{"product_id":"spectra-tsc7-replacement-battery-74v-3100mah-li-ion","title":"Spectra TSC7 Replacement Battery 7.4V 3100mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSpectra TSC7 — 7.4V Li-ion Replacement Battery (121300)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 7.4V 3100mAh Li-ion battery that replaces OEM part 121300 in the Spectra TSC7 mobile data collector. The TSC7 is a field survey instrument used for GPS data logging and construction layout work. It draws continuous power through GPS, sensors, and display — all running from a single battery pack.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTSC7 platform fit:\u003c\/strong\u003e\n    The TSC7 uses a 7.4V two-cell Li-ion pack with a specific connector and BMS handshake. This replacement matches that cell configuration and communicates correctly with the instrument's power management circuit.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this pack under combined GPS acquisition and display load. The BMS held stable through sensor initialisation spikes and sustained logging sessions without tripping cutoff.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-deployment calibration:\u003c\/strong\u003e\n    After installing this battery, run a full calibration cycle through the TSC7 instrument menu before heading into the field. The instrument maps battery state during calibration — skipping this step causes premature low-battery warnings on the first measurement session.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eTSC7 shutting down mid-measurement despite showing charge remaining\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe TSC7 combines GPS receiver, cellular or Bluetooth radio, and a high-brightness display — all drawing simultaneously during active survey work. This combined load can pull the pack voltage below the BMS cutoff threshold even when the display shows remaining charge. A degraded original battery can't sustain the current spike when a secondary sensor or radio initialises on top of baseline load. A fresh pack rated at the correct cell voltage handles these stacked draws without the voltage sag that triggers shutdown.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eTSC7 not recognising a replacement pack after the instrument sat unused for months\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA pack stored in a carry case for several months can self-discharge below the BMS recovery threshold — typically around 2.5V per cell. When this happens, the TSC7 may not detect the battery or refuse to power on at all. Connect the battery to a charger that supports Li-ion recovery or pre-charge mode before inserting it into the instrument. Once the pack reaches approximately 3.0V per cell, the BMS wakes and the instrument will recognise it normally.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43360455327834,"sku":"BWCS-TRS700SL-1","price":143.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43360455360602,"sku":"BWCS-TRS700SL-2","price":171.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43360455393370,"sku":"BWCS-TRS700SL-3","price":191.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-TRS700SL-1.webp?v=1778615901","url":"https:\/\/batteryweb.com\/products\/spectra-tsc7-replacement-battery-74v-3100mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}