One Liter, Two or Three Liter Carbon Bottle?

2 liter is about a 1/2 liter larger than a 90 cubic inch I get about one top off out of it on a 580 cc tank to 3500 psi and a couple partials so it should top off a 480 probably 2 with a couple partial fills
I use a small collection of 90ish inch bottles as my field fill tanks. They work rather nicely with chinese fill stations on them