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I’d wanted to buy a signal generator for a long time, but kept putting it off. Maybe because I already had a couple of basic models at home, or maybe because I didn’t really need one that badly. But after watching one of the videos, I finally decided to get one. I found the lowest-priced option available at the time, placed the order, received it, and did a few tests. I also upgraded the firmware to the higher-end model’s version.

It’s been just under a year since RuiDeng announced the previous version of its hybrid power supply, and now the developers have finally released a new model I’ve been waiting for: the same kind of hybrid converter, but with an output current of up to 12 A. Today’s “not a review” will include a brief announcement, a description, the differences, real photos of the device, and, I hope, a discussion of the new model in the comments.

A roundup of popular AliExpress products. I haven't bought these myself, but picked out products that other people buy very often, so there's a chance they're not all as bad as they sometimes turn out to be :)

It's been a while since I posted a roundup, and there's another sale on AliExpress. Anyway, I didn't spend long looking around; I just decided to share links to products I've ordered recently, in case they might be useful to someone else too. These are all products I actually ordered, and I've already received some of them, so the sellers have been tested.

Not long ago, I posted some information about the relatively new DL24M electronic load, a follow-up to the DL24, which I reviewed about a year ago. When I posted about the DL24M, AliExpress was having a sale, so I bought one for myself, and today I want to tell you about it.

About a year and a half ago, I reviewed the interesting, very high-quality ANR26650M1-B batteries from Lithium Werks. Now I’ve got the same batteries, but sold on AliExpress. Let’s inspect and test them, compare them with the previous ones, and hopefully this will be useful. I think I’ve also figured out how to read the production date on these batteries.

I picked up a USB hub and a Bluetooth adapter in a recent sale and thought I’d share my impressions in case they’re useful to someone :)

At first, as before, I wanted to write two reviews, one for each type of battery. But then I thought: the batteries have similar specs, so why not combine the two reviews into one? So today, it’s a “two-in-one” review, plus a comparison.

I've had all kinds of batteries: standard ones, protected ones, ones with a converter, and even one with a built-in charger. But this is the first time I've come across a battery this unusual. Inspection, tests, and conclusions.

Another set of 18650 batteries. They don't really stand out among the dozens I've tested, except for their slightly higher rated capacity and lower current rating than the well-known VTC6, HG2, and 30Q, which I'll compare them with at the end of the review.

It's been a while since I wrote a "not a review," and a friend just sent me a link to a new product from Atorch, the logical continuation of the DL24 series. I wrote about it earlier in a similar "not a review" and in a more in-depth article with an example of how to build a power module for it. So today, here's a brief announcement of their new product.

Another pair of 21700 batteries, but this time in the high-capacity class, which I also have something to compare them with. Besides, in my opinion, batteries like these are currently one of the fastest-developing segments, since they offer high capacity, decent current, and a wide range of applications.

Another set of high-current 21700 batteries, with a capacity of 4000mAh. This is already my fourth review of batteries with similar specs, so I have plenty to compare them with—and I’ll do that at the end of the review.

Another set of little-known batteries with a high maximum continuous discharge current, this time in the 21700 size. Inspection, load test up to 40A, comparison, conclusions.

I decided to try some 18650 batteries rated for a maximum continuous current of 38A, just out of curiosity. As far as I know, these may be the highest-current batteries of this size, but it turned out to be a lot more interesting than that. Inspection, tests, intrigue, investigations, and conclusions.

I've already reviewed Vapcell 18350 batteries, but those were relatively high-current cells, while these are designed with capacity in mind, so the current is limited to 3 A. Inspection, tests, conclusions.

A review of batteries that are pretty unremarkable: 3 Ah capacity and a 20 A current rating. But people have already asked me about them, so I decided to compare them with their closest competitors, the HG2 and VTC6.

Another set of batteries in the 26650 size, which is gradually being phased out. Of course, this format will stick around for a while, since many devices still need it. Even so, the 21700 size, with comparable capacity and specs, has long been taking its place. Inspection, testing, and a comparison with the Vapcell G53.