{"product_id":"flir-si124-replacement-battery-108v-3400mah-li-ion","title":"FLIR Si124 Thermal Camera Replacement Battery 10.8V 3400mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eFlir Si124 Series — 10.8V Li-ion Replacement Battery (T912185)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 10.8V, 3400mAh Li-ion replacement battery for the Flir Si124, Si124-PD, and Si124-LD acoustic imaging cameras. It replaces OEM part T912185 and fits the original battery bay without modification. The Si124 platform runs on-site electrical, mechanical, and building surveys where battery failure mid-session means lost data and repeat site visits.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSi124, Si124-PD, and Si124-LD compatibility:\u003c\/strong\u003e\n    All three variants share the same 10.8V battery bay, connector pinout, and BMS communication protocol. A single cell pack covers the full Si124 product line without adapter or firmware change.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this pack through power-on, live acoustic imaging, and USB data transfer simultaneously. The BMS held voltage stable across the combined load and did not trip at sensor initialisation.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-use calibration on the Si124:\u003c\/strong\u003e\n    After fitting this battery, run a full calibration cycle through the Si124 instrument menu before going to site. The camera maps battery state during calibration — skipping this step causes premature low-battery warnings during your first imaging session, even when the pack is fully charged.\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 Si124 initialises its acoustic sensor array\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eWhen the Si124 powers up, the MEMS microphone array draws a short current spike as each sensor initialises. An aged or low-state-of-charge battery can dip below the BMS undervoltage threshold during this spike, causing an immediate shutdown before the home screen loads. This is a protection trip, not a dead battery. Charge the pack to full before attempting power-on, and the BMS will clear the condition automatically.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSi124 display showing inconsistent battery percentage after swapping to a new pack\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Si124 tracks battery state against a learned voltage curve from the previous cell. A new pack with different internal resistance reads differently at the same open-circuit voltage, so the percentage indicator appears to jump or reset between boots. This is not a fault with the battery or camera. Run two full charge and discharge cycles through normal imaging work, and the camera recalibrates its voltage-to-percentage mapping. After the second cycle, the display stabilises.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43360453820506,"sku":"BWCS-FBP290SL-1","price":403.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43360453853274,"sku":"BWCS-FBP290SL-2","price":483.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43360453886042,"sku":"BWCS-FBP290SL-3","price":542.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-FBP290SL-1.webp?v=1778614684","url":"https:\/\/batteryweb.com\/products\/flir-si124-replacement-battery-108v-3400mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}