{"product_id":"wizarpos-q2-replacement-battery-74v-2600mah-li-ion","title":"WizarPOS Q2 Replacement Battery 7.4V 2600mAh WHB02","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eWizarPOS Q2 — 7.4V Li-ion Replacement Battery (WHB02-2600)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 7.4V, 2600mAh Li-ion battery for the WizarPOS Q2 portable payment terminal. It uses the original 5-pin connector and replaces part number WHB02-2600. Merchants use it when the original cell degrades and the terminal can no longer sustain a full business day of transactions.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eQ2 and Wizar Q2 compatibility:\u003c\/strong\u003e\n    Both model names reference the same hardware platform. The 5-pin connector carries power lines and a BMS communication line — the terminal's firmware handshakes with the battery controller on boot. A mismatched connector or missing pin will stop the terminal from powering on entirely.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this battery through repeated simulated transaction loads — display on, NFC active, printer firing — and monitored the BMS response. The overcurrent protection tripped correctly on fault conditions and reset cleanly without locking out the terminal.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-deployment cycle:\u003c\/strong\u003e\n    After installing this battery, complete one full transaction cycle before putting the terminal into a live checkout environment. The Q2 maps battery capacity during normal operation and needs at least one complete power cycle to calibrate the charge indicator accurately.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eTerminal not completing PCI boot sequence after battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe WizarPOS Q2 runs a PCI-compliant boot sequence that includes a BMS handshake before the OS fully loads. On a new battery, the BMS may not yet have an accepted charge profile stored, which causes the boot sequence to stall or loop. This is not a fault with the battery — it resolves after the terminal completes one full charge-to-discharge cycle. Let the terminal boot on mains power first, complete a normal session, then run on battery alone until the charge indicator drops noticeably before recharging.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eCharge indicator stuck at 99% after first charge\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eOn a fresh cell, the Q2's charge IC enters a top-off phase that holds the display reading at 99% for an extended period. The cell is still charging — the IC is applying a low-current trickle to bring each cell to full voltage before declaring a 100% state. This is normal behaviour and not a sign of a faulty battery. Once the top-off phase completes, the indicator will step to 100% and the terminal will switch to standby draw.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43415935877210,"sku":"BWCS-NEP8210BL-1","price":30.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43415935909978,"sku":"BWCS-NEP8210BL-2","price":35.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43415935942746,"sku":"BWCS-NEP8210BL-3","price":38.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-NEP8210BL-1.webp?v=1779758086","url":"https:\/\/batteryweb.com\/products\/wizarpos-q2-replacement-battery-74v-2600mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}