{"id":52250,"date":"2024-02-17T02:04:04","date_gmt":"2024-02-17T02:04:04","guid":{"rendered":"https:\/\/freeflysystems.com\/?post_type=kb_article&#038;p=52250"},"modified":"2024-02-17T02:06:17","modified_gmt":"2024-02-17T02:06:17","slug":"sb007-sl8","status":"publish","type":"kb_article","link":"https:\/\/freeflysystems.com\/knowledge-base\/sb007-sl8","title":{"rendered":"Astro SB007 &#8211; SL8 Battery Incident"},"content":{"rendered":"<p><span style=\"font-weight: 400;\"><strong>Date Released<\/strong>:<\/span><span style=\"font-weight: 400;\"> Feb 15th, 2024<\/span><\/p>\n<p><span style=\"font-weight: 400;\"><strong>Subject<\/strong>:<\/span><span style=\"font-weight: 400;\"> SL8 Battery Incident<\/span><\/p>\n<p><span style=\"font-weight: 400;\"><strong>Effectivity<\/strong>:<\/span><span style=\"font-weight: 400;\"> Immediate<\/span><\/p>\n<p><span style=\"font-weight: 400;\"><strong>Required Action<\/strong>:<\/span><span style=\"font-weight: 400;\">\u00a0 None at this time &#8211; Alert<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><strong>INTRODUCTION<\/strong><\/p>\n<p><span style=\"font-weight: 400;\">On November 9th, 2023, a customer had an SL8 Battery malfunction and catch fire prior to a flight. The pilot noted that they plugged the SL8 into the Astro, the SL8 screen was non-functional, and tried to turn the battery on without success. The pilot then removed the battery from the aircraft and reconnected it to the aircraft. At this time he reported hearing sparking \/ arcing.\u00a0 He disconnected the battery and placed it safely away from the aircraft and the launch site where shortly after the battery had 1 or 2 cells vent and catch on fire.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">As of now, there are no required actions and customers are advised to continue normal SL4 \/ SL8 \/ Astro operations with extra attention paid to any battery faults or nonfunctional OLED screens.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><strong>BACKGROUND<\/strong><\/p>\n<p><span style=\"font-weight: 400;\">This is the context for the incident:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Batteries were charged the night before in a hotel room<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">They were charged to 100%<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">First flight of the morning was the incident flight<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Freefly has investigated our internal tracking for this pack serial number and completed an in depth review to determine the probable root cause of the issue. At this time we have not identified the most likely specific root cause.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">There have been 2 SL8 Battery issues recorded since Astro launch. Freefly has released Service Bulletins for each and will continue to update you if we gain additional information.<\/span><\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p><strong>DISCUSSION<\/strong><\/p>\n<p><span style=\"font-weight: 400;\">There are a few potential root causes we are investigating:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Over-voltage incident causing a component to fail and short the pack causing BMS to catch on fire<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">From Astro or accessories<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">From manufacturing<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">From charging<\/span><\/li>\n<\/ul>\n<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Cell balance circuit failure or balance wire short circuit<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Manufacturing error or defect in a PCBA<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Random and catastrophic failure of key component (TVS Diode, Regulator, etc)<\/span><\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p><strong>RECOMMENDATION<\/strong><\/p>\n<p><span style=\"font-weight: 400;\">At this time, there is no immediate action required from our customers. Continue to use best Lithium-Ion battery charging and storage safety practices.\u00a0\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">If you have any abnormal battery behavior during use, charging, or storage, please contact Freefly Support to provide information on the issue. As always, use best practices when charging and handling batteries.\u00a0 And store them in a safe place, away from living spaces and flammable materials.\u00a0\u00a0<\/span><\/p>\n","protected":false},"template":"","class_list":["post-52250","kb_article","type-kb_article","status-publish","hentry","support_category-astro","support_category-power-systems","support_category-astro-service-bulletins","support_category-power-systems-service-bulletins"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v24.7 (Yoast SEO v26.0) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Astro SB007 - SL8 Battery Incident - Freefly Systems<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/freeflysystems.com\/knowledge-base\/sb007-sl8\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Astro SB007 - SL8 Battery Incident\" \/>\n<meta property=\"og:description\" content=\"Date Released: Feb 15th, 2024 Subject: SL8 Battery Incident Effectivity: Immediate Required Action:\u00a0 None at this time &#8211; Alert &nbsp; INTRODUCTION On November 9th, 2023, a customer had an SL8 Battery malfunction and catch fire prior to a flight. 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