{"product_id":"apple-magic-keyboard-replacement-battery-376v-690mah-li-polymer","title":"Apple Magic Keyboard A1645 Replacement Battery 3.76V 690mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eApple Magic Keyboard (A1645) — 3.76V Li-Polymer Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.76V, 690mAh lithium-polymer battery fits the Apple Magic Keyboard and Magic Trackpad 2. It replaces OEM part A1645 when the original cell degrades and no longer holds a usable charge. Slim at 2.00mm thick, it fits the tightly packaged internal cavity without modification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMagic Keyboard and Magic Trackpad 2 compatibility:\u003c\/strong\u003e\n    Both devices share the A1645 cell format — same voltage rail, same connector pinout, same BMS handshake protocol. One part covers both peripherals in your setup.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through charge and discharge cycles on a Magic Keyboard unit. The BMS accepted charge from the Lightning port without fault flags, and the keyboard registered over Bluetooth without re-pairing.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eLightning port charging tip:\u003c\/strong\u003e\n    The Magic Keyboard charges through its Lightning port while in use — but only when the port cover is open and the cable is seated fully. A partial connection will show a charging icon yet deliver no current to the cell, leaving it flat by morning.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eKeyboard pairing lost after battery replacement\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eReplacing the A1645 cell causes a full power interruption. Some Mac hosts drop the Magic Keyboard from their known device list when Bluetooth power is lost completely. The keyboard does not always re-pair automatically on first power-up. To restore the connection, hold the power button for five seconds until the LED flashes, then re-pair via System Settings → Bluetooth.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eNew battery showing low charge warning immediately after install\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-polymer cells ship at a partial state of charge — typically 30–50% — for transport safety compliance. macOS reads cell voltage directly and may display a low battery alert straight after install. Connect the Lightning cable and charge to 4.2V (full) before drawing conclusions about cell health. The alert clears once the BMS reports a full charge cycle complete.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43377906319450,"sku":"BWCS-AM1645SL-1","price":43.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43377906352218,"sku":"BWCS-AM1645SL-2","price":51.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43377906384986,"sku":"BWCS-AM1645SL-3","price":56.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-AM1645SL-1.webp?v=1778773918","url":"https:\/\/batteryweb.com\/products\/apple-magic-keyboard-replacement-battery-376v-690mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}