1000A Portable Power Center "saves battery" by turning off various sets of ports after 30 secs of non-use. There seems no internal way to bypass this feature, unit isn't programmable & China manufacturer doesn't respond to even share what minimum draw is required. This is the FIRST challenge I've had with an otherwise awesome, flexible Power Center.
Problem is: my new 12VDC Fridge takes 3 min @ power-on to start compressor (ITS safety feature) AND Fridge's other circuitry (LCD display, ect.) doesn't seem to draw enough power to keep the Power Center 12V ports hot. I can 'trick' Power Center by temporarily adding additional 12V load..fridge runs fine as it cools..but as soon as compressor shuts off, same problem again...idle fridge doesn't draw enough power to keep 12V ports hot.
For reference, charging another jump-start battery from 12V Power Center port kept Power Center ports hot..it otherwise uses 110VAC->15VDC@1A adapter to charge.
VERY IRONIC that I have to do this, totally ridiculous anyone has to waste power, but seems I need to make a simple barrel-jack dongle to ADD small 12VDC load to another of the three 12V ports..something I can plug-in & forget when only powering fridge. I'm handy enough to follow circuit diagrams & have access to typical hobbyist parts (resistors, capacitors, pots, diodes, LEDs, etc)...just looking to end-up with simplest, smallest device without concerns for heat or fire (so, sadly, no incand bulb).
If not substantially more complicated, costly or larger..seems more efficient to make a pass-thru adapter that only adds this add'l load when needed (when fridge is idle) to continuously provide min power draw.
I understand the challenge without any data from manufacturer..just hoping there's a simple, flexible circuit where I can swap a component, or adjust a pot, until I find the 'magic' that makes Power Center & Fridge work unattended...minimum unnecessary power waste, minimum heat...and reliable enough to safely transport meds during long roadtrips.
Just to move things along: YES, I've searched various forums for hours without any practical solution. YES, I know required MIN power consumption would certainly be helpful (still trying). YES, its too late to return Power Center (I'm acquiring needed TravelVan items slowly, finally just got fridge). NO, I don't have ready resources to buy a different Power Center (very pricey)...this one powers induction burner, nutibullet & microwave without problem..NEVER thought too little consumption would be THE annoying issue.
Though I haven't tried it yet, I'm considering adding barrel jacks to cheap eBay Power Monitor..maybe my next experiment. Perhaps it'll add enough drain to solve the problem with just It+Fridge, but it might also demystify what IDLE Fridge consumes. It COULD be as silly as needing just a few add'l mAmps.
Ideas are MUCH appreciated.