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Are you looking for ways to stretch your dollar? 
This is super cheap and affordable!
Grab the FNB28 Current And Voltage Meter USB Tester from Banggood for just $6.49. No coupon code needed.
Characteristics:
1. One-button detection fast charge protocol
2. Chinese and English switching
3. Switch display direction
4. QC2.0/3.0
5. Built-in 12-bit ADC chip
6. Huawei FCP/SCP Sam sung AFC
General inspection peripheral products
1. Mobile phone 2. Mobile power
3. Charger 4. Car Charger 5. Data line
6. Electronic component 7. Laptop
Multiple data display on one screen
1. Screen flip
2.Data storage
3. Fast charge recognition
4.Energy capacity detection / intelligent record
5.Pre cision measurement
6. Standby brightness
7.Chinese and English interface
8.Wide voltage low internal resistance
9. Fast charge
10.Free drive upper machine upgrade
Product Precision:
bit accuracy measurement is more accurate
Power/capacity record (no power loss)
1.4 group capacity / power data record
2. Histogram / list for easy comparison of data
3. Controllable recording switch, automatic recording (can set threshold) or manual recording
4. Optional recording time, that is, recording for a period of time (can be set, for example, one hour),automatically stop recording.
5. Can set the recording time interval, such as saving 1 time / second or 1 time / 2 seconds
In the automatic mode, it is not possible to start or pause recording by pressing the button, but when the current ≥ recording current threshold, it is automatically recorded;
In manual mode, you can start/pause recording by clicking the K1 button, and the recording current threshold at this time does not work.
In the above two modes, the recording time can be set. For example, if it is set to 1 hour, the recording time will not be recorded after the recording time reaches 1 hour. To continue recording, clear the data.
