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オリジナル投稿者: BurnieG ,

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If the iPhone and iPod have sat for months than the batteries probably have discharged.  Lithium ion batteries have built in protection to keep them from overcharging and discharging to much.  If the batteries have not been charged or used in months and had a low charge months ago the batteries protection may have put them in a sleep like state.  Plugging them into their normal chargers is not able to wake them in this state.  In order to wake the batteries you would need a boost charge. Boost charging works by supplying the battery with a higher current for a short period of time.  It's the same idea as jumping a car battery.  Most people are unaware that most lithium ion batteries have this kind of technology and end up throwing out batteries that are asleep, not dead.  They make special boost chargers that can wake a lithium ion battery but they are pricey.  There are other ways(can be dangerous if not careful) that you can wake a battery.  You can find these methods on YouTube by searching for how to wake a lithium ion battery.  Replacing the batteries are a good option too.  As others have said make sure to use the correct charger to prevent damage to the charging ic and the battery.  Hope you find this information useful and I wish you luck on your repairs.

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