{"product_id":"qianxun-q600-gnss-replacement-battery-74v-3400mah-li-ion","title":"Qianxun Q600 GNSS Compatible Battery 7.4V 3400mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eQianxun Q600 GNSS — 7.4V Li-ion Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 7.4V 3400mAh (25.16Wh) Li-ion battery replaces the internal pack in the Qianxun Q600 GNSS receiver. The Q600 is a portable satellite positioning unit used in surveying, mapping, and geospatial data collection. This replacement keeps the receiver running through full field sessions without returning to base for a charge swap.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eQ600 GNSS receiver fit:\u003c\/strong\u003e\n    The Q600 runs a 7.4V two-cell Li-ion architecture. The BMS in this pack matches the voltage thresholds and communication handshake that the Q600 firmware expects. Fit the wrong cell count or voltage rail and the receiver refuses to boot.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this pack through the Q600's satellite acquisition sequence, which pulls a sharp current spike as the RF front-end and antenna initialise. The BMS held without tripping and held voltage above the receiver's operating floor under sustained multi-constellation tracking load.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePre-deployment calibration cycle:\u003c\/strong\u003e\n    After fitting, run a full system calibration through the Q600 menu before heading to site. The receiver maps battery state during that sequence. Skip it and the low-battery warning triggers early on the first field session, even with a full charge.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBMS cutoff when the Q600 antenna initialises in cold conditions\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eCold cells — below around 5°C — show elevated internal resistance before they warm under load. When the Q600 powers up, the RF module and antenna circuitry pull a combined inrush current that a cold, depleted pack cannot supply cleanly. The BMS reads this as an overcurrent event and cuts output before the receiver finishes its boot sequence. Warm the battery to room temperature before powering on in sub-zero conditions, and ensure the pack is above 3.6V per cell before the first cold-weather start.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eQ600 won't recognise the pack after sitting unused for several months\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-ion cells self-discharge during storage. If the pack drops below roughly 2.5V per cell, the BMS enters a protection state and blocks charge input — the Q600 sees no battery at all, or shows a fault icon on screen. Connect the pack to the charger and hold it there for at least 30 minutes. Most chargers apply a low-current recovery pulse that nudges the cell voltage back above the BMS wake threshold. Once it clears 3.0V per cell, normal charging resumes.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43360511688794,"sku":"BWCS-TOX110XL-1","price":87.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43360511721562,"sku":"BWCS-TOX110XL-2","price":103.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43360511754330,"sku":"BWCS-TOX110XL-3","price":115.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-TOX110XL-1.webp?v=1778615963","url":"https:\/\/batteryweb.com\/products\/qianxun-q600-gnss-replacement-battery-74v-3400mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}