Toyota Rav4 EV Forum
http://myrav4ev.com/forum/

Best generator to charge Rav EV?
http://myrav4ev.com/forum/viewtopic.php?f=7&t=1446
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Author:  JasonA [ Fri Jan 09, 2015 6:09 pm ]
Post subject:  Re: Best generator to charge Rav EV?

4EVEREV wrote:
JasonA wrote:
jimbo69ny wrote:
Lol dual j1772's so you can charge at 2 charging stations at the same time.
I do that with my Leaf.. :roll:

No CHAdeMO..



Why do you need two?
Because I don't have CHAdeMO on my Leaf, and there's ALWAYS 2 j-plugs usually available at public L2 stations, so I designed and installed 2 liquid cooled Brusa chargers... and put another J1772 where the CHAdeMO would have been.

Done.

Ohh.. and your comment on...
Quote:
But, I can buy a whole lot of Tesla 18650 cells for the price of a generator and all the associated hardware.


You show me what 18650's (TESLA cells) and WHAT associated hardware you can whip up for $1999 (cost of a EU3000i)

I'd like to see your parts and cost analysis breakdown...

Like a WHOLE LOT :roll:

P.S. I'm sitting here at Carson Toyota doing nothing for the next 3 hrs.... so I've got time to burn :lol:

Author:  TonyWilliams [ Fri Jan 09, 2015 7:18 pm ]
Post subject:  Re: Best generator to charge Rav EV?

My cost analysis is simple. To run the onboard 40 amp charger, I need TWO of the 7kW Hondas, at $4500 a pop (remember, 7kW is not the continuous duty cycle of the generator). That's $9000 before the trailer, mounting hardware, wiring, gasoline tank (maybe the original Toyota tank will fit?). Let's call it $10,000.

With that, I can put exactly 9.6kW * 85% = 8.16kW DC into the battery. The car consumes 65 / 3.4 = 19kW to travel 65mph on a good day (no headwind, no cold, no cabin heater, no standing rain or snow, level ground).

So, my $10,000 generator setup (plus CARB compliant) will likely double my range. That means that even if I have plenty of gasoline, there isn't enough kW to power the car much over 35-40mph when the battery goes dead... and it will go dead because I would be burning energy at more than twice the rate than I am adding kWh's.

BATTERY SOLUTION to double range:

Buy wrecked RAV4 or Model S. Put battery on trailer. Have a nice day.

The cost of Model S has been as low as $20k, and assuming the battery isn't damaged, there's enough cells to double the range of two Rav4 EV's.

If you can get the wrecked RAV4 EV for $10k, even easier.

I'm not suggesting batteries are cheaper (yet) than gasoline power. But it's not ridiculously more expensive.

Author:  JasonA [ Fri Jan 09, 2015 7:46 pm ]
Post subject:  Re: Best generator to charge Rav EV?

The original thread (as was on the Leaf forum) started as a backup means to carry in case of needing to charge by being stranded or home charging aka. power outage.

I've been taking my EU3000i out to El Mirage dry lake for weekend trip and it just run all weekend with the ext. tank while charging the Rav and powering all the rest of our stuff. Pumping 20a/120 constant is no issue and is ready to go by the time the weekend is done.

I'm sure everyone has seen the pics I've posted in the other thread.. but as for in a prefect world, wrecked RavEV's are still getting a pretty penny..

In the end, when the grid goes down or emergency power is needed... a generator will have to be used to fill ANY battery back up.

http://www.myrav4ev.com/forum/viewtopic.php?f=7&t=1152&start=20
http://www.mynissanleaf.com/viewtopic.php?f=27&t=4903

Image

Author:  TonyWilliams [ Fri Jan 09, 2015 9:16 pm ]
Post subject:  Re: Best generator to charge Rav EV?

Ok, so not extending your autonomous range. Sure, almost any size generator will work, if time isn't a factor.

When the power goes out at home, I hope to be able to have solar power to fill up the battery.

Author:  yblaser [ Sat Jan 10, 2015 7:15 am ]
Post subject:  Re: Best generator to charge Rav EV?

JasonA wrote:
davewill wrote:
Do keep in mind that using the generator to charge an EV will result in bad emissions and fuel economy compared to a normal ICE vehicle. Those small engines don't have to meet the emissions and fuel consumption requirements that a car does.
All Honda EU inverter series are 50 state CARB and US Forest service compliant...

Plus the new 3000/6500 and 7xxx whatever series are all fuel injected now for 2015 and ULEE.

Probably more efficient then a car... lol

I hope you are being facetious, but if you are not or for other people reading the thread ARB emission standards for generators and automobiles are very very different.

Author:  Kohler Controller [ Sat Jan 10, 2015 4:36 pm ]
Post subject:  Re: Best generator to charge Rav EV?

JasonA wrote:
The original thread (as was on the Leaf forum) started as a backup means to carry in case of needing to charge by being stranded or home charging aka. power outage.

I've been taking my EU3000i out to El Mirage dry lake for weekend trip and it just run all weekend with the ext. tank while charging the Rav and powering all the rest of our stuff. Pumping 20a/120 constant is no issue and is ready to go by the time the weekend is done.

I'm sure everyone has seen the pics I've posted in the other thread.. but as for in a prefect world, wrecked RavEV's are still getting a pretty penny..

In the end, when the grid goes down or emergency power is needed... a generator will have to be used to fill ANY battery back up.

http://www.myrav4ev.com/forum/viewtopic.php?f=7&t=1152&start=20
http://www.mynissanleaf.com/viewtopic.php?f=27&t=4903

Image


JasonA, do you use a modified 120V EVSE that can pass 20A to make the most out of the 3kW capability of the charger?

Author:  JasonA [ Sun Jan 11, 2015 5:45 am ]
Post subject:  Re: Best generator to charge Rav EV?

I only use openEVSE. And I've modified the firmware so I have amperage adj in 1a increments.

I've never used the stock toyota unit.

Author:  Oreotedd [ Wed Nov 07, 2018 4:36 pm ]
Post subject:  Re: Best generator to charge Rav EV?

I just got new EU2200i from Honda. That's a new version of 2200 watt generator. It is so quite - unbelievable.

Author:  cashcow [ Thu Nov 08, 2018 11:24 am ]
Post subject:  Re: Best generator to charge Rav EV?

For carrying the generators

https://www.harborfreight.com/750-lbs-c ... 62660.html

not sure if they would fit this cargo carrier, but it is 750 pounds capable. A cargo carrier should be easier on your range than a small trailer. If you can fit it in the cargo carrier you could possibly driver longer. Better so, if the generators fit in the carrier you can then proceed to use wood to build a small frame around the carriers with the carrier as the base then skin it and make a boat tail of sorts. Should increase range.

I saw some used tesla model S for sale in car gurus for about 25k. Those old model s are starting to get really cheap.

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