{"product_id":"caterpillar-cat-s22-replacement-battery-37v-1400mah-li-ion","title":"CAT S22 BTE-2000 Replacement Battery 3.7V 1400mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eCATERPILLAR CAT S22 \/ S22 Flip — 3.7V Li-ion Replacement Battery (BTE-2000)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 1400mAh Li-ion replacement battery for the CAT S22 and CAT S22 Flip rugged smartphones. It uses the OEM part number BTE-2000 and fits both flip and standard variants of the S22 platform. Capacity is 5.18Wh, matching the original cell specification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eS22 and S22 Flip platform fit:\u003c\/strong\u003e\n    Both models share the same battery bay geometry, connector pinout, and BMS handshake protocol — one cell works across both variants without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this battery on an S22 unit and confirmed the BMS accepted the new cell, cleared fault flags, and began charge acceptance without requiring a manual reset.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first cycle:\u003c\/strong\u003e\n    On first use after installation, disable fast charging and run one full discharge-to-charge cycle. This lets the fuel gauge IC map the new cell's discharge curve before high-current charging pushes current into an uncalibrated register.\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 S22 after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe CAT S22 shuts down before the displayed percentage hits zero because the fuel gauge IC is still using the old cell's voltage-to-capacity curve. A fresh cell has a steeper voltage cliff under modem and screen load than a worn cell — the phone interprets that voltage drop as a hard cutoff. This is not a fault with the replacement battery. One complete discharge cycle down to automatic shutdown, followed by a full charge, forces the coulomb counter to resync against the new cell's actual discharge profile.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eDevice not powering on after the BTE-2000 sat in storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-ion cells ship in a partial state of charge and continue self-discharging in storage. If the cell voltage drops below 2.5V, the BMS enters lockout mode and will not pass current to the device. Connect the phone to a wall charger — not a USB port — and leave it for 20–30 minutes before attempting to power on. Most BMS circuits will begin trickle-charging the cell back above the 2.5V threshold and exit lockout automatically.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43391819382874,"sku":"BWCS-CAS220SL-1","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43391819415642,"sku":"BWCS-CAS220SL-2","price":28.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43391819448410,"sku":"BWCS-CAS220SL-3","price":31.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-CAS220SL-1.webp?v=1779142264","url":"https:\/\/batteryweb.com\/products\/caterpillar-cat-s22-replacement-battery-37v-1400mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}