Dashcam / Battery Pack Power on and Power off Issues

[dateddDshcam]

I have the T-800 in my 2023 Cadillac Lyriq. I also have the battery pack and the 4G unit because I don't want to connect to the vehicle's electrical system. When I power on the pack, the dashcam powers on. Then after a few seconds, it powers off. I press the power button, and I get the "power off" chime. Then I press the button again, and it powers on and runs normally. If I use the cigarette lighter while driving, I power the car off, and the camera powers off, even though the battery pack is still powered on. Everything works fine, but why do I have to go through this frustrating ritual to operate my camera? I discovered a workaround. I power up the pack and hold the power button on the camera. It powers on and powers off. Then I press the power button, and it powers on and runs as normal. Still, in my opinion, quite an arduous activity for a supposedly sophisticated piece of technology. Any ideas?

 

[Julian23]

The T800 should normally power on and off without having to press any button.
I have the T800 with the 4G kit and the battery powered by the 12V socket. It turns on and off as it should.

Have you checked if the wires from the battery to the 4G kit are connected correctly?

I'm not sure if this is the same issue I encountered, but also check my post:

Post in thread '70mai Dashcam Battery Pack - Unboxing & Review'

Apr 19, 2026

I swapped the 70mai Battery Pack to a different car.
Previously, it was powered by the fuse box. Now it uses the 12V socket.
Since the fuse box method was used previously, it now needs to be switched to cigarette lighter charging mode.
Otherwise, the battery won't charge and will not power a dashcam.
The dashcam will briefly turn on but then go into parking mode.



70mai provides a guide on how to change the mode:

Switching charging method​

If the battery pack was previously charged using the fuse box method, follow these steps to unlock it and switch to the cigarette lighter...

• Julian23

• 

 

[rcg530]

I attempted to answer your question in the other thread that you placed a post in

Post in thread '70mai Battery Pack on T800 real-world experience?'

Wednesday at 12:35 PM

Here is my frustration: I have the T-800 in my 2023 Cadillac Lyriq. I also have the battery pack and the 4G unit because I don't want to connect to the vehicle's electrical system. When I power on the pack, the dashcam powers on. Then after a few seconds, it powers off. I press the power button, and I get the "power off" chime. Then I press the button again, and it powers on and runs normally. If I use the cigarette lighter while driving, I power the car off, and the camera powers off, even though the battery pack is still powered on. Everything works fine, but why do I have to go...

• rcg530

• 

 

[LateralNW]

When I power on the pack, the dashcam powers on. Then after a few seconds, it powers off. I press the power button, and I get the "power off" chime.

2 things
It goes into parking mode as it is designed to do. Note it doesn't show any signal ( perhaps the power button slowly flashes. I'll have to check that)
On pulling out the power cables it will make a shutdown sound so it did still have power.

Or
Setting the parking mode on the camera or in the app
These settings only work when a hardwire kit like the up0/3,4,5 is fitted.

 

[dateddDshcam]

So, my issue is not really being addressed. The output from the pack goes through the 4G unit to the camera. The Cigarette lighter goes to the port to charge the pack. With the car on, it charges the pack flawlessly. When I shut the car off, the camera turns off. When I turn the car on, the camera turns on. However, why doesn't it remain on if the battery pack is providing power to the camera? Excluding the cigarette lighter, if I power on the pack, the camera powers on, then off after a few seconds. Mind you, the cigarette lighter is not plugged in. The only way to power the camera without the cigarette lighter, and the car off is to:

1. Power the camera on by holding the power button. It powers on, then quickly off.
2. I press the power button, and the camera powers on and stays on.

I do this because I want the camera to stay on while the car is parked. For surveillance purposes.

Before I had to do this ritual, if I powered on the pack, the Camera would power on, then off, and stay off.

Power is power; it's being supplied. If the system is designed to run off the pack while the car is parked, and nothing to do with the fuse box, then it should power on when I power on the pack. Does it need the fuse box to stay on survellance mode, which negates the purpose of the battery pack?

 

[rcg530]

So, my issue is not really being addressed. The output from the pack goes through the 4G unit to the camera. The Cigarette lighter goes to the port to charge the pack. With the car on, it charges the pack flawlessly. When I shut the car off, the camera turns off. When I turn the car on, the camera turns on. However, why doesn't it remain on if the battery pack is providing power to the camera? Excluding the cigarette lighter, if I power on the pack, the camera powers on, then off after a few seconds. Mind you, the cigarette lighter is not plugged in. The only way to power the camera without the cigarette lighter, and the car off is to:

1. Power the camera on by holding the power button. It powers on, then quickly off.
2. I press the power button, and the camera powers on and stays on.

I do this because I want the camera to stay on while the car is parked. For surveillance purposes.

Before I had to do this ritual, if I powered on the pack, the Camera would power on, then off, and stay off.

Power is power; it's being supplied. If the system is designed to run off the pack while the car is parked, and nothing to do with the fuse box, then it should power on when I power on the pack. Does it need the fuse box to stay on survellance mode, which negates the purpose of the battery pack?

Since the battery pack's 3-wire 12V output power cable is providing power to the LTE module and the dash camera indirectly, make sure the LTE module remains "on" when the vehicle is parked and the ignition system is turned off. You should see at least one of the LTE module's [UP05 for North America] LED(s) still on when the vehicle is parked. The USB cable that connects the UP05 and the T800 must be the one supplied with the UP05.

It's important to confirm that your T800 settings are allowing the dash camera to enter into parking mode and remain on.

• System settings > Auto-off when parked
  • Set to "Never".
  • This setting shouldn't apply in this configuration [hardwire kit], but just to be sure make sure it's set to "Never".
• Parking security
  • Duration
    • I have mine set to "Unlimited" since my T800 is powered by a battery pack, so I would think "Unlimited" would be okay for yours too.
    • You can set it to something other than "Never" as long as that is long enough for your parking mode needs.
  • Recording footage
    • This allows you to select which of the T800 cameras will have footage recorded during parking mode
  • [Parking Mode Choice - One, two, three of the following parking modes MUST be enabled]
    • Collision detection
    • Motion detection
    • Time-lapse photography
  • If zero of the three parking modes are enabled, the T800 will simply turn off when the vehicle is parked.

Make any changes to the settings as necessary and retest your situation.

If it still doesn't work correctly, that's when it will be necessary to confirm the battery pack's 3-wire output power cable was properly spliced together with 3-wire input power cable to the UP05 LTE module. If that's been verified and it still doesn't work correctly, it will be necessary to start checking whether the battery pack is keeping the [VCC] constant power on when the vehicle is parked and the [ACC] power is turning on [while driving] and off [while parked].