Have chased down a lot of battery and electrical problems over the years and 8/10 times it's related to some aftermarket accessory. So that generally the first question is what is connected to power that's not OEM. Amps, radio, lights etc.

Then its' what $3 plastic door sensor made of soy based plastic and chinesum solder has failed and is drawing power.

Also I'd estimate that 1 out of every 100 or so batteries off the shelf are bad from the factory. Maybe a little more or less. But some percentage are bad and the only way you can really tell is with a proper load tester.

Stat Monitor Repairman said:

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Have chased down a lot of battery and electrical problems over the years and 8/10 times it's related to some aftermarket accessory. So that generally the first question is what is connected to power that's not OEM. Amps, radio, lights etc.

Then its' what $3 plastic door sensor made of soy based plastic and chinesum solder has failed and is drawing power.

Also I'd estimate that 1 out of every 100 or so batteries off the shelf are bad from the factory. Maybe a little more or less. But some percentage are bad and the only way you can really tell is with a proper load tester.

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Sorry....I'm dumb when it comes to electronics, etc....

So do you think it's the Garmin dashcam in general causing the issue or the amazon odb power adaptor? Should I try a Garmin or different brand power adaptor or wire it in to the fuse box or just into the mobile power outlet?

Either one could be the culprit really. May not be either but would be the #1 suspect for sure before diving into anything else.