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Thread: Testing a foldable solar panel today.

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    Testing a foldable solar panel today.

    I want to give a portable 60 watt panel my daughter to keep her Garmin InReach powered in the event of SHTF. It has a built in USB port and I know it easily provides USB at 2 amps. I've tested that. But that's only 10 watts. I am going to connect it to a cheap MPPT controller and see how much I can get for charging some LiFePO4 batteries. I'll report later
    "There is simply no justification or provocation for Russiaís choice of war. Itís an example of one of the oldest of human impulses: using brute force and disinformation to satisfy a craving for absolute power and control."
    Joseph Robinette Biden Jr.
    26 March 2022


    "Donald Trump and the MAGA Republicans represent an extremism that threatens the very foundations of our republic."
    Joseph Robinette Biden Jr.
    01 September 2022

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    I suggest one of the 80,000ma battery backups with a built in folding solar panel. The battery will be ready when needed for probably 6 or more charges and the solar will help get it back. If you want your could use your larger solar to help charge the battery.

    This is my method for SHTF comms. Using a HT ham radio. Are you sure there will be a satellite for the inreach text service? It can be shut down a the flip of a switch and will be.

    This is what mine looks like, but with 80,000ma battery. Costs less that this on amazon to boot.
    https://www.survivalfrog.com/product...UaAjOzEALw_wcB


    Let me also add no shtf electronics are worth a shit unless you store them and transport them in a faraday cage/bag.
    Last edited by Big Dummy; 10-05-2022 at 12:02 PM.
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    Quote Originally Posted by Big Dummy View Post
    I suggest one of the 80,000ma battery backups with a built in folding solar panel. The battery will be ready when needed for probably 6 or more charges and the solar will help get it back. If you want your could use your larger solar to help charge the battery.

    This is my method for SHTF comms. Using a HT ham radio. Are you sure there will be a satellite for the inreach text service? It can be shut down a the flip of a switch and will be.

    This is what mine looks like, but with 80,000ma battery. Costs less that this on amazon to boot.
    https://www.survivalfrog.com/product...UaAjOzEALw_wcB


    Let me also add no shtf electronics are worth a shit unless you store them and transport them in a faraday cage/bag.
    Thanks. She already has a couple of those....or similar. Those solar panels are 5 or 6 watts. In the winter, low sun in temperate zones, you will get 3 watts and maybe 10Wh per day (13 would be the max even if you constantly reoriented them). For 5 volt usb thats, 2Ah per day. A 80,000 mAh battery pack will take 40 days to charge. Rough numbers but you get the idea.

    Indeed, you could charge the inreach mini in a day... a half decent day in the winter. And I'm glad she has those. But there's some days that are heavily overcast. And lots of things that use USB to recharge power.... Flashlights, UV water sterilizer, communications, etc. So I'm providing something bigger now and yet still portable and using a separate cheapo ($40) mppt controller to charge some LiFePo4 batteries in addition to providing USB power for her inreach mini on a very suboptimal day

    So far... overcast day October in New York state... 3 Amps into the LiFePo4 battery pack. That's 40 watts and as good as I was hoping for from that foldable panel ( that I quickly just eyeballed wrt angle) and cheap charge controller.
    Last edited by Call_me_Ishmael; 10-05-2022 at 01:19 PM.
    "There is simply no justification or provocation for Russiaís choice of war. Itís an example of one of the oldest of human impulses: using brute force and disinformation to satisfy a craving for absolute power and control."
    Joseph Robinette Biden Jr.
    26 March 2022


    "Donald Trump and the MAGA Republicans represent an extremism that threatens the very foundations of our republic."
    Joseph Robinette Biden Jr.
    01 September 2022

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    https://www.amazon.com/FOOTIC-Bicycl...%3D%3D&sr=8-18
    Get a couple of these for her stationary bike

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    Quote Originally Posted by Big Dummy View Post
    I suggest one of the 80,000ma battery backups with a built in folding solar panel. The battery will be ready when needed for probably 6 or more charges and the solar will help get it back. If you want your could use your larger solar to help charge the battery.

    This is my method for SHTF comms. Using a HT ham radio. Are you sure there will be a satellite for the inreach text service? It can be shut down a the flip of a switch and will be.

    This is what mine looks like, but with 80,000ma battery. Costs less that this on amazon to boot.
    https://www.survivalfrog.com/product...UaAjOzEALw_wcB


    Let me also add no shtf electronics are worth a shit unless you store them and transport them in a faraday cage/bag.
    BTW... not sure of anything. Satellites can be taken out with EMP or solar storm. Switches can be flipped. All the people at the ground station could be dead. Daughter could be dead. I could be dead. I don't assume anything and I dont assume that I am prepared for every possible variation of SHTF.

    I simply thought I'd share my test with a portable solar panel. That was all I intended to do.
    Last edited by Call_me_Ishmael; 10-05-2022 at 01:26 PM.
    "There is simply no justification or provocation for Russiaís choice of war. Itís an example of one of the oldest of human impulses: using brute force and disinformation to satisfy a craving for absolute power and control."
    Joseph Robinette Biden Jr.
    26 March 2022


    "Donald Trump and the MAGA Republicans represent an extremism that threatens the very foundations of our republic."
    Joseph Robinette Biden Jr.
    01 September 2022

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    Quote Originally Posted by JMWinPR View Post
    https://www.amazon.com/FOOTIC-Bicycl...%3D%3D&sr=8-18
    Get a couple of these for her stationary bike
    ???

    I'm posting about a little solar panel. I have solar panels. I have hand crank generators. I could connect them to bicycles since i have a few just for SHTF. I have a wind turbine.

    But right now I'm posting about one small portable solar panel now with a third party cheap MPPT charge converter.
    "There is simply no justification or provocation for Russiaís choice of war. Itís an example of one of the oldest of human impulses: using brute force and disinformation to satisfy a craving for absolute power and control."
    Joseph Robinette Biden Jr.
    26 March 2022


    "Donald Trump and the MAGA Republicans represent an extremism that threatens the very foundations of our republic."
    Joseph Robinette Biden Jr.
    01 September 2022

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    Not gonna go into detail. But my test tells me that...
    This foldable panel does what it says it does.
    Screenshot_20221005_144400.jpg
    And this charge controller is in fact an MPPT charge controller that charges LiFePo4 batteries.
    Screenshot_20221005_144517.jpg
    Last edited by Call_me_Ishmael; 10-05-2022 at 02:14 PM.
    "There is simply no justification or provocation for Russiaís choice of war. Itís an example of one of the oldest of human impulses: using brute force and disinformation to satisfy a craving for absolute power and control."
    Joseph Robinette Biden Jr.
    26 March 2022


    "Donald Trump and the MAGA Republicans represent an extremism that threatens the very foundations of our republic."
    Joseph Robinette Biden Jr.
    01 September 2022

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    I've got a sixty watt panel like this:

    81LxdzD-ZPL._AC_SL1500_.jpg

    81-ec1LXC2L._AC_SX522_.jpg

    It was around 160 dollars from Amazon a few years ago and puts out 60 watts and 19 volts. Two USB ports and one 12 volt port for charging car batteries. During the 2021 deep freeze where we were without power for nearly 3 days and it was cold! I unfolded it and hung it in a window and charged my batteries up and my phone just as fast as my charger plugged into the wall charges them. I'm sure the sunlight reflecting off the snow helped! Nice thing to have if you need it.
    Last edited by Captain Kirk!; 10-05-2022 at 02:31 PM.

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    Quote Originally Posted by Call_me_Ishmael View Post
    I want to give a portable 60 watt panel my daughter to keep her Garmin InReach powered in the event of SHTF. It has a built in USB port and I know it easily provides USB at 2 amps. I've tested that. But that's only 10 watts. I am going to connect it to a cheap MPPT controller and see how much I can get for charging some LiFePO4 batteries. I'll report later
    With 60 watts a MPPT charger or any charger is not going to do much good for battery charging.

    You really need to up the solar wattage a lot to make storage practical.

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    Quote Originally Posted by Big Dummy View Post
    I suggest one of the 80,000ma battery backups with a built in folding solar panel. The battery will be ready when needed for probably 6 or more charges and the solar will help get it back. If you want your could use your larger solar to help charge the battery.

    This is my method for SHTF comms. Using a HT ham radio. Are you sure there will be a satellite for the inreach text service? It can be shut down a the flip of a switch and will be.

    This is what mine looks like, but with 80,000ma battery. Costs less that this on amazon to boot.
    https://www.survivalfrog.com/product...UaAjOzEALw_wcB


    Let me also add no shtf electronics are worth a shit unless you store them and transport them in a faraday cage/bag.
    Still too small to be of any real use.

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