The best of times. Battery technology has made huge advances in a relatively short amount of time. When batteries started being commercially produced in the early 1900s, lead acid or “wet cell” batteries were the only option. “Dry cell” batteries were made too, but they were for small applications such... Read more »

The post Lithium Batteries: Where We Came From, Where We’re Going. appeared first on Off Grid Ham.

The off-grid ham shack is fully energy self-sufficient, utilizing solar, wind, and other power sources, with a focus on low current devices for sustainable communication.

This tutorial demonstrates how to connect two 12-volt batteries in parallel using Power Queen 12.8V, 100Ah, 1280Wh lithium iron phosphate batteries. The provided YouTube link offers a detailed guide. For related content, explore building a solar-powered Off-Grid Ham Radio Station and information on radio-friendly MPPT charge controllers and off-grid communications.

The blog post highlights the benefits of Power Queen LiFePO4 batteries for off-grid projects over traditional lead-acid batteries, focusing on the better performance and cost-effectiveness in the long run. Additionally, it provides subscribers with information and discounts on Power Queen's Christmas offers, and illustrates how LiFePO4 batteries function in an off-grid system. It also includes descriptions and respective links of the batteries suited for specific needs in the US, Europe, and Canada.

The post warns against the use of QRO radio systems for off-grid or grid-down situations due to their high energy consumption. Instead, it advocates QRP radios, suggesting they offer greater efficiency and ease of use with renewable energy sources such as solar. The post also dismisses the idea of lowering the transmission power of QRO radios as a solution, arguing that it does not address issues with energy inefficiency and that such advice is misguided.

A classic never goes out of style. Way back in 2016 I posted the Off Grid Ham 100 Watts for $300 Solar Plant. Even today, that article is still hugely popular and one of the most viewed posts on this website. In a 2020 update, the $300 threshold not only... Read more »

The post The Off Grid Ham 100 Watts For $300 Solar Project -2023 Update appeared first on Off Grid Ham.

Exponential market growth! Lithium battery technology has made exponential market penetration in the last decade or so. Once an exotic and expensive platform, today nearly every battery-powered device uses lithium. Along with increased market acceptance comes attention, both good and bad. Most of the bad news circulating about lithium batteries... Read more »

The post Lithium Battery Fire Risks: Sorting It Out. appeared first on Off Grid Ham.

Ham Radio LiFePO4 battery powers 4500psi air compressor off-grid!

It’s better to have it and not need it, than need it and not have it. It’s been quite a summer! Flooding, extreme heat, wild fires, and (at this writing) a hurricane just tore up the Western USA and another storm is churning in the Gulf of Mexico. Every time... Read more »

The post Turn Thinking Into Doing (But Do Some Actual Thinking First). appeared first on Off Grid Ham.

The “holy grail” of solar energy? It’s been over six years since Off Grid Ham first covered perovskite solar. For the unfamiliar, perovskite solar is a new type of photovoltaic technology that is based on perovskite-structure crystals. There are several advantages. First, is efficiency. Perovskite solar is far more efficient... Read more »

The post Perovskite Solar Update. appeared first on Off Grid Ham.

Wish list. Most off grid hams are off grid only for portable operations. Many of them would like a larger, permanent home system but don’t know where to start or what such a project involves. If having an off grid home solar power system has been a longtime wish, this... Read more »

The post Planning For Off Grid Home Solar. appeared first on Off Grid Ham.

Graduation time. A lot of if not most off grid hams have only one battery in their system. Connecting a single battery is more or less self-explanatory. What should you do when you expand your system to include multiple batteries? Should they be in series? In parallel? Is one way... Read more »

The post Series and Parallel Battery Connection Techniques. appeared first on Off Grid Ham.

Let the dead rest. Now several weeks out from being the #1 ham radio news story, the Yaesu FT-818/817 product sunset has faded from attention. Anyone not already on the Yaesu platform will have to seek QRP alternatives. Most hams were surprised, some were disappointed, and some were strangely…glad? One... Read more »

The post QRP Alternatives: After The Funeral, What Comes Next? appeared first on Off Grid Ham.

After testing a modular HF radio go kit concept last May, I wonder why we don’t see more modularity in the ham radio community. Hello [...]

Stop making excuses and try! What we learn from the experience will be worth it! Hello Operators.Far too often on the channel, people say there [...]