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I've reviewed and tested various batteries, from camera batteries to cylindrical cells in all sorts of sizes, but this is the first time I've had 21700 batteries in my hands. Technically, they're ordinary batteries, just a little larger, but I was still curious to find out what they can do.

Not long ago, I saw someone mention that there aren't enough reviews of unusual products, so today I'm reviewing just such a product. Though I wouldn't call the product unusual myself, I haven't come across reviews like this, which is why I decided to write one. I've often seen people ask what is used to weld battery packs. Obviously, a special strip is used, but what types are there, how do they differ, and which one is best? That's what I'll try to explain today.

Some time ago, I posted a review of Soshine 14500-format LiFePO4 batteries. Today, I'm following up on that review with three more batteries from the same company. I'll also run a few tests on the 14500 battery you've already seen. This review includes all kinds of tests, as well as a check of how well the batteries withstand extreme currents.

Today’s review is about batteries, but not the familiar Li-ion ones—LiFePO4. They’re very similar in many ways, but in fact they have far more differences than you might think at first glance, and I’ll try to explain them.

Today I have a short review of a pair of branded holders for 18650 batteries. One of my readers sent them to me for a comparative test and review, so now I can share the test results with you.

A few power banks for 8 18650 cells crossed my path. I ended up bringing one home to my workbench “for testing,” which is what I’ll be talking about in today’s mini-review. I should probably warn you right away that this power bank has basically just one notable feature: it can hold a large number of batteries. Otherwise, it’s pretty basic and doesn’t really do much.

Not long ago, I posted a review of triple frames for assembling battery packs, and now I’ve finally received the single frames. There’s not much new to say, so this review will be minimalist.

I got my hands on another batch of batteries, this time Samsung ICR18650-26HM cells. Their only real selling point is the price, since capacity and maximum discharge current are clearly not their strong suits. But why not test them, especially when I have the time and feel like it? I’ll also try to clear up a couple of misconceptions about batteries.

I got my hands on another batch of batteries, so I decided to put together a quick review.

Today's mini-review is about four different camera batteries. They look different, but their specifications are remarkably similar. Still, it's better to see for yourself.

Today I decided to write a short review of my latest batch of the well-known Panasonic NCR18650B batteries with protection. I thought it was a useful topic, so I decided to share my experience.

Not long ago, I wrote a review of TrustFire 14500 and 18350 batteries. At the time, I also mentioned that I’d ordered another size, but it had gotten stuck somewhere in transit. The batteries I ordered arrived recently, so I decided to put together a quick mini-review of them.

I recently got some batteries from one of the “well-known” brands called TrustFire, so I decided to put together a short review. Inspection, tests, conclusions.

Some time ago, I posted a review of several types of batteries. This review is a short follow-up, since a couple of the batteries appear in both reviews, although they came from different sellers.

While the big, important reviews are in the works, I decided to put together a short review/report in the “Look what arrived” series. So, today’s review is a test of SANYO UR18650ZY batteries. If you’re interested, come on in.

Last month I posted a report on buying INR18650-25R batteries. Today, a report on my second “test purchase” from a store everyone knows—though this time the batteries are different: protected ICR18650-32A cells.

Not long ago, on November 5 to be exact, I ordered a number of Samsung INR18650-25R batteries. I was so “lucky” with the timing that the next morning they announced a sale on them. I wrote about it in the relevant thread. It took less than a month for them to arrive, and naturally, I tested them. So, here's the story of the order and delivery, and the results.

Today I’m reviewing a mixed bag of different types of batteries. It’ll be brief, but with numbers.