Strange... I keep reading about the Dura carts leaking.. but I haven't had any problem with that. All 4 of my batteries, and all 4 of my atomizers are still working too... (and knocking on wood!) I love my Dura.. and can't wait to get the manual batteries when they come out!
I'm filling my 901 constantly... but seems like the Dura lasts at least twice as long between fills.
maybe it's because I'm using the Dura cart on a 901 atomizer ,it's a snug fit but my pockets get wet spots CONSTANTLY , if i lay it down on my desk i get a round stain around my atomizer. I don't think I'm over filling it or anything sometimes it's worth the extra capacity , and sometimes i would rather just use the smaller 901 cart to avoid getting my hands greasy with nic juice