Prepper Book Festival 8: The New 2000 Hour Flashlight

Avatar Gaye Levy  |  Updated: November 24, 2020
Prepper Book Festival 8: The New 2000 Hour Flashlight

What better way to start off the new “Prepper Book Festival” than with The New 2000 Hour Flashlight?

I say this because, from the get-go, I was part of the feedback team that Ron used to fine tune the technique in the first edition and get it ready for prime time.  Although I don’t know for sure, my guess is that thousands of copies of the original “Flashlights” is out there and likewise, scores of prepper’s have used Ron’s technique to build their own survival flashlight with a usable beam and battery life of 2000+ hours.

New 2000 Hour Flashlight - Backdoor Survival

That brings me around to today.

As you may know, Eveready stopped producing the lantern style flashlight used in the original book.  So, rather than leaving folks up a creek, Ron completely overhauled the book and rebranded it The NEW 2000-Hour Flashlight and all is good.  In doing so, he expanded the type of flashlight that could be MacGyver’d so there are now lots of choices.  One goes out of production?  No big deal.  There are others.

Back on topic, Ron has set aside three copies of the print version of The New 2000 Hour Flashlight for 3 lucky readers.  He also told me he has some additional books up for grabs but he is holding me hostage for those until I send him some interview questions.  Fair enough.

But I still want to offer you something today and so, with his permission, I share his chapter on batteries to give you a feel for some of the incredibly useful information in his book.

Batteries – An Excerpt from The NEW 2000-Hour Flashlight

The purist might object to the way I use the terms ‘battery’ and ‘cell’ in this manual. Technically speaking, a battery consists of multiple cells. I’m aware of the distinction but I’ve chosen to use the terms as they appear in everyday speech. Picture two kids squabbling on the sofa. Mom intervenes. “Fred! Give him back his flashlight cells.” Would anybody really say that?

D-cell test results

As regards to D-cell longevity, I tested Duracell, Energizer, and Rayovac side by side (all alkaline). The Duracell D-cell outlasted the other two by a fair margin.

NEW 2000 Hour Flashlight - Backdoor Survival

As regards to price, Sam’s Club had Duracell alkaline D-cells in a 10-pak for $12.40 including sales tax (and it was not an ‘on sale’ price). That’s $1.24 each. Less than any other store. Less than any other brand.

Duracell is thus the winner, providing the biggest bang for the buck amongst alkaline D-cells.

A little exposé

Although Duracell won the D-cell contest, when it comes to the big, square 6-volt batteries, different story. Typically, 6-volt batteries contain four F-cells. F-cells are the same diameter as D-cells but are longer.

A reader’s comment (in regard to the first edition of this book) tipped me off. He noted that Duracell 6-volt batteries contained not four F-cells but four D-cells. I couldn’t believe it! In my mind Duracell was the premier brand, $9 at Lowe’s; 50% more than the $6 Rayovac at Wal-Mart.

So I performed some surgery to get to the bottom of things.

NEW 2000 Hour Flashlight - Backdoor Survival

The Rayovac contains four F-cells.

NEW 2000 Hour Flashlight - Backdoor Survival

And here’s a Duracell with four D-cells inside.
Hey! Them cardboard spacers don’t come cheap, lemme tell ya.

A test showed that, whereas the Rayovac 6-volt gave 2000 hours of useful light (in the original 2000-hour flashlight), a Duracell 6-volt gave only 1100 hours.

Note that the 6-volt Duracell pictured above contains three Duracell Coppertops and one Duracell Procell. From my reading, Coppertops and Procells are interchangeable, built to the same spec. (And it would appear, judging by what I found inside the Duracell 6-volt, that they really are interchangeable. Duracell certainly thinks so.) Why does Duracell market two different brands made to the same spec? Dunno. I guess it’s just an example of corporate decision-making in action.

It’s also interesting that Duracell advertises a shelf life of ten years for their D-cells. But take those same D-cells and put them in a 6-volt case and, amazingly, the claimed shelf life shrinks to seven years.

NEW 2000 Hour Flashlight - Backdoor Survival

ABOVE Left: Ten-year shelf life
ABOVE RightSeven-year shelf life.

But enough scandal mongering. To summarize our test results (in a comparison of Rayovac, Energizer, and Duracell batteries), amongst alkaline D-cells, Duracell is both the longest-lasting and carries the lowest price tag. Amongst alkaline 6-volt batteries, Rayovac is both the longest-lasting and carries the lowest price tag.


The Giveaway

Here is the part you have been waiting for because I know you are going to want to have a copy of the print version of this book.  There will be THREE winners.

a Rafflecopter giveaway

The deadline is 6:00 PM Pacific next Tuesday with the winner notified by email and announced on the Rafflecopter in the article.  Please note that the winner must claim their book within 48 hours or an alternate will be selected.

The Final Word

Ron and I have been pals for awhile and I both trust and respect his opinion on all things that have to do with emergency lighting, not the least of which is flashlight power.  And you know that I have a thing about flashlights!  You can never have too many.

Let us pull out all stops on this one and convince Ron we want more of the same!  For more about Ron, be sure to visit his page here on Backdoor Survival at Meet Ron Brown.

Enjoy your next adventure through common sense and thoughtful preparation!

If you enjoyed this article, consider voting for Backdoor Survival daily at Top Prepper Websites!  In addition, SUBSCRIBE to email updates and receive a free, downloadable copy of my e-book The Emergency Food Buyer’s Guide.

Spotlight:  The NEW 2000-Hour Flashlight

The first edition of this book (“The AMAZING 2000-Hour Flashlight”) contained 54 illustrations. This edition (“The NEW 2000-Hour Flashlight”) contains 128 illustrations.

The first edition showed how to modify one flashlight, a specific Eveready model, such that it ran 2000 hours on one battery. Unfortunately, Eveready has replaced that particular light with newer models. This edition shows how to obtain extended run times using other brands – one of which runs 2200 hours, better than the original. (Incidentally, 2200 hours equates to three months of continuous running, night and day.) In general, the modifications or “hacks” are accomplished by adding a resistor (30 cents) to a  flashlight.

Simplicity is the watchword. Wire glue (a glue containing carbon that conducts electricity) can be used in place of solder. Wire glue eliminates soldering and reduces the task from a techie project to Junior High School level.

What with floods, hurricanes, tornadoes, tsunamis, typhoons, earthquakes, blizzards, and downed power lines, there’s always a blackout somewhere. If people in general knew the information in this book, life would be a lot easier for a lot of folks.

Plus: The Preppers Guide to Food Storage

No list of books would be complete without my own book, The Prepper’s Guide to Food Storage. The eBook print version is available.

Help support Backdoor Survival. Purchases earn a small commission and for that I thank you!


A Prepper’s Guide to Whole Food at Half the Price – Now Available

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71 Responses to “Prepper Book Festival 8: The New 2000 Hour Flashlight”

  1. My GF RustH won this book for me. The book is not very thick which is misleading, because the information inside is pretty cool, easy to understand, AND the mods are easy! After reading the book I chose the Dorcy lantern because of its ‘brightness’, and installed the suggested LED bulb. I have not modified the Dorcy lantern as of yet, and I may not. Instead I purchased 2 of the Rayovac adapters and modified those. I like the fact I can use a modified adapter in just about any 6V lantern. The hack on these adapters was easy thanks to the instructions and the illustrations contained in the book. The ‘hack’ works as advertised! Thanks for writing this book and giving folks some very cool prepping info! 🙂

  2. I do not have a favorite type of flashlight or battery, because I have always assumed they are all the same. Now that I have seen some proof that they are not, I will have to do a little investigating of my own.

  3. No favorite flashlight, but for the last year or so I’ve been carrying a AA powered pocket clip light with me everywhere. My wife harassed me at first for doing it, but I’ve since had need for it a few times, and so has she. I don’t leave home without it!

  4. Since I have salvaged and modified so many flashlights it can be daunting to pick a favorite, but I must say the most used daily is the “Pal-light Safe light” and when more power is needed the “Duracell Daylite”. Both are led, the Pal-light requires a 9 volt battery, and the Duracell requires 2 cr123 batteries. I have rechargeable batteries for both with various moods of recharging.

  5. Can’t tell you exactly how many flashlights we have…been collecting them most of my adult life…I probably have 5 or six just in the pickup truck! And as long as I don’t let the batteries leak into them, they keep lighting up our life.

    Must say…I’m a little miffed about the 6V battery comparison…please take your brightest light and shine it on that 4-D-cell vs. 4-F-cell scandal! And thanks for the heads-up!

    Thanks for all you do.

  6. It has been my experience that the Ray O Vac batteries will tend to leak before they even go bad. Have had several flashlights ruined before I stopped using them.

  7. Some wonderful lady put me onto a little block light that fits on the end of a 9 volt battery. These are my light of choice. They are just like reading glasses, I have them scattered all over the house.

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