Opus 150 Causing Drain or Bad Battery? Maybe 5vsb Issue?
My specs are in the sig.
2 weeks ago I got an Opus 150 and it's worked fine. During the week I drive the car every day and usually the off time is maybe 12 hours.
2 weekends ago I started using S3 standby during the week and it was fine. Then the weekend came and the car was off for over 24 hours and it cranked OK. I drove it around and the next day it wasn't OK. The car wouldn't crank. So I switched to Hibernation. This last weekend I had the car off for 30 hours and it cranked, but seemed a little slow. The voltage was 11.8v before I cranked it. So after driving around I left it off for about 24 hours again. This time I checked the voltage at the 15 hour mark and it was at 11.8v which is OK. I then checked on it after another 9 hours and the voltage was 9.8v!
How could it go down that low in only 9 hours?
Why did the Opus 150 let it get that low?
Won't the Opus turn off all power after 11volts? Or does the PC have to be running for it to do that?
I don't have any USB devices, but the mobo might be drawing a little from the 5vsb. Maybe that little extra drain is causing a mediocre battery to start to fail? I really can't explain a 3v drop in only 9 hours.
Do you think the battery is the problem?
I load tested the alternator with a sophisticated computer. It was putting out around 80 amps hot and under heavy load. It passed all the tests.
I'm going to try and run a battery test next.
Does anyone think the Opus can be drawing a little too much current when powered down?
Do you think I should mod the Opus to turn off the 5vsb, just in case?
Would doing so still allow the mobo to use S3 standby?
Any help would be appreciated.