UNIT: DUDU7
Car: Kia Ceed Sw 2013
Canbus: No
My DUDU7 draw -0.18A when the car is not used / turned off.
When I disconnect the DUD7, the draw is 0Ah.
If my car was unused for a week, It did not start as the battery was empty.
So i bought and installed a Victron SmartShunt so I can see what is going on.
Test:
Battery 100% full:
After 2.5 days / 64 hrs (250506 22:00 - 250509 14:00)
Voltage 11.95v
Consumed Ah -10.6Ah
There are no examples of a DUDU causing a battery drain
In your description, the drain after disconnecting the DUDU is 0 milliamps? (Without any added devices, the car usually still draws 0.01-0.03 amps after turning off the car, haven't encountered 0 milliamps yet)
Do you have any other devices connected to the harness or USB port on the DUDU?
If the DUDU radio is set to turn off when the engine is off, what is the current draw when the engine is off?
Here's a video of testing the quiescent current, is that how you tested it?
https://drive.google.com/file/d/1j9MfMa0mwqUeMnTVR7I9GJlLCJBMaui3/view?usp=sharing
Turn off the engine and disconnect the negative battery terminal with the multimeter in series in the center and let it sit for 20 minutes, the current will slowly drop. This is when the accurate quiescent current will be. With the DUDU device unplugged, the current is usually 0.01-0.03 (which is normal). With the DUDU device connected the current is at 0.02-0.05 (this is normal)
1: DUDU7 To measure the hibernation current You need to measure it after you have turned off the power for 5 minutes, because it is only after 5 minutes that it goes into full hibernation.
2: There is no vehicle parked for 1 week hibernation problem, because the MCU firmware preset value of up to 70 hours automatically become completely shut down.
In between, if the current is too high or the battery voltage is too low, it will automatically change to shutdown state.
This Victron SmartShunt maybe not show so exatly as 20mAh.
But the car was off 2.5days 64hrs and 10.6Ah was used from the battery.
That total draw is 10,6/64= 0.165A per hour.
In this picture you can see when the radio is connected, and also when I have disconnected it.
It shows the amp drawing as -0.2A, but as it not show exactly it can be it showing 0.165A as 0.2A.
Anyway, It's a huge difference when I have the DUDU7 connected.
All other things I have extra, as USB chargers and Amplifiers are the fused removed from.
I removed the DUDU7 from the car and connected it to a LAB Power Supply (It show Volt, Amp and Watt).
When DUDU7 is in Shutdown state is consumes 0.118A. I have had it on for 24hrs now, and still show 0.118A.
Also, it only sleep for 5 min, after that it ReBoot from start.
Here is what happens:
SETTINGS // Vehicle // Start Set // Head Unit Status after Ignition Off: Sleep
12.0 volt on Yellow wire
Power Usage: 0-5min 0.660Amp
Starting Unit (12v red wire): Unit wake up from SLEEP
Power Usage: 5-7min 0.147Amp
Starting Unit (12v red wire): Unit ReBOOT from Start
Power Usage: 7+min 0.117Amp
Here is a video clip whats happens. Its 2x speed.
https://youtu.be/SuR1YLOEd1A
CLIP2:
In this clip it has been in sleep mode around 24hrs.
(SETTINGS // Vehicle // Start Set // Head Unit Status after Ignition Off: Sleep)
It boot from start when adding 12v+ on red wire. (Not from Sleep as it should)
I change to Shutdown mode
(SETTINGS // Vehicle // Start Set // Head Uniti Status after Ignition Off: Shutdown)
Power Usage after turning off: 0.146 Amp, and after around 7 min 0.117A.
Dan-LS You want to test the quiescent current, not the standby current
1: Static current usually refers to the constant current of an electronic device, circuit or system in a steady state (e.g., standby or continuous operation), which is very important for the normal operation of circuits and equipment, and can be used to determine parameters such as power consumption, operational stability and power requirements
2: And standby current is the current required to maintain the machine's minimum system functions (e.g., clock, memory retention, etc.) when the machine is not working. Simply put, the quiescent current relates to the minimum operating current of the device itself, while the standby current relates to the current required to maintain the entire system when not in operation
Turn off the engine, disconnect the negative terminal of the battery, use a multimeter connected in series in the middle of the battery and the negative cable, at this time for the static current, leakage can only be tested in this way, you can consult a professional car repair personnel
https://drive.google.com/file/d/1j9MfMa0mwqUeMnTVR7I9GJlLCJBMaui3/view ?usp=sharing
Dan-LS Here is the log data for DUDU7's normal two cycles of sleep/wake. Your device seems to be in an abnormal state, unable to enter sleep mode and instead rebooting continuously. Please download the latest stable system version and manually update using the reset file under the "Factory Reset" directory via USB. Then observe if the issue persists.
dudu-lai
I been study electric and it well known to me how it works and how to measure. If you read my post you see that it's the current the unit is drawing I measure. So I don't know what you talking about.
I measure in either Sleep mode or Shutdown mode, the two state in can be in when the car is turned off, and It consumes too high current.
YAOXILONG
Thank you for the succession. I downloaded the files and did a "Factory Reset" from the USB and DUDUOS 3.6 got installed. Wow, It look great, more easy menus and nice look!
Sadly, my unit still use around 0.150A in Shutdown state, and still go to Shutdown state after 5min in Sleep mode. Never go down to 0.020A
It must be something wrong with my unit.
How do I best proceed to get in replaced? I bought it from an DUDU Aliexpress store.
Are you measuring with B+ in series into the measuring device?
If parked for a week without driving , the battery is drained, this is most likely not consumed by the DUDU7.
You could start by testing the overall current draw of the battery after locking the car.
DUDU-Meng
Yes, I measure in series, the amps used by the unit. It draw when the unit is connected. I tested it in the car, also If you look at the video with the LAB Power Supply there is no car involved.
It use around 0.150A in Power Off mode (depending on the voltage 12-13.8), or 1.4 Watt.
I connected an Ammeter directly to the DUDU7.
I turned off the car an let it enter SHUTDOWN mode.
After 21 hrs it have used 33 Wh.
21:12 Hours
32,75 Wh
2,65 Ah
12,05 Volt
Video: https://www.youtube.com/watch?v=BfD0AH0EvAg
At 00:47 is clip 2, after 21 hours.
Picture:
The device's idle current is abnormal. Please long press the Duduos version number in Settings>About Device to display detailed device information and take a photo.
I let the DUDU7 unit sit for 114 hours, around 4.75 days.
It was using 12.67Ah = around 0.111A / hour.
I also talk in messages chat in AliExpress with the seller.
Got advice to upgrade the MCU files. I did, and not help, seams all the same.
Also to make an ylog, but I do not know how to send files it AliExpress chat.
