I just got an iPod dock - the Kicker IK501 - and realized that portable does not mean that it has a rechargeable battery. It uses a 22 volt DC adapter, so i am wondering if it is possible to buy a portable 22 volt battery pack so that i can use my dock without it being plugged into the wall. If there is such a thing, then please list a place where I can get one. Thanks so much!
22V is a bit of an unusual number, but modern stuff uses weird voltages. You may be able to find such a battery, but it would be costly. Contact Kicker and ask if it can operate on 24V; if so, you could use two inexpensive 12V batteries in series, or if a lower voltage would work acceptably (maybe 18V), you could use three 6V batteries in series. 14 D cells in series would provide 21.5V, which is close enough to 22V, but that's an awful lot of D cells.