{"product_id":"nintendo-hac-s-jpeu-c0-replacement-battery-385v-4300mah-li-polymer","title":"Nintendo Switch HAC-003 Compatible Battery 3.85V 4300mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eNintendo Switch HAC-001 \/ HAC-S-JP\/EU-C0 — 3.85V Li-Polymer Replacement Battery (HAC-003)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.85V, 4300mAh (16.55Wh) Li-Polymer cell replaces the original HAC-003 battery inside the Nintendo Switch console. It fits both the original HAC-001 and the HAC-S-JP\/EU-C0 hardware revisions. Install it when the console no longer holds a charge through a handheld play session or fails to power on at all.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eHAC-001 and HAC-S-JP\/EU-C0 compatibility:\u003c\/strong\u003e\n    Both Switch hardware revisions use the same battery bay dimensions, connector pinout, and BMS communication protocol — so this single cell fits either board without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We seated this cell in a HAC-001 unit, confirmed BMS handshake on first boot, and watched the charge IC step through its constant-current and constant-voltage phases cleanly to termination with no fault flags.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge calibration on first use:\u003c\/strong\u003e\n    After installation, run one complete handheld session to automatic low-battery cutoff before recharging. The Switch fuel gauge IC sets its empty reference point against the first full discharge cycle — skipping this step produces inaccurate percentage readings from day one.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Switch fuel gauge jumps or reads incorrectly after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe Switch uses a gas-gauge IC that tracks charge by counting coulombs against a stored discharge curve learned from the original cell. A new cell has a different internal resistance profile, so the IC's stored curve no longer matches reality. Until the IC re-learns the new cell's behaviour across at least one full discharge cycle, it interpolates against stale data and the percentage display jumps — often from 40% to 5% with no warning. One complete discharge-to-cutoff followed by a full charge resets the reference and stabilises the readout.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eConsole shuts down before the battery indicator hits empty\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the cell's resting voltage drops sharply under the combined load of the display, SoC, and wireless radio — faster than the fuel gauge can track. The BMS hits its low-voltage cutoff threshold before the percentage display reaches zero. It is common in the first three to five charge cycles on a new cell before the electrodes are fully conditioned. After conditioning cycles, internal resistance drops, voltage sag flattens, and the console reaches cutoff at a percentage much closer to 0%.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43377538367578,"sku":"BWCS-NTS001XL-1","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43377538400346,"sku":"BWCS-NTS001XL-2","price":30.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43377538433114,"sku":"BWCS-NTS001XL-3","price":33.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-NTS001XL_1.webp?v=1778767243","url":"https:\/\/batteryweb.com\/products\/nintendo-hac-s-jpeu-c0-replacement-battery-385v-4300mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}