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Thread: SB-28's (external power)

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  1. #1
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    SB-28's (external power)

    What does everyone use for external power to get your SB-28's to last longer while in the feild? From what I have heard the cameras themselves are not the limiting factor it is more so the flashes. Was curious as to what everyone does to make the flashes have a longer duration in the field.... thanks

  2. #2
    https://photography-on-the.net/forum....php?p=8010673


    https://photography-on-the.net/forum...d.php?t=525726



    HELLO TO SUPPLY MY SB28 AND SB 24 NIKON I USE THESE VERY EFFECTIVE METHODS THAT EXTEND THE LIFE OF MY FLASH FOR WEEKS AND ADDITURE MONTHS IN SOME CASES.
    I PUT YOU LINKS BECAUSE ON THE TOPIC THERE IS REALLY ON THE NET JUST TYPE DIY EXTERNAL BATTERY FLASH SB28 NIKON.

  3. #3
    Administrator -jeff's Avatar
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    My favorite method to extend life of the Nikon SB flash is to use two dowels and a couple brass wood screws. Then run the wires to two or three banks of AA battery holders.

    20200405112728-bd126343-xl.jpg

    20200405112727-29776df3-xl.jpg

    Cheap, but works very well.

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    Ok ..... I did similar and used plastic pipe that a fellow camera trapper, Tim Torell, told me he does. The pipe allows the wires to run up through the plastic pipe. Very similar idea to the doweling. He mentioned to me to get the plastic pipe from Home Depot which you can actually get two sizes if you want. AA size and AAA size if necessary for your project or projects. Just cut the plastic pipe the length of the AA or AAA batteries you are using. I also just used normal screws and soldered the wires to them as shown. I also used 5.5*2.1mm DC pigtails for ease connecting and disconnecting. I plan on using these throughout the builds and flashes. I wanna do up a few builds if possible. You can reference the pictures ..........

    IMG_5714 - Copy.jpg

    IMG_5715 - Copy.jpg

    IMG_5713 - Copy.jpg

  5. #5
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    Here is a couple more pics as well .... I used a dremel to open up a small hole for the wires to run out of the flash ..

    IMG_5711 - Copy.jpg

    IMG_5716 - Copy.jpg

  6. #6
    Quote Originally Posted by -jeff View Post
    .... Then run the wires to two or three banks of AA battery holders..
    Can I see how the battery holder arrangement is made to keep the power last long

  7. #7
    Administrator -jeff's Avatar
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    Two of these AA battery holders in parallel would double your capacity.

    20200507112240-81ed542f-la.jpg

  8. #8
    Thank you Jeff. Some folks say this method can fry the flashes. Is there a big risk?

  9. #9
    Quote Originally Posted by -jeff View Post
    My favorite method to extend life of the Nikon SB flash is to use two dowels and a couple brass wood screws. Then run the wires to two or three banks of AA battery holders.

    20200405112728-bd126343-xl.jpg

    20200405112727-29776df3-xl.jpg

    Cheap, but works very well.

    Hello.

    I have never used SB28 before, especially with external battery supply.

    My idea is to use two Double D Holders with two AA adapters each from Camtraptions (this way each Double D holder will take six AA batteries), connect them in a row and then plug them with dummy batteries into the flash unit. This way, I will have 12 AA batteries and overall voltage of 6V (or 4.8V with NiMH rechargeable).

    Usually, all battery holders of this kind use battery clip connectors for 9V batteries.

    Unfortunately, the 9V connectors come with pre-soldered wires that are 26AWG (this gauge is not very thick). I can see that the wires in your pictures look similar gauge.

    My question is: Is there any chance the 26AWG wires of the connectors can overheat during charging the flash unit?
    Last edited by Awanawanga; 10-29-2023 at 12:00 AM.

  10. #10
    Administrator -jeff's Avatar
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    Quote Originally Posted by Awanawanga View Post
    Hello.

    I have never used SB28 before, especially with external battery supply.

    My idea is to use two Double D Holders with two AA adapters each from Camtraptions (this way each Double D holder will take six AA batteries), connect them in a row and then plug them with dummy batteries into the flash unit. This way, I will have 12 AA batteries and overall voltage of 6V (or 4.8V with NiMH rechargeable).

    Usually, all battery holders of this kind use battery clip connectors for 9V batteries.

    Unfortunately, the 9V connectors come with pre-soldered wires that are 26AWG (this gauge is not very thick). I can see that the wires in your pictures look similar gauge.

    My question is: Is there any chance the 26AWG wires of the connectors can overheat during charging the flash unit?
    The wire in the picture is 22ga and works fine for a short run.

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