There are plenty of powerful blenders on the market but most take a lot of space. The Six by Six Portable Smoothie Blender lets you make delicious smoothies and drink them on the go. It has 6 stainless steel blades and a 20,000 RPM motor.
The blender is powered by a 2000mAh battery. One charge is long enough for 15 cups. You can get yours here.