Sorry, I can't say, as I have never seen a 10A "trickle" charger, only the little 1A wall wart ones, and that's not enough juice to get things done. There might be such a thing as a 10A "float" charger, but 10A is way bigger than what I would consider a "trickle". Maybe I need a "vocabulary adjustment".
In my experience, it takes a large "box" charger for power and heat dissipation. It all comes down to amps, surface area of your anode (the + side), and "line of sight" to the corrosion to get it done. If you don't have enough amps, or you have a puny anode, or you don't have literal "line of sight" between the anode and the corrosion on your part, it will take inordinately longer.
Here's a quick-and-dirty explanation with good pictures.
Electrolytic Rust Removal aka Magic He's getting away with a 1.5A box charger, which might be OK in something as small as a 5-gallon bucket, but for larger parts, it would take way too long to get results, IMHO.