my gauge reads 10 volts drive half mile it go to 8
Alternator is defective and needs replacing.
alternator probably needs replacing not charging battery or bat is dead and not taking charge
No. When you run a battery really low then fully recharge it, that's called deep cycling, and it takes a severe toll on battery life.
Either your battery is dead, or your alternator has failed.
It needs battery power, fuel, compression and spark to start and run. You are missing one of those.
The electric shaver appears to be capapble of operating on both mains electricity and the internal battery. Mains electricity will keep the battery recharged but if you use the battery to run the shaver then soon or latter the battery will run out of elctricity. Battery Low means No Working Shaver.
Is it low on Gas or Deisel? if it is that will trip the check gauge light. Or if you ever run the fuel low. It needs time to reset it self.
There is the ( low coolant ) warning light that is at the bottom of your gauge cluster between the engine temperature gauge and your tachometer
On a 1996 Ford Crown Victoria : The H / L ( High / Low ) gauge : On the drivers side of the speedometer is the battery voltage gauge On the passenger side of the speedometer is the engine oil pressure gauge
A run down or nearing end of life battery. Dirty and/or loose battery connections.
If the gauge is showing less than 13 volts with the engine running, then the alternator is more than likely defective. Have the system checked at your local auto parts store.
1 gauge cable should do the job
Low battery (bad battery or alternator) or bad starter, most likely.