He he, this made me smile, as a teenager my parents wouldn’t let me use mains to power my projects, so I was stuck with using batteries, what they didn’t realise Is that I quickly learnt about switch mode step up supplies and with access to big 12V lead acid batteries before you know it I had access to hundreds and thousands of volts. I also learnt to respect charged capacitors!However, one area I found batteries useful is DIY - building your own gear.