Post update: What is it?

Since I started exploring ways to provide continuous power for my digital cameras, I have been guided by two questions. 1. Will it work? 2. Is it safe? I watched a YouTube video recently that reminded me of the latter question.

External Power for Cameras, the Safest Options by Graham Houghton (14:53) inspired me to search online for an inline voltage meter with USB connectors.

Drok USB Tester

After watching several more YouTube videos, I decided to buy a Digital Meter USB Tester Multifunction Digital Voltmeter/Ammeter/Power Meter/Capacity Tester/Charger 5in1 USB Panel Meter, available from a company in the United States called “Drok.” The MSRP for the Drok USB Tester is $15.99. The one I ordered from the Drok Store on Amazon cost $9.99.

The device features one male USB connector for input, and two female USB connectors for output.

GyroVu continuous power adapter

The next photo shows a GyroVu USB TO PANASONIC DMC-GH2 (DMW-BLC12) BATTERY 40″ CABLE w/ 3.1A USB POWER SUPPLY. The device can be used to provide continuous power for my Panasonic Lumix DMC-FZ300 superzoom bridge camera.

The “USB Charger” — a small white power brick — was plugged into a 120V AC electrical outlet. Look closely at the full-size version of the following image. Notice the USB Charger output is 5V=3.1A. (3.1A = 3100mA.)

Testing the GyroVu continuous power adapter

The Drok USB Tester was connected to the 3100mA USB connector on the GyroVu USB Charger, shown above.

The USB cable for the GyroVu dummy battery was connected to “Output 1” of the Drok USB Tester; the dummy battery was inserted into the battery compartment of my Panasonic Lumix DMC-FZ300.

The last photo — the same one featured in my last blog post — shows the LED display on the front of the Drok USB Tester after my camera was powered on, indicating the output voltage of the USB Charger was 5V and the camera was drawing a current of 0.45A.

Panasonic Lumix DMC-FZ300 (121mm) plus Raynox DCR-250.

The output voltage of the GyroVu dummy battery is 8.0V so the “dummy” battery must contain a DC-to-DC step-up converter.

I plan to use a multimeter to test the actual voltage output of the GyroVu dummy battery, that is, as soon as I can find my RadioShack mulitimeter. (Someday I’ll get organized so I know where everything is!)

Sidebar: Deep Dive into Tech Specs

The Web page for the GyroVu continuous power adapter shown above says the product is for the Panasonic DMC-GH2 camera. How could I be sure the device would work with my Panasonic Lumix DMC-FZ300 digital camera?

The Panasonic Lumix DMC-FZ300 uses a Panasonic DMW-BLC12 Rechargeable Lithium-Ion Battery (7.2V, 1200mAh). Turns out that’s the same battery used by the Panasonic DMC-GH2. I know this thanks to Wasabi Power for providing a list of Panasonic cameras that use the DMW-BLC12 battery. (See the Web page for the PANASONIC DMW-BLC12 AC POWER ADAPTER KIT WITH DC COUPLER FOR PANASONIC DMW-DCC8, DMW-AC8 BY WASABI POWER, a product similar to the GyroVu continuous power adapter.)

Editor’s Note: The MSRP for the Wasabi Power continuous power adapter is $23.99 — nearly $10 less than the MSRP of $33.95 for the GyroVu USB Power Supply. You might be wondering why I didn’t buy the Wasabi Power device.

Notice the Wasabi Power device uses round connectors rather than USB connectors. I prefer the GyroVu devices because the USB connectors on their dummy batteries give me the flexibility to use them with my Anker PowerCore+ 26800 PD 45W battery as a power source for select Canon, Fujifilm, and Panasonic digital cameras that I own.

Related Resources

This blog post is one in a series of posts related to continuous AC power and long-lasting battery power for select Canon, Fujifilm, and Panasonic digital cameras.

Copyright © 2021 Walter Sanford. All rights reserved.


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