Original EN-EL23 batteries cost about $55. Even though the battery can last up to 3 days in my Nikon B700, I want to have several replacement batteries. Not wanting to buy some cheap rip-offs, I wanted to design my own battery case which could be printed on 3D printer, some small PCB with over- and undervoltage protection circuits and compartment for a battery.
At the same time, I want to make a version which would omit the battery inside and have a cable which would go out of the camera's battery compartment into a 18650 battery holder. Probably, this version would have some built-in polarity protection circuit to protect camera from the battery being inserted incorrectly.
A drawing of the hollow battery cut into two pieces to be 3D printed. No attachment of inside parts was designed yet.
Consider the model to be under CC-BY-SA 3.0 license. Upon request it can be released under the WTFPL license.
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05/04/2020 at 18:35
A drawing of the hollow battery. No attachment of inside parts was designed yet.
Consider the model to be under CC-BY-SA 3.0 license. Upon request it can be released under the WTFPL license.
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04/24/2020 at 09:49
A drawing of the battery. No attempt was made yet to accomodate the inner parts. This is just a drawing of the battery, in case anyone had any other idea what to do with the battery.
Consider the model to be under CC-BY-SA 3.0 license. Upon request it can be released under the WTFPL license.
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04/13/2020 at 09:27
Hi, yesterday, I printed a prototype of the battery. Currently it is the hollowed-out version (look into uploaded files) cut into two pieces. Therefore it still lacks features for screwing together the battery case and for mounting the PCB with contacts. However, it seems that it can be printed just fine, it fits properly into the camera and holes for the contacts are on the right positions. Since this is a first time for me when it comes to designing a 3D model, I would say that it is going better than expected. I know that it could look better if I removed the ridges on the top of the battery, because these cause the print to become spaghetti-like at the edges, but since it is possible that other cameras which use this battery may have "anti-ridges" which serve to reject wrong battery type with similar case, I am not going to remove them. Next time, I hope I will have all the mounting features done and case printed so that I can go on designing the tiny PCB with contacts.
I have measured the battery and drawn a model of it. It can be downloaded from this project page in case anyone wants to use it for their own project. Consider the model to be under CC-BY-SA 3.0 license (may be changed if Nikon gets upset), however if you would feel any urge for even more copyleft license, I can release it under WTFPL.
Right now, it is only the outer outline of the battery. No pockets inside, no features for fixing the PCB inside. Will come later, stay tuned!
@Arsenijs I tried typing EN-EL23 into the search bar and my project came up as the top answer, so I don't think it will cause any problems with finding it. I want to make crystal clear, that no one should expect this project to be finished, ever. I expected some icon to show up on the project icon, but the "scrapped project" flag is just a tiny thing buried under the pictures section where no one will ever see it. So I believe that this is the preferable way to tell people about the state of the project.
Nice! Would suggest you share your work as you go, using Hackaday.io built-in file upload function - if your project is never finishes, at least there's a starting point for others =)
I plan on finishing it, since it's for my only camera. However, I am not sure what you mean by file upload function - the 3D model for the battery is already uploaded in this project.
Hi, this project is now canceled since I bought a new camera at the end of summer. Consider the model to be under WTHPL license - use it any way you want, I do not care of this project anymore.
also, no need to put "scrapped project" in the title, it will make it harder for people to find this project, I suggest you remove it. Just check the "scrapped project" option in the project settings (as you've already done), and add "scrapped project" sentence in the description if you want.
@Arsenijs I tried typing EN-EL23 into the search bar and my project came up as the top answer, so I don't think it will cause any problems with finding it. I want to make crystal clear, that no one should expect this project to be finished, ever. I expected some icon to show up on the project icon, but the "scrapped project" flag is just a tiny thing buried under the pictures section where no one will ever see it. So I believe that this is the preferable way to tell people about the state of the project.