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Power & Charging

USB-C Smart Charger 3A

Fast, regulated charging for Raspberry Pi 4 and battery packs. Automatic voltage adjustment and overcharge protection built in, so your projects stay powered safely.

  • Output 3A max
  • Connector USB-C
  • Protection Overcharge, voltage regulation
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USB-C Smart Charger 3A with cable on white background

Why this charger works for makers

  • Fast charging for Pi 4

    Delivers the 3A current Raspberry Pi 4 needs for stable operation under load, especially when running motors, sensors, or vision processing.

  • Automatic voltage regulation

    Adjusts output to match connected device requirements, preventing overheating and extending the life of batteries and boards.

  • Overcharge protection built in

    Stops charging when the battery reaches full capacity, so you can leave it plugged in without damaging Li-ion or NiMH packs.

  • Universal USB-C compatibility

    Works with any USB-C device or battery pack that accepts standard charging protocols—no proprietary connectors or adapters needed.

Technical specifications

Connector type
USB-C
Maximum output current
3A
Voltage regulation
Automatic
Protection features
Overcharge, short-circuit, overheat
Compatible devices
Raspberry Pi 4, USB-C battery packs, mobile electronics
Cable length
Standard AC to USB-C output

Common use cases

Powering Pi 4 during development

The Raspberry Pi 4 draws more current than earlier models, especially when you connect peripherals like motors, cameras, or external drives. A 3A charger ensures the board doesn't throttle under load, preventing unexpected shutdowns during long builds or compute-intensive tasks like object detection.

Use this charger at your workbench for stable power during prototyping and testing. The automatic voltage regulation adapts to the Pi's power draw, so you don't need to monitor current levels manually.

Common questions

Can I use this charger with Raspberry Pi 3 or earlier models?

Yes, but earlier Pi models use micro-USB, not USB-C. You would need a USB-C to micro-USB adapter. Since Pi 3 draws less current (2.5A max), the charger will automatically regulate down to the appropriate level.

Will this charger work with my phone or tablet?

It will charge any USB-C device, but it doesn't support fast-charging protocols like Power Delivery or Quick Charge. Your phone will charge at standard USB rates, which may be slower than its original charger.

How do I know when my battery pack is fully charged?

Most battery packs with USB-C input have an LED indicator that changes color or turns off when charging is complete. The charger itself will stop supplying current once the pack's internal management board signals full capacity.

Is it safe to leave the charger plugged in all the time?

The overcharge protection prevents continuous charging after the battery is full, but it's still good practice to unplug when not actively charging to extend the charger's lifespan and reduce idle power draw.

What should I do if the charger gets warm during use?

Some warmth is normal during fast charging. If it becomes uncomfortably hot to touch or smells unusual, unplug it immediately and contact support. Make sure the charger has ventilation and isn't covered by fabric or other materials.