I have this for my controller and it works great, got it from Amazon.The idea is to purchase a cable that has a magnetic (detachable) Micro USB adapter. That adapter can remain inserted in the Micro USB port on the left side of the remote controller. Since you won't be constantly inserting and removing a cable in that port, there will be less of a chance of damaging it.
There are many cables like this available on Amazon. For example, this one:
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