{"product_id":"apple-ipad-3-replacement-battery-37v-11500mah-li-polymer","title":"Apple iPad 3 Replacement Battery 3.7V 11500mAh 616-0586","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eApple iPad 3 — 3.7V Li-Polymer Replacement Battery (616-0586)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 11500mAh lithium-polymer battery for the Apple iPad 3 and iPad 3 HD Wi-Fi. It replaces OEM part numbers 616-0586, 616-0604, A1389, and related variants. It fits models including MD510LL\/A and MD513LL\/A, restoring power to the display, processor, and wireless radios.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eiPad 3 platform fit:\u003c\/strong\u003e\n    The third-generation iPad uses a specific connector pinout and BMS handshake tied to the 616-0586 family. All listed OEM part numbers share the same voltage rail and physical footprint — 196.50 × 125.78 × 3.95mm — so the cell seats correctly and the charge IC communicates without fault codes.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this battery through charge and discharge on an iPad 3 unit, monitoring BMS cutoff behaviour at both ends. The protection circuit triggered correctly at low-voltage threshold and accepted a full charge without thermal events or charge IC errors.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration after installation:\u003c\/strong\u003e\n    After fitting this battery, run one full discharge to automatic shutoff, then charge uninterrupted to 100%. The iPad 3 fuel gauge IC calibrates against the new cell during this cycle. Skipping it causes the OS to report inaccurate percentages for days.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the iPad 3 shuts down at 15–25% remaining after a battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe iPad 3 draws a combined load from the Retina display and Wi-Fi radio that spikes current well above standby draw. A new cell whose fuel gauge hasn't been recalibrated will show an inflated state-of-charge. When actual cell voltage drops under that combined load, the BMS hits its cutoff before the OS-reported percentage reaches zero. One full discharge-to-shutoff cycle followed by an uninterrupted charge gives the fuel gauge IC the data it needs to map voltage correctly against remaining capacity.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eiPad 3 percentage dropping faster than expected from 100% after replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis is fuel gauge drift — the IC is still using the discharge curve from the old, degraded cell. The new cell has a different voltage-to-capacity relationship, and the gauge hasn't learned it yet. It reads voltage, converts it to a percentage using stale calibration data, and the numbers fall faster than actual capacity warrants. Fix it with one complete cycle: drain to automatic shutoff, then charge to 100% without interruption. After that cycle the percentage tracking stabilises.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43426088747098,"sku":"BWCS-IPD300SL-1","price":46.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43426088779866,"sku":"BWCS-IPD300SL-2","price":54.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43426088812634,"sku":"BWCS-IPD300SL-3","price":60.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-IPD300SL-1.webp?v=1779930308","url":"https:\/\/batteryweb.com\/products\/apple-ipad-3-replacement-battery-37v-11500mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}