If you mean you connected the jumper cables around the wrong way then you may have blown the amp in the stereo. Speakers shouldn't be affected.
I've never tried that, but I am pretty sure the battery would no longer work.
I think diz nuts last longer
Yes The larger the battery, the more voltage the battery has.
See this link.
the battery will no longer work.
Dead battery -will no longer charge.
A language that is no longer spoken is known as a "dead language." These languages are no longer used in everyday communication and have no native speakers.
Energizer and other battery brands have an amino acid that gives the battery power.
energizer
Yes, energy is stored in a battery
The battery is as flat as a pig's nose !
A battery can last from 1 year to many years. You change it when it no longer will start the car or when it no longer will hold a charge.