Page 3 - Test Results
To evaluate the performance of the UGREEN MagFlow Pro Magnetic Power Bank, I broke it down into three tests. The first test involves charging the power bank. The second and third tests are real-world results from charging an Apple iPhone 17 over USB Type-C and Qi2 wireless, respectively. All tests were done between 20% to 80% to represent the optimal operating range of the battery as well as reflecting real-world use cases.
The Apple iPhone 17's battery is 3692 mAh with a nominal voltage of 3.887V, which translates to 14.35Wh capacity. It has 100% indicated battery health. As mentioned on the previous page, the UGREEN MagFlow Pro Magnetic Power Bank has two 5000 mAh batteries with a nominal voltage of 3.92V each, which means the capacity is 39.2Wh.
The first test is charging the MagFlow Pro from 20% to 80%. It took 1 hour 20 minutes to recover 60%, or 22.2Wh. At peak, the input showed 29.1W on the screen, and tapered off to 8.5W at 80%. This seemed accurate, as my wall power meter showed a consumption of 31W when the power bank itself showed 29.1W, not accounting for losses by the USB Type-C charger. The average charge rate is calculated to be 16.65W, which is reasonably fast.
In my second test, I charged an Apple iPhone 17 from 20% to 80% using the built-in USB Type-C cable. It took 36 minutes to bring it up 60%, or 8.61Wh. At peak, the output showed 26.2W on the MagFlow Pro. The iPhone 17 technically supports 40W peak charge rate and the MagFlow Pro supports 45W output, but 40W charging typically happens when the state of charge is below 20%. The average charge rate is calculated to be 14.8W, which does not seem limited by the MagFlow Pro. The MagFlow Pro's charge status reduced 24%, or 9.41Wh, as a result of charging the iPhone 17 from 20% to 80%. That represented a 91.5% charging efficiency, which is excellent.
In my third test, I charged an Apple iPhone 17 from 20% to 80% using the Qi2 wireless interface. The iPhone 17 has the OEM Apple silicone case on during charging. It took 52 minutes to get the iPhone up 60%, or 8.61Wh. At peak, the output showed 15.9W on the MagFlow Pro. The iPhone 17 technically supports 25W peak charge rate over the Qi2 wireless interface, but 25W charging typically happens when the state of charge is below 20%. The average charge rate is calculated to be 9.93W, and the MagFlow Pro does not seem to be a bottleneck. The MagFlow Pro's charge status reduced 39%, or 15.29Wh, as a result of charging the iPhone 17 from 20% to 80%. That represented a 56.3% charging efficiency, which is low compared to USB Type-C, but expected for wireless charging.
Overall, the UGREEN MagFlow Pro Magnetic Power Bank's performance seems aligned with its specifications.
Page Index
1. Introduction, Packaging, Specifications
2. Physical Look - Hardware
3. Test Results
4. Conclusion
