USB Cable Smart Wireless USB Charger Rechargeable Overcharge Protection for Adapter Devices with LED Indicator USB Electronics [2 Pack]

Some reviews are complaining about these “flashing” and “not charging”… oh my… THAT IS HOW THEY CHARGE. I’ve charged 3 of my pen batteries for about a grand total of about 16 hours now.No issues. Strong quality. Fast charge. Incredibly amazing connection. No damage to my pen batteries. I’ll be buying more when the time comes. These have done their job and continue doing so.

I like that you get 2 for the price of 1. Very light weight, very portable, easy to use. Charge indicator light turns green when fully charged. Overcharge protection. Leave one at home and take one with you in the vehicle. Great value and quality for the money

Works well but requires some modification to work with my battery.I bought this as a replacement for the OEM USB adapter for one of my 510 "soldering irons".While the threads and the USB section were all good the plastic shielding around the threads was too close and I could not screw in my battery. I removed the excess plastic with a Dremel and now everything can screw together.I’m giving 4 stars as everything works and was probably labeled correctly on the ad, I just didn’t pay attention and assumed it would work with what I had. In all a good product even if you must put in a little extra work to get it set up.

They seem to not work very long! Something inside them comes apart. And I ordered twice thinking it was just my luck but it wasn't. They did the same thing!!

Lost the charger I've had for years and so ordered these. They charge my stick-style vape batteries great. No issues.

Cheap product, one stopped working after a week, twice.

Literally just went feral and bit off the outer ring that wasn't letting it screw in and it fit perfectly.

Charges my cheap EVOD battery perfectly. Thankfully, no complications. Plus, I liked that it came w/ two in the purchase so I can have a spare charger.