Yes I understand. Just be aware of warning to not use the negative post to not interfere with battery management reading of parameters. I am not sure but expect at least in hybrid that the 30 minute timeout of power ports occurs only when truck is not in ready state. If truck is in ready state then the truck is capable to restart ice and keep both batteries in proper SOS. There could be a timeout for ready state but I am unaware of exactly how all this is programmed or could possibly be changed. I know on my lariat with the push button if I push it twice (or 3 times maybe?) I get a dash message something like "extended power active" do not remember what exactly). If that's the case I may try turning key to start twice on my XLT LUX to see if I get the same message. I expect if it does, perhaps the truck is programmed to extend time that power points are active without the cab climate control and other things remaining active. Also it may keep bms system active to recharge 12v from HVB within permissable HVB SOS range. Ideally ice could be restarted to recharge HVB as needed. Ford has spent a lot in setting the hybrid (at least) up and I am going to try to use it first. If you tie in to the positive battery be sure to have a jump starter or have an auto low voltage alarm or cutoff set up on your accessory tap on the positive post. Good luck, I am also considering something like a Massimo remote power supply with a pure sine inverter with 30-60 amp (if possible) fast charge circuit in truck. But that setup with large enough battery to supply 10-12 amp sustained draw would be in $2k range so I'll most likely downsize it.Just thinking about having my power port I installed in the bed cubby stay live. It has its own power switch that controls the both the 12 volt and USB ports. I also installed an dedicated inline 10 amp blade fuse. There are times you just don’t want to keep putting the key in.
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