Installed the battery backward. A short. Or a fuse blew.
The phone is probaly already shorted out and nonfunctional, changing the battery would likely do nothing as the damage is already done.
The transmission connector is right below the battery it could have been knocked loose.
Because your odometer, or something connecting the odometer to the battery, is broken. Most likely the odometer is the problem if the rest of your dashboard is working fine.
If it isn't not working, then it must be working properly.
Batteries aren't in properly. Battery contact points dirty. New batteries are faulty.
It depends why it's changing. Windows default settings dims the display if you run a laptop off just the internal battery (to conserve power). You can change the settings, but you'll shorten your battery's working time between charges.
check the fuses in the cab of the car
Disconnect battery for 5 minutes to reset computer, then try it!
working of a lead acid battery
my air condtion stop working, just the red light is on, no leaks, full of freon. change battery about 2 weeks ago but didnt have anything reset.
If the rear air conditioning is not working, this could be due to one of severalÊproblems. It could be due to a blown fuse.
Probably not, but it's almost certainly one of the cheapest things you can try to see if it helps.