Jerr.e is the contemporary brother of the jerry can (portable EV charger / range extender). It allows you to charge anywhere.

Jerr.e is the contemporary brother of the jerry can (portable EV charger / range extender). It allows you to charge anywhere.

It's a Dutch invention.

It will come to market in Q4 2015 or in Q1 2016.

No price as of yet.

More info will be released on their website during the next months.

Link website:

Sin_Gas | 10 February, 2015

Nowhere did I see how many Killowatts this thing delivers. They talk range, but not power.

Its about the size of a little Honda Generator, so they are about 1 Kw. This would put about 3 miles of range per hour into the car.

Perhaps its as much as 3.3 Kw, the size of chargers in many citi cars. Most of this world is moving to 6.6 Kw.

Definitely a neat little package. Need more details. How much gas/propane does it carry. How long does it run? I could find none of these details on either of the star engines or the Jerre web sites.

Sin Gas

Benz | 10 February, 2015

@ Sin Gas

I made a phone call to the phone number which is mentioned at the bottom of the website.

The Jerr.e will use a maximum of 5 litres of petrol, and it will charge an EV with maximum of 10 kWh in a maximum time of 1 hour.

Red Sage ca us | 10 February, 2015

Ooh! So you expend 42 kWh of energy to deliver 10 kWh! Efficient. Wait... No it isn't!

Benz | 10 February, 2015

I think that when you somehow end up with an empty battery pack, and there is no charging option available nearby, then you will be glad you have this Jerr.e with which you can charge your EV so that you can reach the nearest EV charging station. It's a kind of a final option to charge your EV, I think. It helps to take away the range enxiety, I think (if you drive a short range EV, not a Model S obviously).

Rocky_H | 10 February, 2015

@Benz, quote: "I think that when you SOMEHOW end up with an empty battery pack..."

Wait, let's stop and examine that word "somehow". I find that kind of phrasing odd and unrealistic. Like people just suddenly find out when the car stops moving that their battery is completely empty. Really? People pay no attention at all to the meters or displays as they drive?

DTsea | 10 February, 2015

Yeah because you cant get electricity anywhere!

No, wait.....

DTsea | 10 February, 2015

Not to mention having to carry a gas can around. YUCK.

Sin_Gas | 10 February, 2015

Hello Benz

"The Jerr.e will use a maximum of 5 litres of petrol, and it will charge an EV with maximum of 10 kWh in a maximum time of 1 hour."

Thats pretty good. You use 5 liters, aprox 1.3 gallons of gasoline for 10 Kw, which gives you about 40 miles for a BEV. Thanks for that. Did they estimate a price?

Sin Gas

Earl and Nagin ... | 10 February, 2015

I'm skeptical about the 10 kWh in 1 hour. That is a 10 kW generator. That would be 240 volts at 42 amps. That's a fairly large generator.
Here's an example:
It has a 325 lb dry shipping weight.

vpoz | 11 February, 2015

tempting to take with you on long journeys .. possibly with an extra spare can of petrol ... would need a way to chain it to a wheel so can go and have a meal while the car charges up without worrying that it'll get stolen.

Benz | 11 February, 2015

No price has been announced yet.

It might be of some psychological importance to some people who are afraid of range anxiety. That they have a back up plan, just in case. Some people really do need it. Even if they might only need it ones or twice in a period of a few years. Like a spare tire.

hpjtv | 11 February, 2015

Looks to be a bit smaller than the vehicle's tire in the picture they have at the end of the webpage. I find it hard to believe anything that small can generate that much power.

milesbb | 11 February, 2015

702 watts/kg. A 10kW generator will weigh about 32 lb. Sounds like vaporware.

hpjtv | 11 February, 2015

Is that including the weight of the fuel too?

Scouse @ UK | 12 February, 2015

like the idea of this carry the Jerr.e in the car and if low on juice pull into normal garage buy some fuel and go charge in local carpark.

but would depend how many miles the unit will add within an hour and/or with a 5ltr of fuel?

As you say its a back up if only they could get enough power out of portable sola cells, or ones inbuilt into car roof :)

Brian H | 12 February, 2015

The car roof is too small to power anything but a lightweight bicycle frame style car for more than a few miles every day or two.

Scouse @ UK | 12 February, 2015

@ Brian H.....I know its near none useful but time and investment may make it a lot of time, which is why I said 'if only'

DTsea | 12 February, 2015

No scouse. Even at 100% efficiency, the 2 or 3 sq m available on a car cant provide much power. Cars arent big enough.

Real efficiencies of course are under 20%.

dborn | 12 February, 2015

They compare it with an i3 .

milesbb | 12 February, 2015

No mention of air emissions. It may not be legal to sell in first world countries. No mention of noise decibel, you may not want to be within 100' of this thing when it is running. Never been around a gasoline engine that you would want inside the car after fuel has been added, especially if a bit of fuel is spilled.

If this thing is real, emissions, noise, power to weight I suggest they change the packaging so that it can be trailer hitch mounted with aerodynamic molding that matches with the car it is mated with to minimize drag. Of course they would need to add a race car fuel cell bladder tank to minimize fire in the event of a rear end collision.

offworld | 14 February, 2015

There are several engineering solutions using existing light weight engines that will deliver about 9KW fairly reliably for a few hundred hours ... not something to use every day, but certainly something to use on special occasions.

probably the coolest are the 9KW jet turbine "turbo prop" engines like the JetCat SPT5 or the Jet Central KS Turbo Prop engine ... if you don't mind the sticker shock :)

A much cheaper 9lb DLE111 is probably a better solution. At least all the parts are easily available to rebuild the DLE's every few hundred hours.

Each of the RC engine solutions are very light ... few pounds for jets, and under 10lbs for twins. Many of the larger RC electric motors at higher RPM's will produce the power as a generator ... homebrew a rectifier, DC-DC converter and inverter.

The life on the small portable generators is about the same, they are a lot heavier, and cheaper.

Or use the cool 32lb Jere :)

I can completely see where it would not be vaporware.

milesbb | 14 February, 2015

" it would not be vaporware"
even if it complied with first world air and noise emissions?
I did see a reference to the Wankel engine, seems reasonable.

Red Sage ca us | 15 February, 2015

By the time there is an efficient means to carry a useful amount of extra electrical energy around in a container the size and weight of a typical 5 gallon fuel can used for gasoline, electric vehicles will generally have a range of a few thousand miles.

offworld | 25 February, 2015

Most of the small engines can use "clean" propane or LNG with some minor design engines, so yes, I can see someone engineering a "clean" fuel 9-15kw generator solution. Freedom Motor's small rotory I believe meets CA ARB limits. Even a two cycle with direct injection can. So there are multiple sources to engineer a very light weight fuel efficient generator from.

Something sized around 9-15kw, can produce most/all of the 14HP necessary to move an S85 at 60mph .... just needs to produce power at the battery bus voltage to bypass the charger/inverter/storage losses of the battery pack.

With such an "alternative energy" solution, the range of an S85 with 5 gallons of fuel, is simply not an issue.

Yes there is a carbon footprint ... so is most electric produced from coal or natural gas, but with the transport and distribution losses that lower efficiency of the electrical grid.

mike.baensch | 8 November, 2015

Just a thought - what would happen if you attached a charge cable to a fully charged Tesla powerwall. Instant eJerry-can/range-extender, albeit a little big.

tony27nine | 9 November, 2015

I have an idea...
Why not make the generator larger, say 3 litres, and permanently fix it in the front of the car where the frunk is. It can be connected to the drive wheels through some kind of clutch and gear arrangement so that when or should I say if, the battery should ever run dry then you have sufficient power to either recharge the battery and or simply use it to drive you to a charger. You could call it a hybrid.... oh, wait......