The suggestion is to use an electrolyte made up of a 60/40% mix of
sulphuric acid/water, plus 30g/litre of glycerine (glycerol?).

Q's:

It's difficult to buy concentrated sulphuric acid in a smallish quantity
at a reasonable price. Can battery acid (35%) be used instead?

Is glycerine the same stuff as glycerol?

Isn't glycerine a liquid? Why is it expressed in terms of weight?

What's the glycerine/ol for?

Thanks
Jordan