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Mobile battery charger

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Creation quality: 5.0/5 (1 vote)
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Publication date 2021-02-19 at 15:34
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Published to Thingiverse on: 2017-01-23 at 09:44
Design number 300431
c4sfer

c4sfer

3D printer file info

3D model description

The idea was to give a second life to an unused li-po rc car battery. Since it has a capacity of 16.000mAh I thought that will be a good idea to recycle it as a power bank, so I got a dual PCB battery charger on ebay https://goo.gl/jVrJUL and designed a box to put all together.

Features:

Motherboard comes with protection function: Charging overcharge protection, over-discharge protection, overcurrent protection.
Intelligent output device after charging full, automatically stop charging, to prevent mobile phones overcharge.
Output voltage and current stable, will not harm user devices.

Specifications:

Micro USB input: 5V 1A
USB Output: 5V 2.1A / 5V 1A(Dual USB interface)
Charging display: intelligent digital display
Batteries Type: liquid lithium-ion batteries (18650)
Product Size: 57mm x 28mm
Screen size:27mm x 17mm

Installation instructions:

The circuit board is connected to the battery negative B-, B + is the positive, do not connecting reversed, connecting reversed will burn the board, the battery is connected in parallel welding, assembling battery. Note that the insulation between the battery and the circuit board, battery lead not to touch the circuit board, so as not to cause a short circuit.

The box has an extra port for quick charging with a hobby charger, but I don't really recommend to do this or the % of battery displayed will be wrong.

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