Or you could go for Anker's $99 fancy charging station which has its own rechargeable batteries and these special covers. So you can just dock them to charge.

或者你也可以选择售价99美元的 Anker 充电站，它有自己的可充电电池和这些特殊的盖子。这样你就可以把它们放在那里充电了。