Ring Intercom dummy battery USB-C v2.5

Updates:

19.09.2025 - Added a bit longer (0.5mm) clip as some Intercomes have different tollerances. Check which is working better in your case.
03.06.2025 - I reuploaded body stl file as 8mm screw was a bit too short to firmly clamp battery contact nickel strips.
15.05.2025 - I added new version 2.5 which is using new voltage regulatro. As for now I have 100% success ratio with this module
24.04.2025 - As many TC4056 units arrive faulty to me I am working on v2.5 which will be using another voltage regulator, i am waiting for next batch to confirm that faulty rate is much smaller. Update should be expected in 5 days. 
28.03.2025 - Fix typo in Assembly instruction and add more information about flat cable connection.

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Dummy battery for your Ring Intercom. Now you can permanently power your intercom from standard 5V charger via USB-C connector or from 5V transformer via flat cable.

Description:

This is dummy battery for your Ring Intercom. Now you can permanently power your intercom from standard 5V charger via USB-C connector.
It also contains connector for 15mm 23 gauge audio flat cable (HX-FL20505WS -> https://fransonic.com/hxfl20505ws/ or aliexpress) to connect it directly to 5V transformer and hide the cable.
NOTE: 5V Flat cable feature is fully functional from v2 version.

Electrocins:

From version 2.5 (RECOMMENDED):

 Mini 5V lithium battery charging discharging module:
- Aliexpress: https://www.aliexpress.com/item/1005007287125488.html 

Below version 2.5 (NOT RECOMMENDED ANYMORE):

Type-C USB-C TC4056 5V 1A Li-ion Lithium Battery Charging Board:
- Amazon.com: https://a.co/d/cn77zI7
- Amazon.es: https://amzn.eu/d/8Z3ok5x
- Amazon.de: https://amzn.eu/d/d2npDRk

Hardware:

M3x8mm screw -> secure back plate
M3x8mm screw -> secure pins cover
M3x8mm screw -> secure voltage regulator
M3x8mm screw -> secure battery clip
2x M3x8mm -> secure nickel strips pin contacts
2x 5mm wide 22mm long nickel strips -> for battery contacts
2x 40mm long 2mm thick cable -> connect Voltage regulator output to battery contacts (nickel strips)

Optional (for 5V flat cable connector)
2x 5mm wide 100mm long nickel strips -> for flat cable clamp
2x 80mm long 2mm thick cable -> connect Voltage regulator 5V input flat cable clamp (nickel strips)
M3x8mm screw -> secure flat cable clamp

Printing:

Layer height: 0.2
Supports needed for:
- clip_v2.5.stl
- back_plate_v2.5.stl
Brim: No
Material: all PLA (PETG for the clip but PLA also should work)
Files are in mm and are oriented in intended printing orientation.

Assembly:

Assembly instructions you can find in attached PDF file

IMPORTANT!
Issues found during prototyping phase:
1. If after assembly your Ring Intercom is not booting at all (no blue light) try with a different USB charger. I saw that not every charger with support for fast charging (variable voltage) is working with this voltage regulator (TC4056). I am recommending any old 5V USB charger with 1A output.
2. From my experience those regulators are not the best quality and depending from where you will get them and how lucky you are there could be some faulty units. I saw that from my 10 regulators 5 were working as they should but other 5 were resetting periodically resulting in Ring Intercom reboot loop.
3. New module, used in v2.5 is recommended as for now I have 100% success ration with that module