Electronics and technology blog    /    Materials for December 2018 year

Almost five years ago, I published a review of some lights and described the problems I ran into back then. Now I needed similar lights again, but since I already had a bad experience with this kind of product, I went about choosing them a little differently this time.

I can't say I work with batteries very often, but I do occasionally have to test whether they're up to the job. Since I'm mostly dealing with high-current batteries, it was time to get a proper holder for them. As always, the inspection, description, comparison of the different connection methods, and conclusions are below the fold.

A brief review of protected Liitokala 3400 mAh batteries.

I once wrote that somehow every memory card I review ends up being twice the capacity of the previous one. I reviewed 32, 64, and 128 GB versions, and now it’s time for a 256 GB card. So, here’s a brief review of a tiny memory card from Alfawise.

While developing a device for testing and balancing multi-cell battery packs, I needed a multifunction meter. Since I planned to use it together with an electronic load, though, the meter had to be a little unusual. A look at the device, its description and tests, plus a short cautionary tale, after the jump.

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.

Review/thoughts aloud on the 48 V-12.5 A power supply.

Dear blog readers! To celebrate the upcoming New Year holidays, we're holding a giveaway. The winner will receive an Alfawise A8 TV BOX Rockchip 3229 Android 8.1 as a completely free prize, courtesy of our giveaway sponsor, the GearBest online store!

I’ve already reviewed quite a few different boards that can be used to build an adjustable power supply, often called a “laboratory” power supply, so I simply couldn’t pass up a newcomer to this market: the DPXxxxx series of boards. A few of my readers had also asked me to review it. Well, the board has arrived and it works—but am I happy about that? Read on for my review of the board and my conclusions.

I've already reviewed quite a few different TV boxes, but today I'm taking a look at a somewhat unusual model. In addition to its TV box functions, it also has a tuner for digital terrestrial and satellite TV. As usual, I'll take a look, take it apart, run some tests, share my conclusions, and finish with a summary table.

Toward the end of the year, Gearbest put together a roundup of the most popular TV box models and, along the way, lowered their prices a little. So here’s the roundup, since some of these models are genuinely interesting.