Battery drop per week
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Joined: Dec 2013
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From: Columbia, SC
Battery drop per week
I have a TrackerPlus battery monitor on my ‘25CS and one reason I got it was to measure any voltage drop due to a wireless CarPlay adapter that “seems” to be active…a lot….all the time….unsure.
anywho I left my car at the airport last week and voltage dropped from 12.64 to 12.36. It was pretty cool…around 40-45
Normal?
daily driver so it seldom sits for a week.
anywho I left my car at the airport last week and voltage dropped from 12.64 to 12.36. It was pretty cool…around 40-45
Normal?
daily driver so it seldom sits for a week.
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Joined: Jan 2021
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It's not too big a drop. Lots of electronics on these cars and a slight drop should be expected. If your carplay adapter is potentially a concern then just unplug it if you plan on leaving the car for long periods.
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A couple notes on the Battery Trackers....
Don't go by the State of Charge % as your main data point. Voltage is the most accurate because state of charge is based on an equation and voltage is the true accuracy because it is a hard data point. We put the state of charge in as a way to give a "relative" level of charge because most people (understandably) don't know what voltage is considered a good state of charge. So always go by the voltage reading. Also reviewing the Historical data is a super good way to review how your car is charging the battery and how fast you battery is discharging over a period of time which will indicate if you have a fast parastic draw. Another good data point is you Voltage drop during starting, that can indicate if you battery is still providing a solid voltage during the high amp discharge of starting.
For BobCooper , you didn't say how long you lefft you Car at the airport, but if it was for a week with a .3 tenths discharge that is actually OK for a week with a Car Play adapter connected that might be active.
Don't go by the State of Charge % as your main data point. Voltage is the most accurate because state of charge is based on an equation and voltage is the true accuracy because it is a hard data point. We put the state of charge in as a way to give a "relative" level of charge because most people (understandably) don't know what voltage is considered a good state of charge. So always go by the voltage reading. Also reviewing the Historical data is a super good way to review how your car is charging the battery and how fast you battery is discharging over a period of time which will indicate if you have a fast parastic draw. Another good data point is you Voltage drop during starting, that can indicate if you battery is still providing a solid voltage during the high amp discharge of starting.
For BobCooper , you didn't say how long you lefft you Car at the airport, but if it was for a week with a .3 tenths discharge that is actually OK for a week with a Car Play adapter connected that might be active.