{"product_id":"att-trek-2-hd-replacement-battery-38v-4600mah-li-polymer","title":"AT\u0026T Trek 2 HD Replacement Battery 3.8V 4600mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eAT\u0026amp;T Trek 2 HD — 3.8V Li-Polymer Replacement Battery (Li3846T43P6hF07632)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.8V, 4600mAh lithium-polymer battery for the AT\u0026amp;T Trek 2 HD and Trek 2 HD LTE tablets. It replaces OEM part number Li3846T43P6hF07632. Capacity is rated at 17.48Wh, matching the original cell specification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTrek 2 HD and Trek 2 HD LTE compatibility:\u003c\/strong\u003e\n    Both tablet variants share the same battery bay dimensions, connector pinout, and BMS handshake protocol. The 149.30 × 75.60 × 2.80 mm cell seats flush in either chassis without modification.\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 Trek 2 HD hardware. The BMS accepted the cell without error flags, charge IC negotiated correctly, and voltage held steady across display-on and WiFi-active load states.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation calibration cycle:\u003c\/strong\u003e\n    After fitting this battery, run the tablet down to automatic shutoff, then charge uninterrupted to 100%. The fuel gauge IC on the Trek 2 HD calibrates against actual cell capacity during this cycle — skipping it causes the percentage indicator to read inaccurately against the new cell 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\"\u003eTablet shutting down between 15–25% after battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Trek 2 HD combines an active display with WiFi and LTE radios drawing current simultaneously. Under that combined load, voltage drops sharply near the low end of the charge curve. The fuel gauge IC — still calibrated to the old, degraded cell — hits its cutoff threshold earlier than expected with a fresh cell. Running one complete discharge-to-shutoff cycle forces the IC to remap the voltage curve against the new cell's actual capacity. After that cycle, shutdowns at 15–25% stop.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eFast charging unavailable on first use after replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Trek 2 HD's charge controller uses a USB-PD negotiation sequence that anchors to a profile established during the first accepted charge cycle. A brand-new cell hasn't completed that cycle, so the controller defaults to standard charge rates as a precaution. Connect the tablet to the original charger and allow one full, uninterrupted charge to 100%. After that first accepted cycle completes, USB-PD negotiation resumes and fast charging becomes available again.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43425872674906,"sku":"BWCS-ZTK880SL-1","price":29.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43425872707674,"sku":"BWCS-ZTK880SL-2","price":33.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43425872740442,"sku":"BWCS-ZTK880SL-3","price":36.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-ZTK880SL-1.webp?v=1779930025","url":"https:\/\/batteryweb.com\/products\/att-trek-2-hd-replacement-battery-38v-4600mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}