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+--- Thread: Additional batteries and external battery chargers (/showthread.php?tid=8120)
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RE: Additional batteries and external battery chargers - Zweitaktmotor - 12-01-2019
(11-26-2019, 12:56 AM)tllim Wrote: Here is the back case file: https://app.box.com/s/g1n9cvg60cg66utdhs7m5my1ftvd0jj8
I had to search for this file format. Here is a viewer for Linux:
https://www.varicad.com/en/home/products/download/
RE: Additional batteries and external battery chargers - wibble - 12-06-2019
(11-30-2019, 03:14 PM)neilman Wrote:A phone battery is rarely just a battery, especially if it's user replacable. At a minimum it's likely to have a temperature sensor of some sort so it can be shut off if it gets too hot. It may have under/over voltage protection and overcurrent protection built in. It may include a battery state monitor chip to give more accurate battery info. It cold even contain something like they have on printer cartridges to try to stop people using 3rd party batteries, or to stop the battery charging unless it's in an approved device - IIRC Panasonic did this at one point with their camera batteries. The supplier's general point that the battery being the same physical size isn't the only thing you need to worry about is valid. The coulomb counter in the openmoko gta02 battery vs. the thermistor in the physically similar Nokia bl5c is a well documented example(11-30-2019, 02:50 PM)bcnaz Wrote:(11-21-2019, 03:27 PM)Luke Wrote:(11-21-2019, 10:55 AM)Freffyinkan Wrote:(10-24-2019, 04:34 PM)Luke Wrote: The battery used will be identical to the Samsung J7 3000mAh battery.
A quick search shows quite a variable size of the battery for "the" Samsung J7, depending on
year and full device name. And given suffices like neo, duos, etc, I may have missed a few more sizes.
The BJ700 and BJ710 are the common ones, so the BJ700* for the 2015 J7 might fit.
size in mm capacity example dev Samsung part
76.17 x 63.23 x 4.71 mm 3000mAh J7 2015 EB-BJ700BBC / BBE / CBE / ...
100.12 x 48.56 x 4.90 mm 3300mAh J7 2016 EB-BJ710CBC / CBA / ...
85.88 x 39.50 x 4.30 mm 3000mAh J7 Neo 2017 EB-BJ731ABE / ...
(names and interestingly "exact" sizes as mentioned in ebay listings, unverified; and I've no idea about user-visible diffs between e.g. BBC, BBE).
Luke, can you give exact device name or battery part name?
thx
\Freff he replied
76.17 x 63.23 x 4.71 mm 3000mAh J7 2015 EB-BJ700BBC / BBE / CBE /
When I contacted a vendor asking about the size of his ' J7 ' battery,
* His reply was that there is more to be concerned with than just size.
Apparently there are chips in the batteries with firmware that must agree with your particular phone...?
He 'suggested' using batteries that were approved by your particular manufacturer... errr ? ?
UNLIKE my truck, I just get the biggest/ highest rated that will physically fit in it.
I guess the circuitry in a cell phone is more particular ?
** Is there a particular model of phone we can compare the Pine phone to, to 'match-up' the battery ?
THANKS
I have no expertise in this area but I have heard of some OEM batteries that might contain the NFC component/aerial for a phone.
And the cheep "Chinese knockoffs" only provide the battery part itself with no NFC.
Subsequent fitment of the knockoff battery might make the basic phone work ok ... but not the NFC function any more.
That might be what is meant by checking "the battery chips".
RE: Additional batteries and external battery chargers - tophneal - 12-06-2019
(12-01-2019, 07:43 PM)Zweitaktmotor Wrote:(11-26-2019, 12:56 AM)tllim Wrote: Here is the back case file: https://app.box.com/s/g1n9cvg60cg66utdhs7m5my1ftvd0jj8
I had to search for this file format. Here is a viewer for Linux:
https://www.varicad.com/en/home/products/download/
If anyone can export this as a vector file (pdf, eps, etc,) please share!
RE: Additional batteries and external battery chargers - wibble - 12-06-2019
(12-06-2019, 07:39 AM)tophneal Wrote:(12-01-2019, 07:43 PM)Zweitaktmotor Wrote:(11-26-2019, 12:56 AM)tllim Wrote: Here is the back case file: https://app.box.com/s/g1n9cvg60cg66utdhs7m5my1ftvd0jj8
I had to search for this file format. Here is a viewer for Linux:
https://www.varicad.com/en/home/products/download/
If anyone can export this as a vector file (pdf, eps, etc,) please share!
It's not a simple export to convert a 3d object to a 2d vector representation while retaining useful information. Do you have any specific features in mind?
STEP is a common interchange format for 3D CAD models, and will open in a variety of packages. I've just opened it in FreeCAD and HeeksCAD, both of which are cross platform. If you want to 3d print parts you'll need to use something like this anyway.
One addition that would be useful is the position of the expansion connector pads.
RE: Additional batteries and external battery chargers - tophneal - 12-06-2019
(12-06-2019, 08:22 AM)wibble Wrote:(12-06-2019, 07:39 AM)tophneal Wrote:(12-01-2019, 07:43 PM)Zweitaktmotor Wrote:(11-26-2019, 12:56 AM)tllim Wrote: Here is the back case file: https://app.box.com/s/g1n9cvg60cg66utdhs7m5my1ftvd0jj8
I had to search for this file format. Here is a viewer for Linux:
https://www.varicad.com/en/home/products/download/
If anyone can export this as a vector file (pdf, eps, etc,) please share!
It's not a simple export to convert a 3d object to a 2d vector representation while retaining useful information. Do you have any specific features in mind?
STEP is a common interchange format for 3D CAD models, and will open in a variety of packages. I've just opened it in FreeCAD and HeeksCAD, both of which are cross platform. If you want to 3d print parts you'll need to use something like this anyway.
One addition that would be useful is the position of the expansion connector pads.
Good point! To be more specific, if anyone can export the shape of the back panel (as a flat plane,) with measurements (or at size) as a vector file, that would be great. Of course, including the cutout for the camera lens (and any others there may be) would be needed, too. I hope that made sense lol
I know cases are inbound, but we discussed some skinning options for the phone in another post, and they maybe possible to apply to cases as well, depending on the difference between the body and case.
RE: Additional batteries and external battery chargers - tahayassen - 12-06-2019
Here is a web app that can view stp files: https://www.emachineshop.com/free-online-step-file-viewer/
I would use a local CAD program if you're serious though.
RE: Additional batteries and external battery chargers - tophneal - 12-06-2019
(12-06-2019, 12:40 PM)tahayassen Wrote: Here is a web app that can view stp files: https://www.emachineshop.com/free-online-step-file-viewer/
I would use a local CAD program if you're serious though.
Thanks for the link!
I'll probably ask a CAd friend if he can take a look at the file to get the shape.
RE: Additional batteries and external battery chargers - wibble - 12-12-2019
Since things have gone a bit quiet I did a quick 2d conversion in FreeCAD. I think it's actual size, but wouldn't swear to it. Is that the sort of thing you're after?
pinephone-back.pdf (Size: 109.54 KB / Downloads: 497)
RE: Additional batteries and external battery chargers - wibble - 01-16-2020
(11-26-2019, 12:56 AM)tllim Wrote:(11-25-2019, 04:30 PM)hockleyj Wrote: I suspect once enough of the community, have the phone in hand, 3d printed battery adaptations will arise, either to adapt the contact pattern for other batteries, or even rear case adaptations to allow for larger batteries.... the possibilities are many.
as for external battery packs... should be plug and play for all the usb-c variants...
maybe the pine team could provide STL files for the back case, which would give the community an early leg up...
Here is the back case file: https://app.box.com/s/g1n9cvg60cg66utdhs7m5my1ftvd0jj8
Has this changed at all for the Brave Heart release? The photo in the January community update shows some changes on the phone, most notably for this use case having pogo pins on the phone instead of bare pads, but it's not clear if the back case has been changed. It would be useful to have more details on this mechanical interface too.