Cannula every 2-3 days. Tubing every 6 days. Cartridge every 4-5days as this cartridge is quite small compared to my old pump cartridge. Battery is only one single AAA battery in this pump and generally lasts about 2 weeks.
A tube should last 6 days. Stainless steel sets should be changed every 2 days, plastic ones should last 3 days but I find I have to change mine every 2 days otherwise my bloods go up.
What pump are you on?