I have a set of Ryobi tools. I had two batteries go kapooey in less than a year. HD wouldn't honor the warranty- said it was only good for 90 days. 90 days for commercial use, one year for personal use. Never been in HD since. Not sure about the Aldi brand- someone has to make it for them. Look close at the tool and go to the big box stores and hardware stores. Compare. Sort of like lathes- some are identical except for the paint job. Also, check the warranty for the Aldi brand. If there is a problem, where do you take it? If was to buy cordless tools, I would buy Dewalt or another top brand. JMHO.
BTW, I got four Ryobi batteries for $99- factory blems with full warranty...in writing.