Category: Lighting

Letter Re: Advice on Stocking Up on Batteries

Sir; I was wondering: How many batteries should I store for all my radios, flashlights, smoke detectors, and so forth? I’m also planning to get night vision goggles, soon. I assume rechargeables, right? If so, what kind [of rechargeables], and who has the best prices? – T.E. in Memphis. JWR Replies: I recommend buying mainly nickel metal hydride (NiMH) batteries. Stock up plenty of them, including some extras for barter and charity. Unlike the older Nickel Cadmium (NiCd) technology, NiMHs do not have a “memory” effect. (The diminished capacity because of the memory effect has always been one of the …


Where Was Moses When the Lights Went Out? by Chuck Fenwick, Medical Corps

The power grid is down… maybe forever There are hundreds of scenarios which can cause the loss of electrical grid power. These include everything from a faulty relay to a strategic EMP strike that would precede a full scale nuclear war. There are, however, several inexpensive things which can be done in preparedness that could make the difference between life and death. Before explaining, “exactly what to do”, there are a few simple rules to keep in mind. 1) If you die, it’s your fault. 2) If you don’t have the gear, you will probably need it. 3) Be flexible. …


Letter Re: Biodiesel, Retreat Vehicle Fuel Flexibility, and Power Generation

Hello Jim, I am a prepper who is trying to do so on a very tight budget (wife, four kids, and two jobs just to make ends meet-you get the idea). Here are some random ideas that others might find useful. 1) Try drying your own fruits and vegetables for food storage. Whether homegrown or bought. This can be done inexpensively and dried food takes up very little storage space. 2) Consider making your own biodiesel. I am in the early stages of doing this myself. It’s not that hard. Just pay attention to detail and do it right. Besides …


Three Letters Re: Use of Force in Retreat Security–Planning for Rules of Engagement

Note from JWR: The discussion of use of force in retreat security (and “Less Than Lethal” means) has elicited large number of e-mails from readers. For the sake of brevity, and since so many letters covered the same ground, the following are just three of them. The first of these is from “FerFAL”. He is SurvivalBlog’s volunteer correspondent in Argentina.   Hi James, I’m glad to see that you are advising people to have non lethal weapons [in addition to guns] and (when the situation allows it) deterrent approaches when dealing with trespassers. Some situations require immediate lethal action, but …


Four Letters Re: Use of Force in Retreat Security–Planning for Rules of Engagement

James: First, thank-you for posting my question on SurvivalBlog. Second, thank-you for posting your thoughts. They are well thought out and very well presented. Your response sparked an additional couple of thoughts: Dogs have been man’s early warning and engagement system since the dawn of history. A barking dog tells the potential visitor that he lost any advantage of stealth and that he is facing a team. Two barking dogs are even better. Dogs over 50 pounds also represent a physical threat. The second thought is to split the axis (axes?) of confrontation. Killing flies by clapping one’s hands over …


Letter Re: Sizing a Retreat AC Power Generator

Hello Jim and SurvivalBlog Readers: I have enjoyed reading the vast knowledge shared on this topic and the awakening you have brought to us about our fragile economy! How can one put a price on a wake up call?,… well, it’s easy, renew your 10 Cent Challenge! Admit it, your year is probably up, but the education is still coming to you! I have not seen any talk on your site about a “miniature” diesel genset. My thought is that while the large Lister type genset’s are proven to last, … their will be a time when running something with …


Characteristics of a General Purpose Survival Flashlight by W. in Washington

Let there be light. We take it for granted these days, but in the woods on a dark night, during a power outage, or–most importantly–in a long-term survival situation, you’ll quickly learn just how important light is, and how important it is to choose your illumination tools wisely. My purpose here is not to recommend specific lights. There are web sites that can better help you make that decision. I’ll include a few links at the end to get you started. What I want to do is offer my opinions about what I think makes for a good survival light. …


Letter Re: Sizing a Retreat AC Power Generator

Jim – Great blog! I wanted to point out an important calculation everyone missed – internal combustion engines produce less power at higher elevation. Generators are (of course) rated at sea level. It’s important to de-rate generator capacity by 3.5% per 1,000 feet of elevation or your generator will be undersized. (A 5,000 “label watt” generator is [effectively] only a 4,000 watt generator where I live at 6,000 feet.) Density altitude on a warm summer day can easily be 2,000 feet higher than that. My rule of thumb: after sizing for load, size generously for elevation or you’ll be buying …


Four Letters Re: Sizing a Retreat AC Power Generator

Mr. Rawles: I saw that you recently posted my question to the blog, so I thought I’d update you. I ran the tests again and got what I believe to be a more accurate assessments. My second test showed the refrigerator consuming right at 2.7 KWH (2,700 watts) over a 24 hour period for an average of 112.5 watts-per-hour. Now mind you, that includes all the hours we were asleep and so no one was opening the door, using up ice, etc.. During hours of heavy usage it was using about 150 watts-per-hour. Test #2 for the chest freezer yielded …


Letter Re: The “Invention Nation” Documentary Television Series

Jim, I don’t know if this has been posted here or not. I have finished watching a series on the Science Channel called “Invention Nation“. The show primarily feature inventors who are inventing ways to “go green”. Many of these inventions and ideas fit in perfectly with being self-sufficient. Some of the topics are; used cooking oil for diesel engines, solar power technology, passive solar for heating homes and water, bicycle generators, etc… The series will rerun starting in March and may be worth a look for the preparedness minded. See the Invention Nation web site. Thanks to you and …


Letter Re: Sizing a Retreat AC Power Generator

Mr. Rawles: In attempting to size an emergency generator for my home, I have run across some interesting questions that I hope you and/or your other readers will be able to help me with. I lived through the blizzards of the 1990s here in the southern West Virginia coal camps, and I will never forget us and all of our neighbors being without power and unable to get out of our own driveways for 23+ days in 1993. It marked the very beginnings of my awakening to the necessity of being properly prepared. With that in mind, I am attempting …


Letter Re: AA Cells and Mobile Power

There was a discussion about batteries a few days back on SurvivalBlog. The writer advocated using AA NiMH cells almost exclusively, with adapters for devices requiring C and D cells. While I do agree that this is a good approach for some devices, there is certainly some merit to having full size 10 Amp Hour (10,000 MAH) batteries in high [current] draw or long term use devices. Not only is capacity significantly higher on larger cells, but the maximum safe current draw is higher too. Good NiMH C cells have 2-to-3 times the capacity of AA cells, and NiMH D …


Letter Re: Homemade and Expedient Vegetable Oil Lamps

Sir, I clicked on this link from your site, JOTW – Home Made Vegetable Oil Lamp. This got me to thinking about something I read about and tried once, some years ago. Take a tangerine, and using a knife, cut the nub off of the top, to expose the fruit, and using a spoon, separate the fruit from the peel and the segments from each other, leaving the sting like ” pith ” that runs from top to bottom, down the center of the segments, connected to the bottom. After letting the thing dry a bit, the pith is cut …


From the SurvivalBlog Archives: Start With a “List of Lists”

Start your retreat stocking effort by first composing a List of Lists, then draft prioritized lists for each subject, on separate sheets of paper. (Or in a spreadsheet if you are a techno-nerd like me. Just be sure to print out a hard copy for use when the power grid goes down!) It is important to tailor your lists to suit your particular geography, climate, and population density as well as your peculiar needs and likes/dislikes. Someone setting up a retreat in a coastal area is likely to have a far different list than someone living in the Rockies. As …


Prepare or Die, by J. Britely

Throughout my life I have been caught unprepared several times and while nothing seriously bad happened, it easily could have.  I have been lost hiking.  My car has broken down in very bad neighborhoods – twice.  I have been close enough to riots that I feared they would spread to my neighborhood, been in earthquakes, been too close to wildfires, been stuck in a blizzard, and have been without power and water for several days after a hurricane.   I managed to get myself out of each situation, I thanked God, and tried to learn from my mistakes.  I could have …