PortaPow Dual USB Tester

It is amazing that some power supplies have a relatively low voltage (V). It's even more exciting to see which USB charging cables are good and which aren't.

You can check it with this device.

With a good charging cable, the current (A) is relatively high. Just try different cables on the same USB power supply. The difference is gigantic in part. The higher the output current, the faster the battery is charged.

• USB1: Normal USB 2.0 port, enables data transfer and charging.
• USB2: Includes PortaPow SmartCharge adapter sold separately. It blocks data transfer, allowing you to charge from any USB socket without the risk of data hacking / viruses, and in some cases it can allow faster charging.
• USB-C data locking.
• 0-4000mA (4A), range 3-20V, accuracy up to 0.01A, 0.01V. Compatible with Qualcomm Quick Charge. Uses <13mA for more accurate reading
• 9 different memory slots for storing mAh values.
• It uses a backlit LCD display that can be seen in either total darkness or bright sunlight.
• The built-in extension cord allows the screen to be turned towards the user.
• Two data-lock slots can be used together to charge two devices from one slot.