Could my charger be ruining USB cables?

NEVER THROW AWAY AN ANKER PRODUCT!!!!! Well until you contact them and get new stuff. They will replace that shite.

Could be that device. Could be something else, hard to say over the internet.

From a purely theoretical standpoint, yes.

The charging station is supposed to regulate amps. The USB cables are just a pathway for that regulated flow.

If you've narrowed it down to a specific port or ports (USB), and the other port types (AC socket) aren't killing any devices or cables, then you've kind of already figured it out.

Luckily the ports regulated enough to not kill your devices.

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Those ports could be damaging the end of the cable. That's the only way. Nothing inside a USB cable to fry

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Any other thoughts then? I have thrown away (or at least stopped using) probably $40 in USB cords because they no longer charge my devices, either via the charging station I previously mentioned or through any other charger (wall mounted chargers, USB port on computer, Anker battery pack charger, car charger...). I have one cord that was never used on the charging station because it was a dedicated cord used elsewhere and it works fine. I have used it with every other charger I own (besides the charging station) and it is great.

I guess like you're saying, the ports on the charging station could be damaging the ports on connectors on the cables? Seems odd but possible.

My devices recognize that they're plugged into a charging cable when I use the bad cables, but it actually drains the battery instead of charging it, or constantly cycles between charging and not charging while draining the battery.

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I guess like you're saying, the ports on the charging station could be damaging the ports on connectors on the cables? Seems odd but possible.

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I agree it's unlikely, but it's the only explanation based on what you've described.

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constantly cycles between charging and not charging while draining the battery.

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I've only ever seen that with a bad charger. The cable was fine.

So far every cable I've used with my charging block has stopped working after about a week. It's gotten expensive. Everything worked fine for a couple of months but not anymore.

Highly unlikely it's the cable at fault. If it's the cable, then the charger is probably pulling too many amps. Make sure the rating for amps on the charger isn't too high for the cable.