battery

Hi, I make rechargeable USB battery banks for a hobby and I had to learn about how the capacity is tested on these. The rated capacity on the label is NOT what you will get out of the USB port and here's why. Battery banks are mostly made with lithium batteries. Some are the flat pack lithium...

OK, so I bought a little 20W solar panel off amazon to start tinkering and learning solar power. I have the panel itself, the little charge controller, and I plan to get a AA/AAA battery charger with a car adapter, and a 12V automotive socket. The instructions with this little panel were ... ah...

I decided I needed a small solar generator to power low current devices while camping and at the BOL during construction. I was only looking at recharging cell phones, cameras, and occasionally an inflatable air mattress, etc...I looked at possibly purchasing something like the the GZ Yeti 150...

(Note: I tried posting this 10 min ago, but I was knocked off line. Apologies if it's duplicated.) I'm preparing for leaving the metro and moving up north to a property I have. It's very rural, so I would like to add a second battery to my Chevy Silverado 1500 CC. At the time I purchased...

Hi, I'm having some trouble with my inverter, and I'm hoping to find someone who has faced (and resolved) this sort of issue. We live completely off-grid, and have a 650AH battery bank charged by 1KW of panels, and charge-controlled via two Tracer MPPT charge controllers. Overall, it works...

Do any of you guys know if a cr123 battery is constructed different on the inside then a traditional aa, or aaa battery, I dropped my tac light and it quit working, so I thought it was broken. Just out of desperation i put a new battery in and it worked again :confused: The battery that was in...

Had a couple of power outages in the last couple months lasting about 6 hours. In houston that means the house gets a little warm and stuffy. I just bought a Ryobi One + fan at Home depot for $40. http://www.homedepot.com/p/Ryobi-18-Volt-ONE-Dual-Power-Portable-Fan-Tool-Only-P3320/205022215...

I recently bought an e-reader to hold all the ebooks I will need for a SHTF scenario as reference (medical information etc.) and I thought, How would I charge my device in the wastelands? well if you have batteries (and I am sure you would use a solar panel or something to charge the batteries...

Hello I tried to make a small fire with a battery (Duracel, AA, 1.5V) and kitchen-aluminium. I tried it a few (10-20) times and finally it worked out, I got a few red fire-lines on my aluminium and succeeded to make it burn using a small tinder. However I almost every time get a bit of...

As we all know, in survival situation we need to have a more open mind with the resources that are at our disposal. Items that we use in everyday life have a new purpose when they are in a survival situation. That being said, I want see how creative and open-minded you could be! How would you...

A friend of mine is a hardcore flashlight hobbiest and he made this series. I wanted to share it with you all because this depth of knowledge on the topic is fantastic. He also told met that if you could have any flashlight in an apocalypse, it would be the Malkoff Turn-key HA Flashlight (MD2)...

Hi All I wanted to quickly shoot through my Ham Radio plan and see what people think and/or what I am forgetting. My focus was low price and versatility, while keeping in mind I doubt I will get into the hobby much more than turning it on while working in the garage, just to listen into the...

The September 2012 issue of QST has some pretty good stuff in it regarding emergency communications. Power carts, radio in a bag, portable HF antenna, putting a 75 meter NVIS antenna into a tree, and the one I really enjoyed was "Storage Battery Planning..." The storage battery article...

If you are thinking of putting in a battery bank, adding solar panels or wind generators, wondering what sun hour exposure rating you have in your area, wondering about what size converter you need, etc., etc., etc., then this is a good resource that you may want to bookmark or subscribe to here...

Ok folks, I was given the green light to make a poll on if there's a high enough demand for a thread dedicated for Renewable energy projects, discussions, and questions. To save from having to post in the General/Disaster Preparedness/DYI sections, I propose a new Thread for topics related to...

* Warning this guide is aimed at first time buyers of quality LED lights. Those looking for $5 lights look elsewhere. * Caution to experts. There will be simplification, technical heresy, summarization, cpf blasphemy and general boiling down of information. Not for the faint hearted...

hi all. wondering if anyone has info on storing disposable batteries (AA and AAA types) kept dry and sealed in plastic, how long will duracel and similar type batteries last and stay charged? i am currently doing up some 3 day emergency caches which will be deposited at stand-off locations from...

I am a big fan of Nutnfancy and I know I have posted articles before questioning his knowledge but don't get me wrong he is amazing and my bug out bag is based on his advice. Anyway... Maglite 2 Cell AA, no LED upgrade (or any other for that matter). The Maglite manual says that you should only...

I'm looking for some good rechargeable batteries. So far I've been hard pressed to find a rechargeable that is close to the wattage of a disposable. Is it even possible? This isn't for my BOB or emergency situations, that is what I have a stockpile of disposables for. It's mainly for my...

I have always had an interest in solar powered devices. Tonight i was doing some looking around for a charging solution for batteries like AA,AAA,cr123a. I wanted to pass this along to everyone to take a look at. My search was based on charging a couple AAs and cr123a's(3V). Here is what i came...