It's an old battery, so if it's been sitting on some battery manufacturer's shelf for almost 5 years, it's probably going to be in pretty poor shape. Fir under $15, you pick one, then see if you can get i to take a charge if you leave it sitting on the charger overnight. If it does, use it until it either warns you to charge the battery or dies. Repeat, so you've charged and used a total of 3 times. That should bring it back. (It's called conditioning.)