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As luck would have it—or, more precisely, thanks to my regular reader Alex—I got my hands on another battery made by Samsung. It may not boast a high capacity, but it’s still very interesting, primarily because it’s designed for high-power applications such as e-cigarettes and power tools.

Sometimes you need to keep a small device, such as a router, powered without interruption. Using a regular "UPS" for this is both expensive and impractical, so low-voltage UPS units are used instead. Today I'll take a look at a couple of them.

I happened to get my hands on these unknown batteries. A friend brought them over and asked me to check them, measure them, give them a sniff and a taste—which is exactly what I did.

The latest review in the “batteries from nkon” series. Today we’re looking at the Murata VTC6, which in my opinion are just as popular as the VTC5A. There’s also a bit of useful information at the end of the review; some of you may already know it, while others may not.

I've often come across comments along the lines of “Chinese batteries die quickly.” I generally agree, but the question caught my interest, so I decided to look into it more closely—in particular, by testing how many cycles the battery can handle. More details in the article.

Another pair of interesting batteries from nkon, and this time they’re Murata VTC5A cells. They don’t have particularly high capacity, but they can deliver a lot of current. Review, tests, and a few oddities.

This is the third battery from the nkon store, and it’s not the familiar 18650 but the newer 21700 form factor. The differences include a capacity of up to 5 Ah and a current of up to 10 A, so I’d classify this battery as a high-capacity cell.

This is the second pair of Samsung batteries from the NKON store. Today we'll be looking at so-called high-capacity batteries, designed to prioritize capacity over discharge current and internal resistance.

It's been a while since I reviewed branded batteries. Thanks to regular reader Vladimir, I now have a subject for this review—or, more precisely, for an entire series of reviews testing branded batteries. And now I also have proper equipment to test them.

After my review of a Chinese clone of the VTC6 battery, one of the readers asked me to test another battery. This time, though, it was sold under the Liitokala brand and listed as the HG2—a name and appearance similar to those of another very well-known battery, the LG HG2. In the end, he ordered a single battery and had it sent to my address as a sample (many thanks to him for that). I received it and ran a few tests, which I hope will help us figure out what kind of battery this is.

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.

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.

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

Power banks are pretty rare subjects in my reviews. Somehow, I hardly ever use them in everyday life, but when I was offered the chance to review one, I decided not to turn it down. As usual, this review covers the exterior, teardown, tests, and conclusions.

Not long ago, I was asked to buy a number of batteries for some radios. It was a pretty straightforward job: I found a suitable listing on AliExpress, placed an order, and a while later picked them up at the post office. But is everything really as good as it seems? Today’s review is a “micro” one; I’ll try to keep it short and stick to the facts.

A brief review of NCR18650B batteries with the LiitoKala logo, bought on AliExpress. In appearance and specifications, these batteries are very similar to the well-known Panasonic NCR18650B, but cost a little less. As usual, the review includes an inspection and thorough testing.

How many times have I started with the words, “I’ve already reviewed a similar product,” only to find myself doing it again. About a year and a half ago, I posted a review of a somewhat unusual power bank for four 18650 batteries, with independent charging and pass-through power. Today’s review is of a very similar device, though with a few differences.