行動電源容量標示 完全搞懂

作者: 鍾旭昶 | 中時電子報 – 2013年8月22日 上午5:30

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var t_art_head = new Date().getTime();行動電源容量標示 完全搞懂作者: 鍾旭昶 | 中時電子報 – 2013年8月22日 上午5:30

工商時報【鍾旭昶】

日前消保官抽驗市售產品,發現產品標示與實際內容不符合?看懂「行動電源容量標示」其實很簡單。

正規行動電源廠商的容量標示應有「電池實際容量」和「電池額定容量」。一、「電池實際容量標示」:電池的「實際容量」是指電池標準的放電條件3.7伏特(V)下所放出的實際電量,受放電倍率和溫度的影響,並標註於產品本體、包裝。二、「工作電壓轉換」:電池本身工作電壓為3.7伏特(V),若要供給手機和其它USB設備電量需要經過升壓轉換為手機之工作電壓5伏特(V)。三、「轉換耗損」:行動電源在充電時會發熱,根據能量守恆定律,散發的熱量就是內置電池的能量耗損,又依不同廠商之電路設計或同料不同,耗損能量也不盡相同。

四、「電池額定容量」:電池的「額定容量」是指電池於特定放電條件下,例如手機或平板電腦為USB 5伏特(V)恆流+恆壓(5V)控制放電條件,測量整個轉換過程中釋出之電量,即可測出實際得到之額定容量,即可供給手機之總電量。簡易公式為「電池實際容量」×「電壓轉換」×「轉換耗損」=「額定容量」,以實際容量5,200mAh試算,5,200mAh×3.7V/5V×0.8耗損=額定容量3,078mAh(毫安培小時)。

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