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[49.195.51.32]) by smtp.gmail.com with ESMTPSA id u14sm41561060pfk.111.2020.12.30.23.28.41 for (version=TLS1_2 cipher=ECDHE-ECDSA-CHACHA20-POLY1305 bits=256/256); Wed, 30 Dec 2020 23:28:41 -0800 (PST) Received: from james by esk with local (Exim 4.90_1) (envelope-from ) id 1kusNx-0004gi-2a; Thu, 31 Dec 2020 18:28:37 +1100 From: James Cameron To: "piclist@mit.edu" Sender: "piclist-bounces@mit.edu" Date: Wed, 30 Dec 2020 23:28:36 -0800 Subject: [EE] Calculation of the state of safety (SOS) for lithium ion batteries Thread-Topic: [EE] Calculation of the state of safety (SOS) for lithium ion batteries Thread-Index: AdbfR98V3kWg2Ya6TNmi2R0QSYq49Q== Message-ID: <20201231072836.GA17778@laptop.org> List-Help: List-Subscribe: , List-Unsubscribe: , Reply-To: Microcontroller discussion list - Public. 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I referenced it today in trying to figure out risks of storing children's laptops for a few years before using them. I also carefully charged an abusively stored battery, with temperature monitoring and an office escape plan. The battery was from a batch manufactured five years ago. No issues. --=20 James Cameron https://quozl.linux.org.au/ --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .