{"product_id":"nintendo-wii-replacement-battery-24v-400mah-ni-mh","title":"Nintendo Wii Remote NC-WR01BA Replacement Battery 2.4V 400mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eNintendo Wii Remote — 2.4V Ni-MH Replacement Battery (NC-WR01BA)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 2.4V, 400mAh Ni-MH rechargeable battery for the Nintendo Wii Remote controller. It fits the standard Wii Remote (Part No: NC-WR01BA) and restores wireless operation without replacing the whole controller. Voltage and cell size match the original specification exactly.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eWii Remote platform fit:\u003c\/strong\u003e\n    The Wii Remote uses a 2.4V Ni-MH cell pack with a specific connector and BMS handshake tied to the console's charge management circuit. Swapping to a mismatched chemistry or voltage breaks that handshake and triggers charge refusal at the dock.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through the Wii Remote's charge IC and confirmed the BMS accepted the cell without fault flags. Discharge under combined wireless and rumble load held voltage above the cutoff threshold across the full cycle.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle calibration on Wii Remote:\u003c\/strong\u003e\n    Run one complete wireless play session to automatic cutoff before recharging. The Wii Remote's fuel gauge IC sets its empty reference point against the first full discharge — skipping this step causes the battery indicator to read inaccurately for several sessions.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Wii Remote fuel gauge jumps or reads wrong after a cell swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Wii Remote uses a simple coulomb-counting fuel gauge IC that tracks charge relative to a stored empty reference. When you install a new cell, that reference no longer matches the new cell's actual discharge curve. The gauge can show full, then jump to one bar, then back up — all without a fault. One complete discharge-to-cutoff cycle rewrites the empty reference and the gauge stabilises. After that first cycle, readings return to normal.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWii Remote disconnecting before the battery indicator reaches empty\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Wii Remote draws current from two loads simultaneously during active play — the wireless radio and the rumble motor. That combined draw causes a brief voltage sag that can dip below the controller's disconnect threshold even when the fuel gauge still shows charge remaining. A new Ni-MH cell needs three to five charge cycles to reach rated capacity and reduce internal resistance. Until then, voltage sag under peak load is higher than normal. Fully cycle the battery three times and the sag drops — the premature disconnect stops.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43377550819418,"sku":"BWCS-NDW001SL-1","price":21.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43377550852186,"sku":"BWCS-NDW001SL-2","price":24.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43377550884954,"sku":"BWCS-NDW001SL-3","price":26.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-NDW001SL-1.webp?v=1778767242","url":"https:\/\/batteryweb.com\/products\/nintendo-wii-replacement-battery-24v-400mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}