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Back in winter, news came out that RuiDeng was planning to release a new USB tester. I was particularly interested in this model, and now I have one in hand to test. This review covers the tests, as well as why this particular model caught my interest.

It’s no secret that television is gradually switching to digital broadcasting. Actually, no—it switched over a long time ago, and for at least the past 4 years they’ve been promising that they’ll “switch off” analog broadcasting any day now. But sooner or later, it will happen, and some owners of older TVs will be left, as they say, “up the creek without a paddle.” The TV itself will be like a suitcase without a handle: no use to you, but too good to throw away. But if you’re still happy with your old TV, you can add digital TV support with a small set-top box, which is what I’ll be talking about today.

Continuing the topic of devices with VFD displays, I want to tell you about a rather interesting product: a fairly accurate ammeter-voltmeter that could come in handy for a hobbyist.

Part two of a list of various products I bought on AliExpress. I bought some of them more than once, so I can comment on both the product itself and the store.

A review of another converter, this time designed for a single port, but with QC support. I’ve already reviewed a similar board, but this one is cheaper and smaller.

I decided to order a few different inexpensive converter boards to try out, and today I’m reviewing the first one. There’s nothing unusual about it: just a standard converter, without even QC, but with an output power of up to 40 W.

This story began quite a while ago, around the middle of August, when I was writing a review of the Cubot Power phone. After publishing the review, I put the phone aside for a while, and a few days later I needed it to test how well it could scan barcodes. But then I suddenly discovered that the camera's autofocus had completely stopped working. That's what can happen sometimes when you take something apart. More after the jump.

I posted a review of the YR1030 milliohm meter. It’s a great instrument, and I use it very often—not just when working with batteries, but whenever I need to measure low resistance. I also have a friend who works with batteries, and a while ago I suggested he buy one too. He was a little skeptical, but after seeing it in action, he decided to get one for himself. Knowing the specifics of his work, though, I recommended the updated YR1035 instead of the YR1030. Today I’ll explain how they differ and why, in this case, the 1035 is the better choice.

As I was developing my new electronic load, I needed some low-resistance resistors. There was no rush, so I decided to order them from AliExpress. Find out how that turned out in this mini-review.

Following up on the discussion about counterfeit VTC6 batteries from AliExpress, I decided to show you another set from the same mold, but from a different seller. A look-over, a few tests, and some conclusions.

Almost five years ago, I published a review of some lights and described the problems I ran into back then. Now I needed similar lights again, but since I already had a bad experience with this kind of product, I went about choosing them a little differently this time.

A brief review of protected Liitokala 3400 mAh batteries.

A friend spotted some Sony VTC6 batteries on AliExpress, so we decided to give them a try. Some were for my friend, and I ordered four for myself to test. The short version: it’s all pretty grim. More details in the review.

As promised, here's a review of the second part of the package with battery holders. This time I'll show you enclosed holders that might come in handy for various DIY projects. This time, I'll not only take a look at them, but also do some measurements.

Another mini-review of 18650 battery holders, this time for four cells.

I've run into situations several times where using thermal paste was either inconvenient or impossible, since it requires constant pressure to keep the heatsink against the component. So I decided to try out another useful product: thermal adhesive. Today, I'll take a quick look at it and, of course, put it to the test—especially since I've already posted a couple of reviews of various thermal interface materials.

I recently received another batch of holders for 18650 batteries and decided to post a few photos in case anyone is looking for something like this.

Today I have a very brief review—or rather, a quick photo showcase—of my latest batch of lithium batteries. Inspection, tests, conclusions.