Can I blend hot soup in the travel jar?
No, and this is a genuine cause of scald injuries with personal blenders of every brand rather than a theoretical risk. The jar closes, which is the point of it, and a sealed container of hot liquid is a pressure vessel. Hot food gives off steam, blending whips air into the mixture and adds heat through friction, and the pressure inside a closed jar rises. Opening it then releases it all at once, and hot liquid comes out with real force. Use a jug blender with a vented lid, or a stick blender in the pan.
It leaves a frozen lump in the middle. What am I doing wrong?
Three habits fix almost all of it. Put the liquid in first, so the blade has something to move. Cut frozen fruit smaller, or let it soften for a few minutes rather than dropping in a hard block straight from the freezer. And blend in short bursts rather than holding it on, stopping to stir if it stalls; one owner got a thick, creamy smoothie exactly that way. Without those habits, the ingredients pack around the blade instead of circulating and the motor simply labours.
Will it crush ice?
Crushed ice, yes; a tray of solid cubes, not well. Hamilton Beach says the blades power through ice, but the reality is more careful: it will take crushed ice and make it finer, and it has a rough time with full-size cubes. A 175-watt motor delivers its effect through speed rather than torque, which shears through ripe or thawed fruit, yogurt, milk, protein powder and leafy greens with enough liquid to circulate, and struggles with anything that physically resists the blade. Crush ice first, or chill the drink with frozen fruit instead.
It has started leaking during blending. Is the jar cracked?
Check the simple things first. The commonest leak on the go is the sliding drink spout on the travel lid; one owner found out it leaks when the slide is left open, so close it before you carry the jar. A leak during blending usually points to overfilling or to the jar and blades not being fitted together squarely, so refit them and try again with less in the jar. Washing by hand now and then, rather than only in the dishwasher, is a gentle way to look after the rubber parts on any small blender.
How full can I fill it?
Leave room for the mixture to climb. A blender at speed drives the contents up the walls, and a jar filled to the brim is the one most likely to leak, which is the last thing you want over a motor base. The 14-ounce figure is the jar's volume, not a target to hit.
How do I clean it?
Hamilton Beach says the jar, blades and travel lid are all dishwasher safe, so the routine is genuinely short. For a quick clean, blend a little warm water with a drop of soap and rinse. The one awkward spot is under the sliding drink spout on the lid, which does not come apart, so give it a brush now and then. The motor base is wiped with a damp cloth and never immersed or rinsed under a tap.