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7 months ago
I am buying a HUD Head Up Display. It goes in Sleep Mode when ignition is off (screen turns off). I asked the manufacturer, they said it uses 0.3mAh when in Sleep Mode (400mA while in use).
Is this enough to drain the battery? I know 0.3 is probably not a lot, but who knows. Manufacturer also suggested me to unplug it if I don't use the vehicle for a week+.
Oct 9, 2022 at 13:35
If it really is 0.3mAh that it is using while in sleep mode, then this is what you will be draining from your battery. Chances are there are no weird features it will activate in your car's computer while sleeping. To be sure, of course, you could measure the drain on your battery without the device and then with the device plugged in.
Oct 13, 2022 at 22:20
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