I have looked everywhere and have pieced together what I think I need and linked to it below. I have no experience with these items and I want to make sure I get the proper pieces the first time. I have a dual battery setup in my Jeep with a 200 amp isolator. I ran a dedicated 8 gauge 20' power cable with a 60 amp fuse (I will adjust this after deciding on the resistor) to the rear for powering the capacitor I purchased on eBay which I linked below. It powers 4 dash cams in order to spare my Odyssey batteries the constant discharge. In the end the cameras will drain the capacitor down to about 4.8 volts.The capacitor will power them down to the level of the batteries, then the isolator will disconnect the main battery at 12.7 volts. I wired some relays to a Lukas lk-350 which will disconnect the 4 cameras from the accessory battery at 12.4 volts. I used a 400 PIV diode on the power cable to keep from sending the charge back to the batteries. Everything works as expected so I just need to make sure I get the charging resistor correct. This is where the problem begins I am unsure of the best resistor. I used the calculator linked below and found what I believe to be the best combo of time and amps. I would prefer it to charge it 5-10 minutes but it seems to jump the watts and amps up quickly making it harder to find the resistor so if it takes 10-15 minutes that will be fine. At .5 ohms it looks like if starting from 0 volts it will use at most 392 watts at 28 amps. I linked to the available .5 ohm resistors I could find but some are 6 week lead times and others are 6 volts, etc.. The cost is fine if this will work but I would like some feedback about this vs another solution. Let me know if there is any information I left out. Thanks in advance
I verified the stock alternator puts out 160 amps and usually runs around 13.85 volts at the accessory lugs on my dual battery setup
Capacitor
http://www.ebay.com/itm/231647617424?_trksid=p2057872.m2749.l2649&ssPageName=STRK:MEBIDX:IT
Calculator
http://mustcalculate.com/electronic....php?vfrom=2&vto=14&vs=14&c=433&r=.5&time=900
Resistor
http://www.mouser.com/Passive-Compo...ors-Chassis-Mount/_/N-7fx9g?P=1z0wn8jZ1z0x6wc
I verified the stock alternator puts out 160 amps and usually runs around 13.85 volts at the accessory lugs on my dual battery setup
Capacitor
http://www.ebay.com/itm/231647617424?_trksid=p2057872.m2749.l2649&ssPageName=STRK:MEBIDX:IT
Calculator
http://mustcalculate.com/electronic....php?vfrom=2&vto=14&vs=14&c=433&r=.5&time=900
Resistor
http://www.mouser.com/Passive-Compo...ors-Chassis-Mount/_/N-7fx9g?P=1z0wn8jZ1z0x6wc