Generic camera batteries in Akiba

I'm off to Japan on Friday and the battery pack I ordered for my Camera from the US hasn't reached me yet. In that case, I may need to buy the extra battery in Akihabara.

Does anybody know if generic batteries for the Kodak Playsport is available in Akiba? The model is Kodak KLIC-7004 / Fuji Np-50 / Pentax DL-I68 Compatible Li-Ion Battery? How much would one cost?

Should not be a problem to find one, but I have found that batteries are not cheap in Japan. Yodobashi Camera have this at 4,200 Yen:

http://www.yodobashi.com/ec/product/100000001000905222/index.html

Bic Camera have this generic at 1,680 Yen:

You can probably find cheaper generic versions around Akihabara without too much trouble, but it might be cheaper buying in your own country.

Thanks RobBeer!

That helped me a lot!