Hello! reviews often require all sorts of loads and testers, so I'll tell you about another tester from Ruideng. It was bought complete with a load of LD25. Now there is no such lot, a smart load of HD35 has been added.
Check that maybe a little comparable with the previous model. We draw some conclusions.
Product Model: UM34 / UM34C
Display screen: 1.44 inches
Measuring voltage range: 4-24,000 V
Voltage measurement resolution: 0.01 V
Measuring Current Range: 0-5.0000A
Current Measurement Resolution: 0.001A
Capacity: 0-99999 mAh
Voltage accuracy: ± (0.2% + 1 digit)
Energy Measurement Range: 0-999.99wh
Current Measurement Accuracy: ± (0.8% + 3 digits)
Load Impedance Range: 9999.9 -0.8
measuring range of time: 0-99h59min59s
Temperature Range: -10 ℃ ~ 100 ℃ / 0 ~ 200
Temperature measurement accuracy: ± 3 ℃ / ± 6
Screen brightness adjustment: 0-5 levels; auto screen off: 0-9 minutes
Refresh rate: 2 Hz
Quick charge recognition mode: QC2.0 、 QC3. 0 、 APPLE 2.4A / 2.1A / 1A / 0.5A 、 Android DCP 、 SAMSUNG
Product size: 71.2 mm x 30.5 mm x 12.4 mm (UM34C) / 71.2 mm x 30.5 mm x 11.3 mm (UM34)
First, I’ll talk about the load. A low-power load came up to 25 watts. LD25
Packaging is always on par. It is delivered in a foam chest, they definitely will not hurt.
The load has a sticker label.
Consider the load from all sides
Immediately we see a massive radiator with a cooler on it
2 buttons are used to control the load functions
USB port tinted green
A Bochen 3296 resistor is used to adjust the current.
To disassemble, unscrew 4 screws from the radiator
Remove the cooler. The radiator is planted very tight, I see no reason to rip it off
Bottom view of the components of the board
The load is almost identical to her older sister
The load has a display on which it can display voltage and current readings
Compare the load reading comparing with the tester
The load has the ability to supply voltage to the power parts after selecting the desired current. Turned on, selected the desired amperes and turned on the On / OFF button
This function can be turned off so that the load immediately loads the power source when power is applied.
Also, the load has protection against high voltage and temperature, they are displayed and can be turned off.
Let's move on to the tester.
It comes in a metal case, which is convenient for storage.
A card with information and a link to the instruction and application is inserted
Inside the case, the tester protects the foam.
Consider from all sides
Top large display
Two buttons on the side to use the functions of the tester
Available interfaces are signed on the back.
From the other side 2 more buttons
USB connectors tinted blue
disassembled easily by unscrewing 4 screws
The tester has a very informative display, you can customize it to fit your own assumptions.
Here are some tester displays
A cool feature is the indication of the current fast charging protocol
For interest, we attach three testers and load
Indications are more or less accurate. The third tester here is really clearly superfluous.
Now compare the readings with the UM25C tester
Indications are similar.
The tester also has a letter C in the model, which means it has a Bluetooth module for transmitting readings to a smartphone.
the application downloads on the link on the card