Very good, fast and seems reliable. But it did not recognize one AAA, so someone would assume it is broken and throw it away, but I had read another user's comment who put it in another charger and restored it normally. The same happened with me and it is a bit to quite strange. Personally, I charged it with a slow Energizer charger and before it even finished charging, I transferred it to the PD4 and it continued charging normally. (-1 star) So DO NOT throw away your old charger! I will update when I have something more.

Update: I also noticed that some batteries do not reach 1.50V but it shows them as 100% (charged). If you remove the battery and put it back in immediately (I just pull the bottom pole a bit), it will show a different voltage and continue charging normally up to 1.50V. So, another star off. However, it remains a fast charger!

It's good, but there might be a better one.
It doesn't discharge,
it doesn't always correctly see the peak and heats them up.

User deep purple, who gave a low rating, placed charged batteries and incorrectly states that they do not charge or that they charge a little. How did I understand this? It is clear from the voltage shown by the charger, as in the 2 photos shown (he mentions that the battery is already at 4.2V, "typical" maximum lithium) and I also have the larger model which operates in exactly the same way. The chargers of this company are designed to be very careful, not to overcharge the batteries. I have 2 large ones (almost the same model just takes an extra 2 batteries), for 3 years now and I take measurements every so often with external tools and I observe this behavior.

For personal use, it is just what I needed, it does a very good job and for its price, it was worth buying for the charges I need at least 3-4 times a year.

How long have you had the product? 1-2 months
What use do you make of it? 2-3 times a week
Are you satisfied? No
Has it presented any problem? What it shows is random or completely irrelevant, such as voltage, charging percentage.
It does not have a program to discharge the batteries, so you cannot know the battery capacity either by charging or discharging.
Would you recommend it to a friend? No

No complaint does what it says, very good.

As a product price, I expected it to be better.
It seems to NOT charge the batteries correctly.
However, I could return it, something I haven't done yet.
The positive thing is that it has indicators and illumination.
I don't know how accurate the measurements are, but with new batteries with over 8 hours of charging (2500mAh), it never showed them.
OK, something simpler and cheaper that I had bought was much better.
So, what they say "you get what you pay for" does NOT always apply.
Try it, I have bought two (at the same time), it just does its job until it charges, later I will look for something better.
P.S. the batteries are branded and expensive, which I tested.

This is my opinion, I hope I helped.

Defective product, I don't know why.. I requested a refund. Brand new 6 batteries, 3000 Mah, at the end of charging, one showed 22Mah 100% and the other 0%. I hope they are not damaged. The remaining 4 showed 300Mah 100% on some and less than 300Mah on others. It's all over the place.

Very good charger. The only thing that troubles me with the 18650 batteries is that when they are completely empty, it doesn't recognize them.

Finally, a charger of progress. It turned out that the previous one did not fully charge the batteries even 2 days later! It is very fast, reliable, and the battery indicators solve all your doubts.

Good for its price but when you put all four batteries to charge, its performance immediately drops. The updates on the screen are reliable and more convenient

Excellent machine.
The screen provides information about EVERYTHING.
It doesn't charge quickly, but in 2-3 hours, voila!

It does not charge as expected.

I wanted it to charge 4 batteries simultaneously and reach at least over 1000.

If you put 4, it struggles to reach 300.
If you put 2, then 600.
And if you put one, then around 900.

In the end, I put the old one that has 12 slots and I change batteries until I find something better.

Extremely high quality. Absolutely user-friendly, precise, and effective. Its only flaw is that it is bulky. If that doesn't bother you, then buy it with your eyes closed

Very good charger, the screen is very useful because you can understand the state of the batteries you are charging

Very good charger and fast, in 1 to 1:30 the battery is charged. It has a charging indicator and overall it is a very good purchase. I bought it to charge 18650 flashlight batteries

Very good charger, charges well and quickly and has indicators for charging percentage and time it has been charged! It can also charge a single battery or even a single number of batteries, meaning the batteries do not need to be in pairs. Recommended!

Very good with a screen that shows how much the battery has charged.. I also notice that it has a fast charging speed!

Excellent product, detailed information for each battery on the screen, very good construction.
The batteries stand perfectly.
Something more than honest and reliable choice

Very good charger, I have had it for a long time and it does everything it promises without any problems. Fast with separate indication for each battery. Value for money

Very good charger, charges the batteries very quickly, with separate charging indicators for each slot, which is very useful. Excellent value for money. I just bought a second one for home.

The best thing... charges separately... I highly recommend it and your screen tells you how much it still needs, 100% the best!

Excellent machine.
The screen provides information about EVERYTHING.
Charging percentages, charging progress, battery type, volts, amps, etc.
The best charger that has passed through my hands.

I charge 18650 batteries. The screen is very good, it shows you everything about the battery and charges very well. Automatic, of course, no need to select battery type, hours, etc. Awesome!

Very good reliable and fast battery charger.