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  1. HANKMARS

    Why no more than 4 batteries in any particular string?

    I will jot down your radio license number and look it up soon. I, too, have an X account and use my proper name. Of the few women I responded to in DMs, they all had money schemes. Most just downright scams but a few with legitimate proposals, nonetheless, I was not a taker as dealing over the...
  2. HANKMARS

    Why no more than 4 batteries in any particular string?

    I could use some tutorage in the field of radio communications. I'll get the model and make of my walkies and send along with a photo, I would appreciate any clues you may be able to give me. Regarding your father's work, and others from that era, I just stand in awe at what was accomplished...
  3. HANKMARS

    Why no more than 4 batteries in any particular string?

    I do not understand the question fully. Haboobs are seldom seen Those are the huge dirt storms, right?
  4. HANKMARS

    Why no more than 4 batteries in any particular string?

    I have been an amateur astronomer since about age 12. I lived in central Iowa. My dad bought a used silo dome, cut out a section from top to bottom and attached castors to a plywood ring fitted to the bottom of the dome. The unit was placed on a circular foundation of maybe 3 feet high and had a...
  5. HANKMARS

    Why no more than 4 batteries in any particular string?

    I'm 71. Doubt homesteading is a route for me. There is a lot of government owned land in Arizona. I was quite surprised how diversified the land is in AZ. A lot of desert but also huge tracks of Pondarosa Pine. Many lake area, not to mention the man-made reserviors. I am in central east Az. The...
  6. HANKMARS

    Why no more than 4 batteries in any particular string?

    Very interesting and informative and sound advice. I currently have 3 battery packs. Two packs consist of 4 li-ion 100 Ahr batteries connected in parallel, each supplying their own 12 V 3000 W inverter. The third pack consists of 4-12 V, glass mat, lead/acid, 35 Ahr batteries. Two sets, of 2...
  7. HANKMARS

    Why no more than 4 batteries in any particular string?

    A move back to nature is not the driving force for me but rather affordable land. I had intended to construct my own dwelling then came across a "foldable container house" and purchased it. Actually the first house I have purchased. What would be considered a starter house in Phoenix will run...
  8. HANKMARS

    Why no more than 4 batteries in any particular string?

    If overcharging due to cell failure of some type or other, which no doubt would result in further destruction, I feel free to chain as many batteries together as I deem necessary. The LiFePO4 batteries I have purchased do have BMS and supposedly guard against problems of over temperature, short...
  9. HANKMARS

    Why no more than 4 batteries in any particular string?

    I'm not sure exactly how the different Groks are affected by one's verification status. Just last week I unsubscribed from X's verification plan. Pinching pennies at the moment. Shortly before that, I was chatting with Grok 2 about what happens when the fractals of an infinite perimeter...
  10. HANKMARS

    Why no more than 4 batteries in any particular string?

    I am using LifePO4 batteries for my solar electric systems. With each battery comes a small manual. They all state to not use more than 4 batteries in any given string, rather in parallel or series configuration. What is the reasoning behind that warning? I have another tab open which is...
  11. HANKMARS

    Searching for legitimate arduino forum

    Thank you
  12. HANKMARS

    Searching for legitimate arduino forum

    I am new to Arduino and am looking for a no bs forum to answer questions specific to Arduino hardware and software. Suggestions?
  13. HANKMARS

    What are the 3 wires of a computer fan hooked to?

    Project update. I powered up the unit with only 4 Peltier devices active. Ambient temp was 87 degrees F. At 60 seconds the cold coil was at 61 degrees F. After I received my new 100 A DC to DC converter, whose sole purpose is to supply required current to remaining 6 Peltier devices, I wired it...
  14. HANKMARS

    What are the 3 wires of a computer fan hooked to?

    The radiator/fan combo was purchased from amazon. They have no spec data so I went to the supplier site who also had no data. I believe the supplier was DIYhz. In the product reviews, one of the customers mentioned that the fan performed well at low speed as well as high speed. I will try to ask...
  15. HANKMARS

    What are the 3 wires of a computer fan hooked to?

    Thank you. I applied 12 V+ to the red wire and the fan does indeed run. Second question; From reading customer reviews of this cooler, I gathered that the fan has two speeds. Is the fan speed determined by a signal on the yellow wire? e.g. 0 V = low speed and 12 V+ = high speed? By the time you...
  16. HANKMARS

    What are the 3 wires of a computer fan hooked to?

    I have a fan with 3 wires. A black, red and yellow. Most often, yellow is a 12 volt line so I hooked yellow wire to +12 and black wire to ground but fan does not run. What is the proper wiring scheme?
  17. HANKMARS

    High current, 40 A to 100 A, current limiting devices other than a resistor

    The Poteous site is a good read. CRC of course contains enough data for a 4 year college course. Do you have to have a membership or pay a fee to get CRC data? It seems that the hard copy book was around 500 dollars, about 30 years ago. I will keep both links. Thanks. Current state of test fixture.
  18. HANKMARS

    High current, 40 A to 100 A, current limiting devices other than a resistor

    I am using 10 Peltier devices connected in parallel. Each device is rated 12 VDC, 15 Amps. My concern is with initial power up. In prior experiments, at the instant of power on, the Peltier device appears as almost a dead short. Once the diode junctions begin to heat up, the device will limit...
  19. HANKMARS

    LiFePo4 100 AH battery charger

    My need is to maintain my 100 AH LiFePo4 batteries during periods of non-use. A bare bones, 120 VAC powered charger. If it has capability to charge 12 volt lead/acid batteries, all the better, as long as it is either a no fail auto system or has a selector switch. Fast charging is not the goal...
  20. HANKMARS

    Effects of using 50 Hz power on a 60 Hz device.

    A few months ago my computer contracted a relatively hostile virus. Totally my fault for venturing into no man's land and disregarding anti-virus warnings. I have yet to seriously set my computer down and try to recover data. So, I am cruising thru cyberspace on a tablet using my phone's hotspot...
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