[alacran1]

I been having my truck slowly and barely start every morning and it seems to be getting worse. Couple days ago i was at my lunch and used 20 minutes listening to music and i tried turning it on and it didnt turn on just click click click, ok. The next time it didnt start i just let the key in the ignition for about 10 minutes and it cranked but couldnt turn the truck on so it just did the click click thing again, no start. The following morning i tried starting it and it did the same thing cranked 3 times but really slow and long cranks followed by the clicks and it didnt start. Today i used a multimeter on the battery and it read 12.2v. I tried turning it on and it didnt turn on again. I hooked up a battery charger and it read as it was fully charged. I used the emergency quick start option and it did start. So i checked the volts and it read 14.4. Do i just have a battery that lost its cranking power?

 

[alacran1]

But when i used some jumper cables the truck started quick and fast, no slow cranks.

i also have two amps and 2 subs. When i use my power window button the volts meter on the cluster drops between 9v and the 14v mark.