{"product_id":"wizarpos-wizar-q2-replacement-battery-74v-3400mah-li-ion","title":"WizarPOS Wizar Q2 Replacement Battery 7.4V 3400mAh WHB02-2600","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eWizarPOS Wizar Q2 — 7.4V Li-ion Replacement Battery (WHB02-2600)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 7.4V Li-ion battery replaces the original WHB02-2600 unit in the WizarPOS Wizar Q2 portable payment terminal. Capacity is 3400mAh (25.16Wh). The 6-pin connector matches the OEM footprint exactly — no modification needed.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eWizar Q2 platform fit:\u003c\/strong\u003e\n    The Q2 uses a 6-pin interface that carries both power and BMS communication. This battery uses the same pin assignment, so the terminal's charge controller and fuel gauge read cell state correctly from first boot.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran the battery through a full boot cycle on a Wizar Q2 unit, triggered the receipt printer motor, and confirmed the BMS held the voltage rail without tripping overcurrent cutoff during the printer's start surge.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-use cycle on the Q2:\u003c\/strong\u003e\n    After installation, complete one full transaction — including a print — before deploying the terminal on a live counter. The Q2 maps battery capacity during normal operation, and the charge indicator won't read accurately until at least one complete power cycle has finished.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eTerminal rebooting mid-transaction after a battery swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe Wizar Q2 receipt printer draws a short high-current spike when the motor starts. If the BMS on a new cell hasn't yet mapped its internal resistance, it can read that spike as an overcurrent event and trip the protection circuit — cutting power mid-sale. This isn't a faulty battery. Run two or three test transactions without customers present to let the BMS settle its overcurrent threshold. After that calibration window, the terminal handles the printer surge without interruption.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eTerminal not completing PCI boot sequence after sitting unused\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA Wizar Q2 left in a drawer for several months can self-discharge below the PCI boot threshold — typically under 3.0V per cell. At that voltage, the terminal's security processor won't complete its startup handshake and the screen stays dark or loops. Connect the terminal to the OEM charger and leave it for at least 90 minutes before attempting to power on. Once the cell climbs above 3.2V per cell (6.4V total), the boot sequence should complete normally.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43415924768858,"sku":"BWCS-NEX800BX-1","price":49.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43415924801626,"sku":"BWCS-NEX800BX-2","price":58.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43415924834394,"sku":"BWCS-NEX800BX-3","price":64.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-NEX800BX-1.webp?v=1779757951","url":"https:\/\/batteryweb.com\/products\/wizarpos-wizar-q2-replacement-battery-74v-3400mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}