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  #11  
Unread 25th April 2016, 11:33 PM
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I'll be doing something similar, my plan of attack is

~22AH gel battery in with the spare tyre
dc/dc charger (probably a ctek D250s for ability to use solar as well)
couple of ports/plugs in the rear

Those jumper packs can be charged with an optional 6 amp charger (the supercheap ones anyway) and can run fridges, duration/weather/voltage sag sensitivity permitting (rules out waecos)
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  #12  
Unread 26th April 2016, 01:35 AM
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My Foz has a "battery-in-a-bag" which is strapped down on the rear passenger floor when needed. It's a 100 AMP hour in a heavy canvas tool bag (Bunnings). The battery bottom is velcro'ed to a piece of tightly fitting marine ply for added stability. Two Anderson plugs provide in/out power. Charging is via a Voltage Sensitive Relay (VSR) and cable run through the firewall and inside the centre console area to surface under the passenger seat. When not needed just unplug and take it out.
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  #13  
Unread 27th April 2016, 01:18 AM
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Here's how mine is setup so far.

LH and RH
Each battery is protected with it's own 5A fuse,
Double sheath 4mm Wiring runs down under the trim panels to keep it safe
I'm designing some little cover flaps with straps that attach to the body under the floor as proper tie-downs to keep the from turning into missiles in the case of a rollover




ACC Charging supply from rear of ACC socket via diode to prevent back-powering of the ACC circuit,
Using ACC prevents AUX batteries having current pulled when cranking.



IEC plugs used for all connections, even the Fridge as I have an abundance of them, and they don't bounce out like Cig-lighter plugs do.
And and extra socket that I can direct connect to a solar panel or the other dual 24AH battery and solar setup in my camper-trailer to keep everything maintained.



Camper Batt's and solar reg.
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  #14  
Unread 11th May 2016, 06:37 PM
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Nobody using LiFePO4 batteries ( eg shorai)? Only slightly dearer nowdays, MUCH lighter, smaller , non orientational and can take a reasonable deep discharge. I have a couple of 9AHr spares from ex motorcycles I am going to use. They also will take a REALLY fast charge.
Anybody got any reason they are not suitable?
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  #15  
Unread 11th May 2016, 09:05 PM
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http://ev-power.com.au/webstore/12v-...4-battery.html

I wouldn't say 0.5C is a fast charge, even if it is 10amp, most DC-DC chargers will do 20amp, seen a few that do 40amp

Also they don't handle discharge as well as the basic lead acids and aren't as forgiving either.

Need a proper charger too if it's anything like lipo rc batteries

Pretty pricey too, you only have to look online and see people are balking at a dc-dc charger for their setup, let alone doing an lithium battery setup properly haha, I'd run one though if I was serious into using it every weekend but my uses a small lead acid battery and dc-dc charger will be fine
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  #16  
Unread 25th June 2016, 05:08 PM
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All my motorcycles have Shorai LiFePO4 batteries. Charged from the bikes normal charging system. Will deliver good current rates as well. Car charging system will have no trouble with them though they will take a pretty big current draw when charging from low. My 11AHr one weighs 800grams replacing the 3kg standard one.
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