电压控制的装置出现错误可能会导致蓄电池组充电过度，这反过来可能会加速放电，比正常情况更严重。
A fault in the voltage-control mechanism may thus cause a battery to become overcharged, which, in turn, might precipitate a deeper discharge than normal.
苹果充电器在电池充满时会自动停止充电，但是那些未经授权、廉价的第三方USB数据线没有此功能，而且可能使电池过度充电，进而损伤电池。
Your Apple-issued charger is designed to cut power when the battery hits 100%, but those cheapo unauthorized third-party USB cords are not, and may do some damage by excessively juicing the battery.
优质电芯，能防止电源对电池过度充电，保护电池不被损坏。
Quality batteries, power supply to prevent overcharging of the battery to protect the battery from being damaged.
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