{"product_id":"fuhu-nabi-jr-replacement-battery-37v-2350mah-li-polymer","title":"Fuhu Nabi JR Replacement Battery 3.7V 2350mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eFuhu Nabi JR \/ NABIJR-NV5A — 3.7V Li-Polymer Replacement Battery (PR-546268)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V, 2350mAh Li-Polymer battery replaces part number PR-546268 in the Fuhu Nabi JR children's tablet. It fits the NV5A and NABIJR-NV5A variants. The original cell degrades with repeated shallow cycles, which is common in kid-use devices that spend most of their life between 30% and 80%.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eNabi JR \/ NV5A platform fit:\u003c\/strong\u003e\n    The NV5A hardware shares one battery connector layout and a single BMS voltage rail across all Nabi JR variants. PR-546268 is the only cell that matches the physical footprint at 68.02 × 61.34 × 5.40 mm — no adapter or rewiring needed.\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 the NABIJR-NV5A board. The BMS accepted the new cell without fault codes, and the charge IC ramped to full without thermal events.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge reset after installation:\u003c\/strong\u003e\n    After fitting this battery, run the tablet down to automatic shutoff, then charge uninterrupted to 100% without interruption. This gives the fuel gauge IC a full voltage sweep against the new cell and clears the inaccurate percentage readings that appear immediately after a swap.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eNabi JR shutting down at 15–25% remaining\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Nabi JR combines display backlight and WiFi on the same power rail. Under that combined load, a worn cell hits a voltage cliff well above the BMS cutoff threshold, triggering a shutdown the OS reads as a low-battery event. The percentage shown at cutoff is not the true state of charge — it reflects where the old cell's voltage dropped below the rail minimum. A new cell holds voltage flatter under the same load, so the cliff moves much closer to 0%. Run one full calibration cycle after installation to reset where the fuel gauge IC maps that cutoff.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eNabi JR showing wrong battery percentage after replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe fuel gauge IC on the NV5A board learned the discharge curve of the original cell over hundreds of cycles. Drop in a new cell and the stored curve no longer matches actual cell voltage, so the OS reports incorrect percentages — often jumping or stalling at fixed values. This is not a fault with the replacement cell. Discharge the tablet fully to automatic shutoff, then charge to 100% in one uninterrupted session. After that single cycle the fuel gauge recalibrates against the new cell's curve and percentage readings stabilise.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43425989394522,"sku":"BWCS-NSB005SL-1","price":29.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43425989427290,"sku":"BWCS-NSB005SL-2","price":33.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43425989460058,"sku":"BWCS-NSB005SL-3","price":36.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-NSB005SL-1.webp?v=1779930025","url":"https:\/\/batteryweb.com\/products\/fuhu-nabi-jr-replacement-battery-37v-2350mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}