[問題] USB充電電池
有人用過嗎..像下面這種 (非打廣告)
http://tw.f4.page.bid.yahoo.com/tw/auction/d24300171
不知道它是什麼材質的 @@
(鎳氫OR鎳鎘OR鋰?)
有使用者知道嗎?
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