Replacing battery on RAZR?

Long story short: dropped my RAZR into a toilet a few weeks ago (don't ask) and it promptly died, so I ended up replacing it with a RAZR Maxx.

With the original RAZR, leaving it in a bowl of rice for a few days didn't help - however, when I plug it in to a charger, the red light on the phone flickers for a brief moment before going dead again which leads me to believe that the phone is fine but the battery is dead.

With that in mind, is there a way to possibly replace the battery with an aftermarket version and resell the refurbished RAZR on the open market? It doesn't seem that cellulardr.com has replacement batteries for sale but wanted to check with the experts here before I write it up as a loss. Thanks!