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Last time I showed the lead-acid battery that “couldn’t cut it.” I said there would be a second part, so today I’ll tell you what I ended up having to do to get something that works.

Recently, one of my regular readers gave me a rather interesting converter, and I’m very grateful to him for it. Naturally, I decided to review it.

A small package arrived recently with four batteries inside. To be honest, I wasn't expecting it, but the batteries inside were an even bigger surprise.

This is the second product from Baseus sent in for review, and it's a car charger. The idea is interesting, and the specs are great, but "something went wrong," and we'll try to figure out exactly what.

Another product that was sent to me for review some time ago. It arrived at the end of February 2022 and had to be put on the back burner. As for the product itself, it's a three-port "charger" rated at 30 W.

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...

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.

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.