So, if you do see a blinking red light on your Black and Decker charger, it likely indicates that you have a defective battery attached. According to Black and Decker, it may take up to 30 minutes ...

Capacity — 2 or 6 Amps Outputs — 3 ports (battery clamps, rings, and 12-volt) Weight — 1.7 ... something more along the lines of this Black + Decker 2 Amp charger will suit your needs.