{"product_id":"zebra-wt41n0-replacement-battery-37v-2200mah-li-ion","title":"Zebra WT41N0 Replacement Battery 3.7V 2200mAh Li-ion","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eZebra WT41N0 \/ WT4090 \/ WT4000 — 3.7V Li-ion Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V 2200mAh Li-ion battery fits the Zebra WT41N0, WT4090, and WT4000 wearable mobile computers. These devices run in warehouse pick-and-pack lines, logistics hubs, and retail stockrooms where the battery takes constant, repetitive load from barcode scanning and wireless communication. Capacity is 8.14Wh — matched to the original cell specification for these units.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eWT41N0, WT4090, WT4000 platform fit:\u003c\/strong\u003e\n    All three models share the same battery bay geometry, 3.7V nominal rail, and BMS communication protocol. A single cell design covers the platform without requiring different connectors or firmware handshake adjustments.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this pack through charge and discharge cycles on WT41N0 hardware. The BMS accepted the cell without fault codes, balanced the charge correctly, and the device reported accurate state-of-charge throughout the cycle.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-shift prep for pick-and-pack use:\u003c\/strong\u003e\n    After installing, seat the scanner in its charging cradle and run a full charge cycle before the first shift. Scan trigger inrush current peaks when the cell is near minimum — a fully charged pack prevents false BMS trips when the trigger is hammered hard in the first hour of use.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the WT41N0 drops its wireless connection during rapid scan bursts\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe WT41N0 fires both the imager and the 802.11 radio simultaneously during active scanning. That combined draw creates a current spike that a degraded or low cell struggles to sustain above the BMS undervoltage threshold. When the cell voltage sags below that threshold mid-burst, the BMS cuts output momentarily — the radio drops its access point association and the scan misses the acknowledgment. A fresh cell at full charge holds the voltage rail stable through those combined spikes and keeps both the imager and radio live.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eCradle showing a charging error immediately after installing a new pack\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis error almost always comes from contact resistance at the battery terminals, not a fault in the cell. Dock contacts and battery gold pads accumulate oxidation and debris in active warehouse environments, and even a thin layer adds enough resistance that the cradle's charge controller reads an abnormal handshake. Pull the battery, wipe the gold contacts on both the pack and the dock with a dry lint-free cloth, reseat firmly, and check that the pack clicks into the locking tab. If the error clears, the cell is fine — if it persists after clean contacts, check the cradle voltage output at the terminals, which should read 4.2V under no-load.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43324968271962,"sku":"BWCS-ET4090BL-1","price":33.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43324968304730,"sku":"BWCS-ET4090BL-2","price":38.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43324968337498,"sku":"BWCS-ET4090BL-3","price":42.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-ET4090BL_1.webp?v=1778123427","url":"https:\/\/batteryweb.com\/products\/zebra-wt41n0-replacement-battery-37v-2200mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}