There simply isn't a market (that I'm aware of) for anyone to make 전자사전 geared to English speakers. I see this as good news for you.
A paper Korean-Korean dictionary would be OK, but depending on it's intended Korean audience you may or may not find it helpful. (An elementary student dictionary would be more helpful than a more professional, adult one.)
But I would really recommend getting an electronic one. I don't think you'll have any battery issues. My Nurian is charged with a USB cable. Some might need a lithium battery, but I bet you could always find a replacement at a store like Radio Shack.
The other benefit to the electronic versions is that they allow much easier cross reference; you just click the unknown word, and you can start a journey linking around to many new words. Further, Since it is geared to Korean speakers, you can trust that the Korean example sentences are highly accurate, natural, and correct.
Sure, there are a lot of features in my dictionary that I have little use for. But you can get over those, or just use them in reverse!