手電筒內的電池會自己沒電。。。。。:－2014星座運勢. 唐立淇2014星座運勢,2014星座運勢大預言,2014星座運勢處女座,薇薇安2014星座運勢,2014星座運勢雙魚座,2014星座運勢天秤座,2014星座運勢

May 25 Sat 2013 22:59
手電筒內的電池會自己沒電。。。。。:

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手電筒內的電池會自己沒電。。。。。

May 25th 2013, 14:40

例如一個LED手電筒內裝四號電池三枚

新電池剛拆封的點亮的時候非常亮好然後關閉電源都不去開啟

過了一個禮拜去開手電筒電源手電筒變很暗裡面的電池耗盡了

拿出來測一下電壓不足了

怎麼會這樣手電筒電源關著的也在逐漸耗電喔?

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