is my battery broken??

my gel blaster battery disconnected and fell on the ground when i shooting it and when i plugged the battery back into my blaster it was not shooting. after that i plugged in the battery and my charger that came with the splat r ball blaster was blinking a red light non stop which it does not normally do. after letting the battery charge for about a hour i plugged it back into the blaster to shoot it and nothing happened the blaster was not shooting at all. What should i do?