NightStar CS2 Flashlight

Renewable Energy, Shake Flashlight

Batteries Not Included

The electricity just went out, and you’re searching for a light. What are the odds you have a working flashlight in that cabinet? The NightStar CS2 is charged by shaking, so it’s the flashlight you’ll want on hand, even if it’s been sitting, unused for years. You don’t have to worry about dead batteries, because there aren’t any batteries in this flashlight. You just shake it, and the energy generated is converted into electrical energy via a magnet that’s passed back and forth through a coil of wire. Roughly 90 seconds of shaking yields about 20 minutes of illumination.

The co-inventor of the world’s first renewable energy shake flashlight and co-founder of Applied Innovative Technologies, Inc. is Steve Vetorino. His flashlight is known for its resilience and reliability and used by the military, emergency personnel and outdoor adventurers around the world. Last year AIT donated hundreds of NightStar flashlights to the non-profit organization Village of Hope. Their donation allowed both children and grownups to walk safely at night in a village surrounded by forest dangers and no lights.

A NightStar flashlight is durable, lightweight and waterproof. And it’ll float if you drop it in water. In fact, there’s not much you can do to destroy the NightStar. So ignore it, abuse it, forget about it — it doesn’t matter, NightStar will be there for you when you really need it.
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Grommet Launch Conversation

  • Steve

    My name is Steve Vetorino and I’m the crazy inventor that came up with the idea for the no-battery shake flashlight. It’s hard to believe it’s been 13 years since the idea popped into my head and what a wild ride it’s been for all of us involved since that day. And now I have the honor of presenting the culmination of all those years of hard work on the Daily Grommet! I’m eager to discuss with you any questions you have regarding the NightStar CS2 flashlight – from the scientific principles that make it work, to the engineering features incorporated into its construction, to the many aspects of business that make it possible to sell products around the world. So grab a cup of Joe, sit down and relax, and let’s chat…

  • Mark
    2/22/2010 12:27 PM

    Hi Steve,

    Great invention! I can already see dozens of uses for it! Question: Does the energy source (the capacitor) hold any charge while it's in storage or do you have to shake it a bit when you first go to use it?



  • Julia
    2/22/2010 12:29 PM

    I love the fact that it's also lightweight. Perfect for long trail hiking!

  • Kate
    2/22/2010 12:32 PM

    Are all shake flashlights on the market yours? I have seen one but it seemed that you need to shake it harder than what the video shows...did I see an earlier version, or someone else's version? You are brilliant to have figured this out!

  • Steve
    Steve – Special Guest
    2/22/2010 12:33 PM

    Hi Mark and thanks for your compliment! In answer to your question, the capacitor will hold a charge for several weeks but over that time the stored energy will gradually leak out. The rated leakage current is about 10 micro-amps per hour. In my case, I keep a light by my bed side and typically shake it for about 10 seconds every 3 or 4 days to keep it nearly fully charged and ready to go at a moments notice.

  • Steve
    Steve – Special Guest
    2/22/2010 12:40 PM

    Hi Kate. In answer to your question, most of the shake flashlights on the market are not ours. We have the patents but that didn't stop the knock-offs from flowing into the country and unfortunately their poor quality damaged the reputation of shake flashlight technology in general. And thank you for your compliment but if I were brilliant I would have spent money marketing our flashlight when all the knock-offs were hitting the market rather than defending our patents - which as it turned out was a waste of time and money - oh well, at least I'm a little wiser...

  • Katherine
    Katherine – Grommet Team
    2/22/2010 12:59 PM

    @Steve - wow, I bet you have a fascinating story to tell.

    This is a great place to point out the differences between your product and the knock-offs, how the knock-offs cut corners to reduce costs and its effect on the end product. (My son was given a knock-off for Christmas...I'd have to say it 'glows' versus 'shines' and is not useful in any emergency.)

    The people in the Daily Grommet community are willing to pay more for the better version when they understand the quality that they are purchasing.

  • liz
    2/22/2010 1:17 PM

    does the shake flashlight work in extreme weather conditions?

  • Steve
    Steve – Special Guest
    2/22/2010 1:25 PM

    Hi Katherine. There are several significant differences between NightStar and all other shake flashlights. First, nearly all knock-offs use rubber bumpers to rebound the charging magnet, which is extremely inefficient. Shaking energy is therefore lost in bumpers rather than being converted into electrical energy in the coil. By comparison, NightStar uses repulsion magnets to rebound the charging magnet, which is the most efficient way of de-accelerating and re-accelerating the charging magnet. Second, NightStar uses high end electrical components, inclusive of a StarCore LED, Gold-film capacitor and Fusion-Nd magnets. The housing of NightStar is also made of polycarbonate (bullet proof glass). The knock-offs are made of acrylic, which is extremely fragile under impact conditions. Finally, NightStar flashlights have undergone independent laboratory testing and are backed by a 5-year warranty. The knockoffs have never been tested and typically only have a 3 month warranty.

  • Steve
    Steve – Special Guest
    2/22/2010 1:32 PM

    Hi Liz. In answer to your question, NightStar works in extreme hot and cold conditions. It also works underwater and has passed the MIl-810 explosion test, which demonstrated that the light can be used in explosive environments filled with chemicals such as aviation fuel, methane, propane, and hydrogen gas.

  • Cindy
    3/23/2010 12:57 PM

    I got this as a prize in the "Daily Grommet" drawing- and I love it.

    Our area is prone to power outages- so a handy flashlight that needs no batteries gives me peace of mind.

  • Katherine
    Katherine – Grommet Team
    3/23/2010 1:29 PM

    @Cindy - congratulations and we're delighted that this shake flashlight has found a home where it will be useful! Thanks for stopping by.

  • Rodd Craig
    Rodd Craig
    5/1/2011 7:04 PM

    Hi, how do i buy the Nightstar flashlight in Australia. Is there a distributor?

    It looks like a fantastic product,.. Rodd.

  • Katherine
    Katherine – Grommet Team
    5/1/2011 10:02 PM

    @Rodd Craig: This is a great product no matter where in the world you are. They list Gavmanak and OOMPHLab as Australian distributors.

The launch day conversation has ended. Please direct further questions about this Grommet to our Community Experience Team.