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A decent power bank for your 18650 batteries, although in my opinion it has a few drawbacks.

This story began around February this year, when two 3D printer boards came in for repair along with a power supply. The power supply turned out to be a relatively easy fix, but the board repairs dragged on for quite a while. I recently got the missing component, though, so I can put together a short article about it.

This is already my third attempt at buying fans on AliExpress, and this time I wanted to try my luck with "Original For Delta AFB0712SH". I chose carefully, but...

It hasn’t even been a couple of months since RuiDeng released a complete adjustable power supply based on the RK6006 module, which I reviewed not long ago. But it turns out they didn’t stop there. More in the article.

These are the third batch of transistors I've received. When I started testing them, I thought I'd give them a quick check and put together a short review, but things went completely differently from what I'd planned...

Along with the FDA59N30 transistors I recently showed, I ordered a couple of other types. Today I'm reviewing one of them: the relatively low-voltage HY3708.

At the beginning of March, I had three Tpcell product reviews: two types of batteries and a charger. I recently checked the product page and noticed that two more batteries had been added to the lineup. I decided to find out what they were like and tell you about them.

I recently reviewed some FDA59N30 transistors I bought on AliExpress. I mentioned then that I’d ordered a couple dozen more, and here they are.

Yes, I’ve already reviewed these batteries, and to be honest, I didn’t really expect to see them in the package. But first, they’ve already been sent, and second, I have something to compare them with, so I’ll test them too. And yes, these are the last batteries from the six pairs I recently received.

Not long ago, I mentioned that some interesting batteries were coming, and now it’s time for what I think is the most interesting one: batteries with almost the highest capacity in the 21700 form factor.

Another interesting set of batteries, interesting above all for their high capacity.

About a month ago, I posted a preview of a new version of the electronic load from Atorch. I’d already reviewed a couple of their devices, and they’ve updated it a couple of times since then, but somehow I never got around to testing and reviewing it. Now I’ve got the latest version of their device, the DL24EW, in my hands.

Today's review will be relatively short, although I wouldn't say these batteries are uninteresting—quite the opposite, really. They just didn't involve any intrigue or mysteries.

As I wrote in my previous review, almost all the batteries I received have some feature that caught my interest. Here’s the second one I’m testing, and what caught my interest wasn’t so much its specs as the fact that there’s no information about it anywhere.

About a month and a half ago, I posted a preview of RuiDeng’s new adjustable converter, the RK6006. I finally got my hands on one recently, tested it, and today I’ll share my thoughts.

Like many others, I use leads with alligator clips to connect a bench power supply or electronic load, and I felt like replacing them. Of course, I could make my own leads, and I do use some, but I was feeling a bit lazy. I searched AliExpress, found what looked like a decent option, ordered it, and decided to share my impressions.

As I’ve already mentioned, I needed some high-performance fans for one of my projects. First I bought a couple of AVC fans, then, almost as an afterthought, three more from Sunon. Tests showed that the AVC fans I bought didn’t live up to their specs, but it was hard for me to judge what they should be like since I had nothing to compare them with. Today, though, I’ll show you the Sunon fans and compare them with the originals.

Today's review will be very short, partly because there isn't really much to review here, and partly because the project this board was intended for is still in development. Still, I hope you'll find it useful.