{"product_id":"apple-macbook-pro-17-a1297-2009-version-replacement-battery-74v-11200mah-li-polymer","title":"Apple MacBook Pro 17\" A1309 Replacement Battery 7.4V 11200mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eApple MacBook Pro 17\" A1297 2009 Version — 7.4V Li-Polymer Replacement Battery (A1309)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 7.4V, 11200mAh (82.88Wh) Li-Polymer replacement battery for the Apple MacBook Pro 17\" A1297, 2009 version. It fits the MC226*\/A, MC226CH\/A, MC226J\/A, and related 2009 17-inch configurations sharing the A1309 part number. Install it when the original cell no longer holds a charge and the laptop has lost its portability.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eA1297 platform fitment:\u003c\/strong\u003e\n    The 2009 17-inch MacBook Pro uses a single fixed battery bay with a proprietary connector and BMS handshake tied to the A1309 cell pack. All MC226 variants share the same voltage rail and connector pinout, which is why one replacement SKU covers the full model range.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell on a 2009 A1297 chassis and confirmed the BMS handshake completed without error flags. The SMC recognised the cell, the charge circuit engaged correctly, and the fuel gauge IC began accepting data from the new pack.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install calibration on the A1297:\u003c\/strong\u003e\n    After fitting this battery, run the laptop on battery power until it reaches hibernate-cutoff — do not interrupt. Then charge uninterrupted to 100%. This forces the SMC to complete one full learn cycle against the new cell and clears the inaccurate health warnings that appear immediately after every cell swap on this model.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy macOS reports poor battery health right after fitting a new A1309 cell\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe A1297's System Management Controller stores learned capacity data from the previous cell in non-volatile memory. When a new cell goes in, the SMC compares live readings against that stale data and flags a health mismatch. This is not a fault with the replacement — it is a calibration gap. One full discharge-to-hibernate followed by an uninterrupted full charge resets the learn cycle. After that, the health indicator in System Information and coconutBattery will reflect the actual new cell capacity.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eMacBook Pro 17\" shutting down at 20–30% charge shown on the meter\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis symptom appears when the fuel gauge IC has not yet calibrated against the new cell's voltage curve. The displayed percentage does not match the actual remaining cell voltage, so the SMC triggers a protective shutdown before the display reading hits zero. The fix is to complete two to three full discharge-and-charge cycles without interruption. After calibration, the SMC cutoff and the displayed percentage will align — target a resting voltage of 8.2–8.4V at a true 100% charge on this 7.4V nominal pack.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43409792303194,"sku":"BWCS-AM1309NB-1","price":133.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43409792335962,"sku":"BWCS-AM1309NB-2","price":153.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43409792368730,"sku":"BWCS-AM1309NB-3","price":169.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-AM1309NB-1.webp?v=1779580871","url":"https:\/\/batteryweb.com\/products\/apple-macbook-pro-17-a1297-2009-version-replacement-battery-74v-11200mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}