充电宝的英语怎么说

充电宝的英文是"power bank"。它的来源源于英语中"power"一词，意为"电力"，"bank"一词，意为"储蓄、储备"。

下面是一些英文例句和其中文翻译：

I need to charge my phone, do you have a power bank with you? (我需要给手机充电，你有带充电宝吗？)
I always carry a power bank with me when I travel, just in case my phone runs out of battery. (我旅游时都会带着充电宝，以防手机没电。)
The power bank I bought last week is not working properly, I need to return it to the store. (我上周买的充电宝不正常工作，我需要把它退回商店。)

希望这些例句能帮助您更好地理解充电宝的英文。