Amilo Li3710 Replacement Battery 11.1V 4400mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eFujitsu Amilo Li3710 \/ Li3910 \/ Pi3560 — 11.1V Li-ion Replacement Battery (SQU-809-F01)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is an 11.1V, 4400mAh (48.84Wh) Li-ion replacement battery for the Fujitsu Amilo Li3710, Amilo Li3910, and Amilo Pi3560 laptops. It cross-references OEM part numbers SQU-809-F01, SQU-808-F01, SQU-808-F02, and 3UR18650-2-T0182, among others. If your original battery no longer holds a practical charge, this cell uses the same voltage rail and connector as the factory unit.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAmilo Li3710, Li3910, and Pi3560 compatibility:\u003c\/strong\u003e\n    All three models share the same 11.1V three-cell architecture, connector pinout, and BMS handshake protocol — so one cell covers the full platform without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through charge, full-discharge, and BMS communication checks. The protection circuit responded correctly to over-voltage and over-discharge thresholds, and the BIOS recognised the battery without error flags on first connection.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle calibration after install:\u003c\/strong\u003e\n    After fitting this battery, run one full discharge to the hibernate cutoff point, then charge uninterrupted to 100%. This forces the fuel gauge IC to re-learn the new cell's actual capacity and clears the inaccurate health warning that appears in the BIOS 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 Amilo Li3710 shuts down at 20–30% charge remaining\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe Amilo Li3710 pulls significant current when the CPU and display are both under full load. An aged or uncalibrated cell hits a voltage cliff — the open-circuit voltage looks acceptable, but under load it drops below the BMS cutoff threshold instantly. The laptop interprets this as a dead cell and triggers an immediate shutdown, even though the fuel gauge still shows charge remaining. After the first calibration cycle on a new cell, this symptom disappears because the gauge IC now knows the true usable voltage range of the replacement chemistry.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBIOS reporting battery health as \"poor\" or \"unknown\" after fitting a new cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Amilo BIOS reads health data from EEPROM registers that were written by the original factory cell during its first cycles. A new cell ships with default or blank EEPROM values, which the BIOS flags as degraded or unrecognised. This is not a fault with the replacement — it is stale EEPROM data from the old cell being compared against a blank register. Run one full discharge-to-hibernate followed by an uninterrupted full charge; by the second cycle the BIOS battery learn routine overwrites the old register values and the health warning clears.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43410798444634,"sku":"BWCS-FU3710NB-1","price":73.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43410798477402,"sku":"BWCS-FU3710NB-2","price":85.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43410798510170,"sku":"BWCS-FU3710NB-3","price":94.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-FU3710NB-1.webp?v=1779581142","url":"https:\/\/batteryweb.com\/products\/fujitsu-amilo-li3710-replacement-battery-111v-4400mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}