battery question
Thread Starter
Burning Brakes
Joined: Nov 2004
Posts: 1,028
Likes: 0
From: San Antonio Texas
battery question
bought a battery/charging indicator that plugs into cigarette lighter (from Vector??, i think).
tried it on my 94 chevy p/u. shows 12.5 volts when engine off. 13.5 when engine running so i'm assuming it's reading the alternator charging the battery.
on 79 vette it reads 11 volts when engine off!!!! but 13.8 when engine running.
battery (vette) shows 12.5 volts across the terminals when checked with voltmeter (with engine off).
what would account for the "low" battery reading through the cigarette lighter?
tried it on my 94 chevy p/u. shows 12.5 volts when engine off. 13.5 when engine running so i'm assuming it's reading the alternator charging the battery.
on 79 vette it reads 11 volts when engine off!!!! but 13.8 when engine running.
battery (vette) shows 12.5 volts across the terminals when checked with voltmeter (with engine off).
what would account for the "low" battery reading through the cigarette lighter?
