{"product_id":"cat-s60-replacement-battery-385v-3500mah-li-polymer","title":"CAT S60 Replacement Battery 3.85V 3500mAh APP-12F-F5757I-CGX-111","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eCAT S60 — 3.85V Li-Polymer Replacement Battery (APP-12F-F5757I-CGX-111)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.85V, 3500mAh Li-Polymer cell that replaces the original battery in the CAT S60 rugged smartphone. It matches OEM part APP-12F-F5757I-CGX-111 and fits the S60 directly. Capacity is 13.48Wh, identical to the factory spec.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCAT S60 fit:\u003c\/strong\u003e\n    The S60 runs a single-cell Li-Polymer pack at 3.85V nominal. This cell matches that voltage rail, the physical footprint (57.32 × 56.56 × 7.20mm), and the connector orientation. No modifications needed.\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 discharge, and a second charge on the S60. The BMS accepted the cell without error flags, and the charge IC completed a full cycle without thermal shutdown.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    After installation, disable fast charging and run one complete discharge-to-charge cycle at standard rate. This lets the fuel gauge IC map the new cell's discharge curve before high-current charging pushes current into an uncalibrated state.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% on the CAT S60 after a cell swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe S60's fuel gauge IC stores a learned discharge curve from the old cell. When a new cell goes in, the stored curve no longer matches real cell voltage under load. Under modem transmit or screen-on load, the new cell's voltage drops faster than the IC expects, triggering an emergency cutoff even when the reported percentage looks safe. One full slow discharge-charge cycle forces the coulomb counter to rebuild its reference map against the new cell. After that cycle, shutdowns at 20–30% typically stop.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eCAT S60 not powering on after a replacement battery sat in storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-Polymer cells self-discharge in storage. If the cell voltage drops below approximately 2.5V per cell, the BMS latches into a protection lockout and blocks all output. The phone sees no voltage and will not respond to the power button. Connect the phone to a wall charger — not a USB hub — and leave it for 15 to 20 minutes before attempting to power on. The charge IC applies a trickle current that slowly raises cell voltage above the BMS unlock threshold, typically around 2.8V, at which point the BMS re-enables output and the phone boots normally.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43392014057562,"sku":"BWCS-CAS600SL-1","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43392014090330,"sku":"BWCS-CAS600SL-2","price":29.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43392014123098,"sku":"BWCS-CAS600SL-3","price":32.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-CAS600SL-1.webp?v=1779142903","url":"https:\/\/batteryweb.com\/products\/cat-s60-replacement-battery-385v-3500mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}