Cigarette lighter wiring question
09-12-2018, 05:07 AM
#12
Banned
Join Date: Jan 2018
Location: Pennsylvania
Posts: 2,327
They are always on, so always lit. You can hook the power lead up to a relay to
shut off when the car goes to sleep. While driving, it would always be on... Mine,
would always be on, even with the car off, the power points in my S197 are hot at
all times.
shut off when the car goes to sleep. While driving, it would always be on... Mine,
would always be on, even with the car off, the power points in my S197 are hot at
all times.
09-12-2018, 09:28 PM
#13
3rd Gear Member
Thread Starter
Join Date: Sep 2011
Location: Florida
Posts: 632
I'm not sure what to think about that 11.7 volts. It's an Optima battery, and they all seem to read low, but start just fine. The voltage meter is completely accurate, so I'm not sure what to think. That battery of less than a year old and garage kept
09-13-2018, 05:01 AM
#14
Banned
Join Date: Jan 2018
Location: Pennsylvania
Posts: 2,327
We have dealt with Optima batteries, and they are NOT what they're all cracked up
to be. We have replaced so many under warranties, and failures, I lost count. The
RED TOP are the worst. I have used AGM, they seem to be the best for my
applications. None of my batteries go below 12.1 volt, car off . I also have a live
meter in my Jetta, and when it started going below 11.9, is when failed within a month.
From optima:
It should not be at 11.7 Volts, that's an indication the battery is bad.
to be. We have replaced so many under warranties, and failures, I lost count. The
RED TOP are the worst. I have used AGM, they seem to be the best for my
applications. None of my batteries go below 12.1 volt, car off . I also have a live
meter in my Jetta, and when it started going below 11.9, is when failed within a month.
From optima:
Fully charged, engine not running, starting batteries (all REDTOP® or BLUETOP® 34M) should measure about
12.6 volts to 12.8 volts. Deep-cycle batteries, including all YELLOWTOP® and dual-purpose BLUETOP batteries,
should measure approximately 13.0 to13.2 volts. Voltage measurements of the battery when the engine is running
are the output of your alternator. This measurement should be about 13.3 to 15.0 volts, which may differ due to
temperature. At average operating temperatures of 50° to 80°F, your alternator output voltage should be about 14
volts to 14.8 volts.
A problem with your battery is causing it to not hold a charge. To check this, remove the battery from the vehicle,
charge it to the full voltage, wait 12 to 24 hours, then measure its voltage. Another faster, but less-preferable way
to do this is to turn on the high-beam headlights for 15 seconds, turn them off, wait five to 10 minutes, then check
the voltage. If you measure the voltage of the battery the next day, week or even a month later, the voltage should
be close to the max voltages listed above.
12.6 volts to 12.8 volts. Deep-cycle batteries, including all YELLOWTOP® and dual-purpose BLUETOP batteries,
should measure approximately 13.0 to13.2 volts. Voltage measurements of the battery when the engine is running
are the output of your alternator. This measurement should be about 13.3 to 15.0 volts, which may differ due to
temperature. At average operating temperatures of 50° to 80°F, your alternator output voltage should be about 14
volts to 14.8 volts.
A problem with your battery is causing it to not hold a charge. To check this, remove the battery from the vehicle,
charge it to the full voltage, wait 12 to 24 hours, then measure its voltage. Another faster, but less-preferable way
to do this is to turn on the high-beam headlights for 15 seconds, turn them off, wait five to 10 minutes, then check
the voltage. If you measure the voltage of the battery the next day, week or even a month later, the voltage should
be close to the max voltages listed above.
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