Portable charger voltages and cheap USB Power Monitor suggestion?

[angerdan]

USB power meter/tester thread - YZXStudio, Power-Z, RDTech and more.

4/Feb/2018 UPDATE: This thread has been repurposed to include more brands and models into it. YZXstudio is no longer the only company to make high quality USB testing devices. New brands such as Power-Z, AVHzY and RUIDENG have come up with many interesting products [image] [image] [image] [image] [image] [image] . . . . . . Quick links to popular power meters: -$20 and less -RUIDENG UM24: USB-A/Micro, QC, Bluetooth (opt), Offline logging: Banggood -Kewesi: USB-A, QC: Banggood -Juwei/…

Xiaomi Mi 2 Powerbank 20,000mAh Review - New 20Ah King?

30-4-2019 Update Almost 2 years after my initial review and regular use of about 100 full cycles my unit started to show signs of swelling. My power bank is fully charged and ready to go most of the time, which is not optimal for Li-Ion storage but otherwise defeats the purpose of a power bank. And that’s how most people who are not into batteries will use them anyways, so “real world results” nonetheless. A bit of swelling in pouch batteries is not always dangerous but there is a chance it co…

Review request for HKJ [USB Power Devices]

This thread is for review request for usb power devices. This means: USB chargers Power banks with both fixed or replaceable batteries. USB meters When posting a request, please post a link to where I can get it, i.e. a shop that ships to EU. It will usual be a few month from I order the battery, until I can publish a review. I do often have many chargers in queue.

YZXStudio 8 Power Bank Review (4x18650)

[image]! (Click any image to view a larger version) Sometimes I get excited about flashlights, batteries, power banks and measuring gizmos. But probably never as much as about the newest YZXStudio 8. gen power bank. Here’s some of my impressions. YZXStudio is famous for its accurate and advanced USB power meters and DC loads. Check out HKJ’s reviews of the 1270 (Test of USB YZXStudio ZY1270) and 1266 (Test of USB YZXStudio ZY1266). With logging capabilities they offer comprehensive testing of…

Test/Review of YZXStudio USB meter ZY1270

YZXStudio USB meter ZY1270 [image] Official specifications: Input voltage: DC 3.5V-24V Input current: ± 3A Voltage resolution: 0.0001V (0.1mV) Current resolution: 0.0001A Cumulative capacity: 0-99999Ah; 0-99999Wh Capacity resolution: 0.0001Ah; 0.0001Wh Accuracy: Voltage 0.1+2d; Current 0.2+2d; Ah capacity 0.5; Wh capacity 0.5 Display: 1” 128x64 pixel LCD with backlight Update rate: Every 0.36s Idle current consumption: ~11mA/6mA (with backlight on/off) Current sh…