Build your own DIY MagSafe-enabled wireless power bank featuring 3D-printed casing, rechargeable batteries, and a wireless charging transmitter module.
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This MagSafe-enabled wireless power bank functions by combining multiple electronic modules housed inside a custom 3D printed enclosure to deliver both wired and magnetic wireless charging. At the core of the power system are two rechargeable batteries, which are wired together to supply a stable energy source. Because the battery voltage needs to be regulated and managed efficiently, the setup incorporates three 5V step-up charging BMS (Battery Management System) modules. These modules are responsible for managing the charging and discharging cycles of the lithium-based cells while stepping up the output voltage to a steady 5 volts. To enable cable-free charging, the circuit integrates a dedicated wireless power transmitter module paired with an inductor coil. When powered, the transmitter module drives alternating current through the inductor coil, generating an oscillating magnetic field. A compatible smartphone or device placed on the outside of the power bank couples with this magnetic field, inducing a current that safely charges its internal battery. Finally, the inclusion of a MagSafe circular magnet mechanically guides the mobile device into the exact physical alignment required for optimal inductive power transfer, ensuring maximum energy efficiency and preventing the phone from slipping away during use.
Why Build This
Create a custom, magnetic portable charger for your smartphone that matches the convenience of commercial MagSafe accessories.
Learn practical EV battery management and power distribution concepts by working with multi-module BMS circuits and step-up regulators.
Gain hands-on experience integrating 3D-printed mechanical enclosures with custom electronics and wireless power transmission hardware.
Real-World Application
Portable charging for smartphones, wireless earbuds, and small IoT devices using magnetic wireless alignment technology.
Skills You'll Learn
Lithium battery parallel wiring
BMS power regulation
inductive wireless power transmission
soldering and circuit assembly
3D-printed enclosure integration
Safety Precautions
Ensure lithium batteries are connected in parallel correctly and handle 3D-printed enclosures and soldering irons with standard electronic safety precautions.
Technology Tags
WIRELESS CHARGING
MAGSAFE
3D PRINTING
BATTERY MANAGEMENT SYSTEM
POWER BANK
TP4056
Frequently Asked Questions
The three 5V step-up charging BMS modules help manage the power distribution, charging safety, and voltage regulation across the power bank's circuitry and battery setup.
The MagSafe magnet physically aligns your smartphone with the internal inductor coil to ensure efficient wireless power transfer without manual repositioning.
You should strictly use the specified rechargeable 3.3V batteries (2000mAh or 1000mAh) and wire them in parallel correctly as outlined in the safety guidelines.
Gallery
This page is part of Kitkraft's Project Hub — a curated collection of electronics & robotics projects gathered from the maker community to help students and hobbyists discover and learn to build. Kitkraft does not claim authorship of the original project, and makes no representation as to the accuracy, completeness or safety of third-party source material. The summary and "How It Works" explanation above are AI-generated, rewritten with reference to the original tutorial — not a reproduction of it. Full credit and a direct link to the original source are provided above. If you're the original creator and have a concern about how your work is represented here, please contact us and we'll address it promptly.
