Pretty good, but all chargers of this type don't charge the battery if it's completely empty... so you need to have a classic one as well... a bit crazy, but that's how it is...

I bought it in April 2023 and it burned in January 2024.
I was using it daily since then, of course, to charge my car in the summer, which I keep in the garage, and similarly in the winter for whatever it provided for the engine.
It's a waste of money, I do not recommend it!

I got it for the Lithium battery of my motorcycle, where it took a few hours, but it revived it perfectly.
Two months ago, I happened to try it on my father's small tractor battery, which we considered dead (within the general specifications of the 904, for a larger battery of a regular tractor or truck, you should go for the 908). After about 12 hours, it successfully revived it.

I received it 2 days ago and it immediately started working. It seems very good and high quality. I will come back in a short time after using it enough. The only negative thing for me is that the cable with the earphones is very short.
In the end, the watermelon was bad. It broke relatively quickly. It's a shame that I was happy that I found something good. Let's go for something else