{"product_id":"i-tec-smart-window-replacement-battery-37v-3350mah-li-ion","title":"I-TEC Smart Window Replacement Battery 3.7V 3350mAh Li-ion","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eI-TEC Smart Window — 3.7V Li-ion Replacement Battery (ICR18650-1S1P)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V, 3350mAh Li-ion cell replaces the ICR18650-1S1P battery in I-TEC Smart Window controllers. These controllers manage electronic light transmission and thermal regulation in home automation setups. When the original cell degrades, the window loses responsiveness or drops off the automation network entirely.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSmart Window controller fit:\u003c\/strong\u003e\n    I-TEC Smart Window units run a single-cell 3.7V architecture with a BMS that monitors cell voltage directly. This 18650-format cell matches that voltage rail and physical footprint exactly — 68.60 × 18.60 × 18.60mm — so no adapters or wiring changes are 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 and discharge on a 3.7V single-cell BMS rig. The protection circuit responded correctly to overcurrent and low-voltage cutoff thresholds. Cell voltage held stable across the expected operating band.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install reconnect window:\u003c\/strong\u003e\n    After swapping the cell, wait at least 60 seconds before expecting the controller to respond. Smart window controllers run a mesh network re-join sequence after any power interruption — triggering commands before that sequence completes can cause the device to appear unresponsive.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSmart Window controller going offline after battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eAfter a battery replacement, the controller loses its live connection to the hub and must re-establish it. This is a normal mesh re-join sequence, not a fault. The device broadcasts a re-join request, and the hub acknowledges it — this exchange typically completes within 60 seconds. If the device stays offline past that window, power-cycle the hub to prompt a fresh acknowledgment.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLow battery alert showing immediately after fitting a new cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA new cell stored for several months can sit below the alert threshold the hub uses — often around 3.5V. The controller reads cell voltage at startup and flags anything under that threshold regardless of whether the cell is new. Connect the controller to its charger for a full charge cycle before dismissing the alert. Once the cell reaches 4.2V, the hub will update the battery status on its next polling interval.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416141955162,"sku":"BWCS-ITM324XL-1","price":42.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416141987930,"sku":"BWCS-ITM324XL-2","price":49.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416142020698,"sku":"BWCS-ITM324XL-3","price":55.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-ITM324XL-1.webp?v=1779760467","url":"https:\/\/batteryweb.com\/products\/i-tec-smart-window-replacement-battery-37v-3350mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}