EVALUATION Does the job, but there are virtually no instructions on its use. Most of the complaints about lack of power are probably from folks who installed the batteries wrong. COMPARISON I love my big powerful hand blenderHamilton Beach 59770 Turbo-Twister 2-Speed Hand Blender but sometimes, it is just too much, and I don't want to go to the hassle of cleaning it. For simply mixing a package of powdered chocolate mix into a cup of milk for hot chocolate, etc. the Norpro is perfect, and cleanup is just a few seconds. I use it mostly to make home-made gelatin desertsKnox Original Gelatin (32-Count Envelopes), Unflavored, 8-Ounce Boxes (Pack of 2) . For example grape "Jello" made with real grape juice. INSTALLING BATTERIES > The gray switch "panel" is the door to the battery compartment. With the pointy end to the left, slide the grey panel to the right. Install the first (bottom) battery with the positive end (nipple end) to the right. Install the second (top) battery with the positive end to the left. Slide the panel back in place. > The batteries are hard to install and harder to remove. This can be remedied by applying silicon grease to the contactsPermatex 22058 Dielectric Tune-up Grease - 3 oz. . The silicon grease also protects the contacts and improves the electrical connection.*** > Alternative, it is easy to make a "battery extractor": Cut a ca 1/2" x 4" strip of paper (or thin ribbon); roll the end around a battery, fold up to make a tab, and glue the tab back on the paper strip or ribbon (in effect make a "doggie collar and leash" for a battery); slip the bottom battery in place, then the top battery, if you have more than 1/2" left at the top, trim it off. To extract the bottom battery (after extracting the top battery, just pull up on the leash. INTALLING MIXING TOOLS Notice that the lower portion of the stems of the mixing tools is hollow. This hole fits over the solid metal rod in the power unit. You just push the tool in, and when you are done, pull it out. Sometimes the fit is pretty tight, and you have to push hard to install, or pull hard to take the tool out. Be sure to push it ALL THE WAY on, as far as it will go. If the fit is too tight, a little silicon grease (apply with a toothpick) fixes the problem.** USE > Lower the tool into the liquid to be mixed and press the grey lever. Immerse only the lower half of the tool in the solution. Do not immerse as far as the pointy end of the power unit, or you may suck up water (etc) into the motor. > The mixer is one-speed. You can adjust the "violence" of mixing by choosing the tools. Obviously the stick-like tool is the gentlest mixer. The plastic Y is the second gentlest. The wire whisk is the second most intense mixer, and the "frother" is the most intense mixer. Use the frother only in a water glass or other tall, narrow, container. Although the whisk is intense, it also slows to pretty slow if immersed to most of it's length. I find the plastic Y to be the ideal mixer for mixing gelatin into 3-4 cups of water, without making froth. WASHING UP NEVER submerge the power unit in water---just wipe it off. You may be able to clean the tools adequately by simply operating the mixer in a glass of clean water. If not, then pull off the tool and hand wash. *** Why silicon grease? Vegetable oil may turn gummy after a while, making the situation worse. Petroleum-based oil can attract dust and damage rubber and plastic. Silicon grease does not attract dust, does not damage plastic, is actually good for rubber, and improves and protects electrical connections.