We've got battery holders for all sorts of needs and projects! Waterproof? Here ya go. With an on/off switch? Easy peasy. Here's our latest addition: 2x2 AA Battery Holder with Premium Header Wires. What's so special about 'em? Well besides being a nice compact cubic shape, you can plug the wires right into a breadboard! No need to fight with those skinny stripped wires you normally get. Of course, you can always still solder them into a PCB.
The four batteries are held in series, for a nominal output of 6V DC for alkaline (6.4V when fresh, 4V when dead), and 4.8V DC for rechargeables (5.2V when fully charged, 4.4V when discharged). Using rechargeables will make this work nicely with nearly any 5V project, with alkalines you may want to put a 1N4001 in series to drop the voltage from 6V down to 5.3V.
Looking for an option that won't leave your batteries exposed? We've got lots of battery holders with snap-on covers and the like
AA Batteries are not included, but we have them in the store!