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18650 charger case - parametric for battery terminals
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TP4056-based 18650 charger case that's fully parameterized for readymade battery terminals/contacts. [Fusion 360]
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Updated at source:
Model information
- Source
- Printables
- Category
- Electronics
- License
- Creative Commons — Attribution
I had several different sizes of battery terminals/contacts that I wanted to use for building 18650 chargers with a TP4056 USB-C board. There are plenty 18650 charger cases to be found online, but none fit my battery terminals quite right.
Thus I decided to make a TP4056-based 18650 charger case model that's fully parameterized for readymade battery terminals/contacts. The parameters can be changed in Autodesk Fusion. I've added several variants as stls as well.
Features:
- parametrically adjustable for many battery terminal (bt) sizes
- allows for different sizes of bt at the anode & cathode
- snug press-fit assembly
- ventilation holes allow for visible status lights
Asumptions:
- bt and the charger pcb are line symmetrical vertically
- bt width & height (and charger width) both do not exceed the battery diameter
- charger module with USB-C input (17.5mm x 28mm) is line symmetrical as well