Hi guys. Yesterday i ran out with another issue with my fiesta. IT WONT START!?!?!. I was wondering maybe my recently installed amplifier and subwofer killed the battery? But i doubt, coz i turn it on while driving the car or the engine is running. And the next morning when i want to turn on the engine. I got nothing. All the lights in the dash are on brightly and the park lights are clearly open. But when i turn the key all i got is a slow clicking sound and the car wont start. So i pulled out the battery and took it to the shop for charging. And they said the battery case was a bit bloated. But the battery is still fine but as soon as they remove it from charging, the voltage immediately dropped. So ive come with a conclusion that i need to replace the battery. But i want to know from you guys. Based on your experience. Is my battery dead because of my car audio. Coz the bass on my audio is really kicking good and i loved it But maybe it ate a lot of juice out of my battery and killed it? Also i checked all the fuses from the engine bay and in the dash its all ok. So what i got left is the battery to be replaced. Is it really the battery? That wont start the car even all the lights in the dash are on? Thanks in advance.