Dead battery and sleep mode amps
Posted: Sat Nov 17, 2012 5:09 pm
First, I'd like to mention that I like the Trinity a lot, as well as the TSS custom tune I'm using 
. Maybe this is a software issue, or some odd defect in my particular Trinity programmer.
During sleep mode, the battery amp draw is 0.14 A. For a relatively short time this is insignificant, but for a couple weeks it means a battery that is too drained to start the engine.
Let's do the math: 0.14 amps times ( 24 hours) times (14 days) equals 47 AH (Amp Hours ). 47 AH loss is enough to cause a typical battery to not start an engine. The battery in my 2008 Jeep Wrangler is an Odyssey 34-PC1500 that has a max of 68 AH under the test conditions. Test and real conditions are not equivalent, but for a quick sanity check that's about 31% capacity remaining after two weeks -- which is probably a best case scenario. The reality is that after two weeks it wasn't dead, still lit the dome light fine, but couldn't crank the engine.
Testing: Ignition switch in OFF position (key removed), courtesy lamps turned OFF. Amp meter connected in series at the positive battery term. With Trinity unplugged, 0.00 amps. After Trinity initially plugged in, 0.18 amps. With Trinity in sleep mode (LCD display off, amber LED slowly blinking, and sleep timer set for 60 seconds), 0.14 amps. The 0.14 amps is continuous and doesn't reduce. When Trinity is disconnected during sleep or regular mode, the amps immediately go to 0.00.
Note that even though the current meter indicated 0.00 above, there is actually some small current drain -- probably less than 5 ma (0.005 A) which is so low that this meter range doesn't show it.
The vehicle is a 2008 Jeep Wrangler and Version 1R09A is in the Trinity.
What do you think is causing this? Let me know if I can help further to diagnose this, or perhaps try a replacement if necessary.
. Maybe this is a software issue, or some odd defect in my particular Trinity programmer. During sleep mode, the battery amp draw is 0.14 A. For a relatively short time this is insignificant, but for a couple weeks it means a battery that is too drained to start the engine.
Let's do the math: 0.14 amps times ( 24 hours) times (14 days) equals 47 AH (Amp Hours ). 47 AH loss is enough to cause a typical battery to not start an engine. The battery in my 2008 Jeep Wrangler is an Odyssey 34-PC1500 that has a max of 68 AH under the test conditions. Test and real conditions are not equivalent, but for a quick sanity check that's about 31% capacity remaining after two weeks -- which is probably a best case scenario. The reality is that after two weeks it wasn't dead, still lit the dome light fine, but couldn't crank the engine.
Testing: Ignition switch in OFF position (key removed), courtesy lamps turned OFF. Amp meter connected in series at the positive battery term. With Trinity unplugged, 0.00 amps. After Trinity initially plugged in, 0.18 amps. With Trinity in sleep mode (LCD display off, amber LED slowly blinking, and sleep timer set for 60 seconds), 0.14 amps. The 0.14 amps is continuous and doesn't reduce. When Trinity is disconnected during sleep or regular mode, the amps immediately go to 0.00.
Note that even though the current meter indicated 0.00 above, there is actually some small current drain -- probably less than 5 ma (0.005 A) which is so low that this meter range doesn't show it.
The vehicle is a 2008 Jeep Wrangler and Version 1R09A is in the Trinity.
What do you think is causing this? Let me know if I can help further to diagnose this, or perhaps try a replacement if necessary.