It's a battery charger combo! This one comes with a Tenergy TN480U AA/AAA Ni-MH battery charger and 8 Tenergy Ni-MH AA batteries (to be tested in a future video).

While it might not be as inexpensive as the UGREEN AA/AAA charger, this charger can charge 4 more batteries at a time, and comes with 8 AA batteries, or different AA/AAA combos depending on what you want.

Watch to learn more!

⚠️ Disclaimer:
This video is for educational purposes only. Any and all work to repair a device is performed at your own risk. The Curious Engineer (TCE) is not responsible for any possible harm, damages or injuries caused by the use or misuse of the provided information. Taking action from this video, is accepting that you proceed solely at your own risk.