My brother has a portable speaker he got from Radio Shack a while back. The speaker's terrible when it comes to highs, my ear hurt so much because of the crackle. It also has a really awful battery life, he'll charge it the night before and It'll start beeping for a charge after a couple hours.

I'm looking for something that'll fit in a small space as he uses it when he's driving since his van's speaker is way in the back, not in th front.