{"product_id":"rea-card-rea-t6-flex-replacement-battery-37v-3400mah-li-ion","title":"REA CARD Rea T6 Flex Compatible Battery 3.7V 3400mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eREA CARD Rea T6 Flex — 3.7V Li-ion Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V 3400mAh Li-ion battery replaces the original cell in the REA CARD Rea T6 Flex payment terminal. It fits the Rea T6 Flex portable card reader used at point-of-sale locations. Voltage and capacity match the original spec exactly — 3.7V, 3400mAh (12.58Wh).\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eRea T6 Flex fit:\u003c\/strong\u003e\n    The T6 Flex uses a single-cell Li-ion pack at 3.7V nominal. The terminal's charge IC and BMS handshake are matched to this cell voltage and capacity class. Swapping to an incorrect voltage will prevent the PCI boot sequence from completing.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this battery through charge and discharge on a cell analyser and monitored BMS cutoff thresholds. The protection circuit tripped correctly at both ends — no undervoltage or overvoltage events during testing.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst deployment tip:\u003c\/strong\u003e\n    After installation, complete one full transaction cycle before putting the terminal into live service. The Rea T6 Flex maps battery capacity during normal operation and needs at least one complete power cycle to calibrate the charge indicator correctly.\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\n  \u003cp class=\"bpw-desc-p\"\u003eThe Rea T6 Flex runs a PCI security boot check on every power-on. If the battery voltage sits below roughly 3.5V when the terminal first starts, the boot sequence can stall or loop before reaching the home screen. A new cell shipped at storage charge — typically 3.6–3.7V — can sit right at that threshold. Plug the terminal into its charger for 15–20 minutes before the first boot, then power on. That brings the cell above the minimum voltage the PCI firmware expects to see.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eTerminal reboots mid-transaction during receipt printing\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe receipt printer motor draws a short current spike — often 0.8–1.2A — on top of the display and wireless radio load already running. If the battery cell is degraded or the BMS overcurrent threshold is set conservatively, that combined spike can trip a protective cutoff and reboot the terminal. On a fresh replacement battery, this usually points to a loose battery connector rather than a cell fault — reseat the connector and confirm contact pressure. If the reboot persists, check that the terminal firmware has completed its first full charge-discharge calibration cycle, as an uncalibrated state can cause the BMS to misread current draw.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43415935189082,"sku":"BWCS-IML220HL-1","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43415935221850,"sku":"BWCS-IML220HL-2","price":28.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43415935254618,"sku":"BWCS-IML220HL-3","price":31.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-IML220HL-1.webp?v=1779758085","url":"https:\/\/batteryweb.com\/products\/rea-card-rea-t6-flex-replacement-battery-37v-3400mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}