Never thought about it for cleaning, battery acid and a battery charger might well work.
I remove taps/bolts from aluminium with it. It leaves the ali clean with a grey
sort of natural anodised looking colour. Worth a try on some scrap.
white vinegar,
cleans crusty anodising quite well...
I use it on my Suzuki engine parts.. carbs, pipes, etc
with a soft toothbrush then wipe clean and protect with clear laquer