This publication describes systems and techniques to identify a faulty battery pack in a portable electronic device. Portable electronic devices, such as video game controllers and smartphones, are often powered by rechargeable lithium-ion or lithium-ion polymer battery packs. These battery packs must comply with various safety standards and regulations. As one example, one industry standard requires identification of a faulty battery pack and termination or non-initiation of battery charging. In some portable electronic devices, compliance with this standard (and other standards and regulations) requires additional or specialized hardware components that increase the cost of the electronic device and take up extra internal space. Disclosed in this publication is a portable electronic device that, during charging or initiation of charging, utilizes software logic to identify a faulty battery pack and take appropriate actions without additional or specialized hardware.
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Lim, James Robert; Liang, Jesse; Tang, Wilson; Oliver, Rob; Chen, Aaron; and Soma, Ravi, "System for Faulty Battery Identification and Control", Technical Disclosure Commons, (February 28, 2020)