In theory, a well-designed lithium battery pack should never be overcharged, thanks to onboard protection circuits called a Battery Management System (BMS). These circuits automatically prevent overcharging and other dangerous conditions. Battery protection. . Have you ever wondered what keeps your electric vehicle (EV) battery from overheating, short-circuiting, or getting damaged during charging? The answer lies in a small but mighty component called the Protective Circuit Module (PCM).
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