Electronics and technology blog    /    All publication of the user kirich    /    Page 12

Some time ago, one of my readers got in touch and offered to let me test their new product, which had recently gone into production. And what can I say? I'm interested in all kinds of hardware, especially when it's smart. As always, I'll take a look, take it apart, run some tests, and share my conclusions.

Not long ago, one of my readers decided to buy batteries to replace the ones in his angle grinder battery pack. I was interested too, so I tagged along and ordered one to test.

A while ago, I posted a preview of my solar power station build on Instagram. Well, not only is it now installed, it’s also been generating power for three weeks. I’ve finally got around to writing up how I built it.

This isn’t a review, or even just a test. I’ve come across some unusual rulers (at least in my opinion), and today I’d like to show them to you. Maybe some of you have even used rulers like these.

A friend of mine had a manual sprayer, and we got the idea of converting it to battery power. Read this mini-review to see how it turned out.

Another measuring instrument. It’s not quite as original as the previous one, and it was made in a specialized factory, but I liked it all the same.

Today I’m reviewing a rather unusual measuring instrument. I saw it at a friend’s place and couldn’t resist showing it to you. I hope you find it interesting.

I’ll try to add updates here about what’s happening in Kharkiv. I may also add material from previous days.

More batteries, and this time they’re also Sanyo cells from a teardown, but in the more compact 14500 size. The results are pretty good too, which is to be expected from branded batteries.

More batteries, this time from the well-known Sanyo brand. What makes them especially interesting is that I bought them from Nkon as Reclaimed. People often ask me whether it’s worth buying batteries like these from Nkon, since they can be quite a bargain. This review answers that question.

I've been asked about testing BAK batteries more than once, and I even had one of this company's products. But recently, circumstances worked out so that I got my hands on a few more batteries, and there was another BAK in the batch, which naturally caught my interest.

As it happened, a battery for an e-reader from the well-known Kindle brand ended up in my hands, and I decided to test it. I was especially interested because not only had I bought it on AliExpress, but it had also been sitting in a box for a couple of years.

A few words about what's happening with the blog.

About a month and a half ago, I decided to run a life test on a fairly well-known battery. I thought it might be useful.

A few words about power supply in difficult conditions, briefly, and as a preview.

In my previous review, I covered a powerful relay with WiFi remote control and a few other "bells and whistles". I also mentioned that I’d review another relay, and I’ve now finished testing it and can share the results and my conclusions.

This device is more commonly called a trigger, though that’s not quite accurate. Somehow, the name just stuck. I decided to order one mostly on principle—“just to have it.” And since I’ve got it in my hands now, why not test it and show what it can do?

Today's roundup is about materials and tools for assembling battery packs, though I may add a few other things as well.