Oops... Blackvue B-124 Power and Expansion Ports use the same plug!

krypttic

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... so of course I flubbed and plugged directly from the fuse box into the expansion port. I also had the cigarette lighter cord plugged in as well and drove for an hour or so. Everything still works fine, but should I be worried about anything? I guess with this setup, my B-124 was trying to charge my fuse box???

I also had the switch set to "hardwire" and it still charged the battery at the 9 A setting. I didn't think the cigarette lighter could charge with that current.
 
It should be absolutely fine. 4s configured LiFePO4 operates from 14.6 volts (3.65 x 4) or 14.4 volts (3.6 x 4) When freshly charged down to 10 volts (2.5 x 4)when safely discharged. That is very similar to your typical Pb battery range.

All that was being done was that your car battery was trying to equalize voltage with your B124. Your cigarette lighter's load was actually spread between the fuse box too so it wasn't overloaded.
 
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