{"product_id":"viewsonic-zoompad-replacement-battery-37v-3200mah-li-polymer","title":"ViewSonic Zoompad MLP486890 Compatible Battery 3.7V 3200mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eViewSonic Zoompad — 3.7V Li-Polymer Replacement Battery (MLP486890)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V 3200mAh Li-Polymer battery for the ViewSonic Zoompad tablet. It replaces part number MLP486890 when the original cell no longer holds a usable charge. Capacity matches the factory specification at 11.84Wh.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eZoompad platform fit:\u003c\/strong\u003e\n    The Zoompad uses a single-cell Li-Polymer pack with a specific connector pinout and BMS handshake tied to the charge IC on the motherboard. This battery matches that voltage rail and connector so the charge controller accepts it without a fault state.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through charge and discharge on a Zoompad unit. The BMS reported clean voltage curves, no overcurrent trips, and the charge IC accepted the cell from the first connection.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge calibration after swap:\u003c\/strong\u003e\n    After fitting this battery, run the tablet down to automatic shutoff, then charge uninterrupted to 100% without using the device. This single full cycle resets the fuel gauge IC calibration against the new cell and clears the inaccurate percentage readings that appear immediately after installation.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eZoompad shutting down at 15–25% battery remaining\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe Zoompad's combined display and WiFi load draws a current spike that can pull cell voltage below the BMS cutoff threshold before the fuel gauge hits zero. This happens most often when the fuel gauge IC is calibrated to a worn cell and misreads actual capacity on a new one. The result is a hard shutdown even though the percentage counter shows charge remaining. One full discharge-to-shutoff cycle followed by an uninterrupted charge to 100% realigns the IC — after that, the shutoff point should track correctly down to around 3.4V.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eFast charging not available after battery replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eSome Zoompad units use a proprietary charge negotiation handshake between the charge IC and the battery BMS. On the first cycle after a swap, the charge controller may default to standard 5V charging while it verifies the new cell parameters. This is not a fault — the IC is validating voltage response before stepping up charge current. Complete one full charge cycle using the original ViewSonic charger and the fast charge profile typically resumes from the second cycle onward.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43426080981082,"sku":"BWCS-VER486SL-1","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43426081013850,"sku":"BWCS-VER486SL-2","price":30.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43426081046618,"sku":"BWCS-VER486SL-3","price":33.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-VER486SL-1.webp?v=1779930340","url":"https:\/\/batteryweb.com\/products\/viewsonic-zoompad-replacement-battery-37v-3200mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}