Charging my LiFePO4 batteries with a Hand-crank Generator
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- Опубликовано: 9 мар 2024
- The off-grid ham shack is now 100% energy self-reliant. It has taken some time to develop an effective grid-down energy strategy. Today, the station acting as a TOC (Tactical Operations Center, can stay in the fight during a prolonged grid-down disaster.
This video covers charging with the hand crank generator, in addition to solar power and wind generator.
HUge thanks to @S2Underground for inspiring this video!
73
Julian #oh8stn #hamradio
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01:23 Grid-Down Energy Strategy
02:30 Station power configuration
06:25 Comms Gear
14:39 Safety features
15:45 Final thoughts Disclosure: Some of the links above are affiliate links. This means that, at zero cost to you, I will earn an commission if you click through the link and finalize a purchase. Disclosure: Some of the links above are affiliate links. This means that, at zero cost to you, I will earn an commission if you click through the link and finalize a purchase. 
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Ah yesss, the hand crank Gen set for the GRC RADIO SETS of WWII! Felt sorry for our predecessors who had to wind on one of these back in the day! Semper Fi!
As an additional benefit, the hand crank generator is also a great way to warm up when it is cold! Man, you have really been getting after it!
🙏👍 Thank you!
Sometimes it's hard to see the forward motion from the outside looking in.
73
Julian oh8stn
Hi Julian. Greetings from Portland, Oregon. I like the crank charger idea. Thank you for the video. It's appreciated. My crew at work and I send people to your RUclips channel. You are an asset to the hobby of Ham Radio. Thank you for being there. 73 my friend.
Many people don't quite understand that you can have multiple charge controllers connected in parallel to the same battery or string of batteries. It is a very useful approach.
Sadly yes. Hopefully we can share the concept with the community.
I need to make this setup!!!
I bet with a few 3d printed sprockets, you can gear it for a longer throw chain or step paddles to get more energy to effort.
I saw pictures from WWII of a small metal windmill on top of a building a city in the northeast with a generator connected to a battery . I found that interesting. Where there's a will there's a way ! Appreciate your channel !
This really needs the Rocky theme song!
🤣👍
Todo sirve!
this is a great video. If you were to do a little in depth it would be greatly appreciated. Where did you get the crank? How much was it? How long does it take to get a full charge? But awesome video.
What brand/model is that hand cranked generator? Thanks.
BONUS >>> you save on the gym membership! Redundancy is key, we all know the 2-is-1 rule. However the tertiary benefits can be found too!
I still have tower envy, LOL !!! I'm working with telescopic fiberglass masts. They serve me well, but no match for what a tower could support.
I hit Lithuania on 17M SSB the other day. Maybe we could do a voice contact sometime. My window into Europe is roughly 1300-1700 UTC.
Be well!
73s
Julian, did you cobble that power system together yourself or did it start life as an install that you added to? Thanks for your vids...semper fi
Hello brother.
This has been an ongoing project since 2018. The process of getting where we are now, started in early 2023.
Here's the breakdown.
oh8stn.org/blog/2023/12/21/building-an-off-grid-solar-powered-ham-shack/
Semper Fi (Now more than ever).
I would like to bolt one to a bicycle that sits in a stand yp frame (like an exercise bike).
Julian, back in the day as a Grunt, didja ever have to crank a generator in the field for the field radio?
What brand/model is hand cranked generator? Do you have a link on where to purchase? Thanks, your videos are very helpful and I always look forward to your new ones.
Like how your ham shack is small and super efficient. What kind of lighting are you using in your shack? Do they cause any RF interference?
Thanks 👍
That's only about a third of the shack. The rest of it is used as a space for "just in case" gear and supplies. I'm very careful not to show that part of it.
I found some LED ceiling panels for RV. They are DC, but cause no notable RF.
I'll try to write a blog post on them next week.
73
Julian oh8stn
How much power are you putting into the batteries in this clip? I've tried to find one of these a couple different times, but I don't even know the manufacturer
I have been wondering how effective the hand crank generator is for you. Do you have the numbers of what it outputs? I have several smaller hand crank generators that are supposed to be rated at 5V, 900mA but I think this is quite optimistic. After several tests with various devices and crank speeds, I can charge a smartphone 1% for every 15 minutes of steady cranking. I have also noticed that the optimal crank speed is about 2 revolutions per second as cranking faster does not produce additional current while cranking slower produces less. Maybe you already posted somewhere, but I am curious about your setup and experience with it.
Perhaps it's time to do a detailed video on this topic. Then I can share the numbers. Not a lot of work, so perhaps this is something I could do later this week.
Have you seen any of S2 underground videos on ghostnet?.
Of course 👍
Interesting concept but at your latitude (and lack of sun this time of year) you must be cranking all day for a reasonable charge...no?
True, but. My station draws such low current and has enough solar to keep on going, provided it gets a couple of hours of daylight each day. If so, the hand crank generator is barely used. It isn't easy though.