I was talking about batteries for nitro cars. Not electric vehicles, Capacitors and tiny packs to run big servos and battery boxes that need a certain shape battery to fit.
BB was recommended when I first got here. It's all my engines have ever had. They always start right up and run with the same tune as last time. Even after years I found out. I only have to tweak a bit for seasonal temp changes. It's the batteries that are a big pain in the butt.
I have never used ARO. My cars sat for 2 years after we moved. Started right up like I ran them yesterday. Using a good fuel is the most important thing IMHO.
I don't think it will hurt anything I have just never done it.