▲ 实测发现手机在寒冷天气下耗电较快。
你是否觉得手机在天气冷时比较容易没电呢?日本电信业者实测手机在各种温度下的耗电情形,发现在较寒冷的环境中电量确实掉得比较快,但温度过高也会加速电池老化。
根据日媒grape,日本电信公司KDDI分别测试手机在3种环境下的耗电情形,A环境为摄氏25度有空调的房间,B为摄氏零度的寒冷地区,设定为冬天的东京,C则是零下20度的严寒地区,设定为冬天的北海道。
在3个环境中以充饱电的手机重复播放存在手机里的影片,发现在A环境中经过5小时46分会没电关机,较寒冷的B环境需要4小时17分钟,最冷的C环境则是仅2小时25分钟后就关机,和A相差3小时以上,可见温度较低似乎真的会加速耗电。
KDDI对此说明,锂电池的原理是透过离子在电池内部的电解液中移动来传导电流,而温度较低时电解液黏度会上升,离子很难移动,因此影响电池效率。
电池在低温之下消耗加快,只要温度回升就会恢复原本的功能,不过太热也会导致电池老化。KDDI指出,锂电池最佳温度是摄氏5至35度之间,在一般室温的房间里不会影响电池运作,但若使用暖暖包或暖炉等设备,可能使电池温度超出范围,加速电池老化。
抛弃式暖暖包放在衣服口袋里也可能超过40度,超出电池工作温度范围。因此KDDI提醒民众,千万不要将手机和暖暖包放在一起。
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