Can I Refill Coleman Backpacking Fuel Canisters?

Can I Refill Coleman Backpacking Fuel Canisters? Coleman propane gas canisters are handy for camping. They are used to power outdoor cooktops and portable propane camping-lanterns. While these canisters are usually thrown away after being emptied, you can refill them using a 20 lb. How do I refill my backpacking propane tank? Can you refill