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Review: “Generic” BLD-06A/B 6L Thermoelectric 12V Car Cooler/Warmer

From goughlui.com 1 week ago in Blogs

Shopping on Banggood has become a bit of a habit of mine. It’s perhaps not the best thing to be doing, but it’s also probably not the worst, as there are many items of random interest available at reasonable prices. … Continue reading →

Articles from Dr. Gough Lui

Quick Review: ZKETECH ZKE Battery Rack (4-Wire Kelvin AAA/AA/18650 Test Fixture)

From goughlui.com 3 days ago in Blogs

For those who want to test batteries, having a proper four-wire Kelvin connection to the cell is key to making accurate cell voltage measurements especially at higher currents. Four-wire connections allow for the resistance of the leads carrying the current...

Experiment: Exploring Ni-MH Charging with the Keithley 2450 SMU

From goughlui.com 3 days ago in Blogs

I’ve been involving myself with battery testing, at times quite intensively, testing various primary cells and rechargeable cells. Most of the tests of rechargeable cells have been Li-Ion, Li-Polymer and even Sealed Lead-Acid since they’re all similarly easy to test...

Quick Review: 4Tool ED20 2200lm USB-C Rechargeable 21700 Flashlight

From goughlui.com 3 days ago in Blogs

When it comes to flashlights, I used to be a fan of 18650-based torches because of their compact size and the ubiquitous nature of the cells. The main issue was the limited run-time because of the limited capacity, constrained by...

Teardown: H96 Mini V8 RK3228A 2+16GB “4K Ultra HD” Android 10 TV Box

From goughlui.com 2 weeks ago in Blogs

Just before the turn of the new year, we were hit with an unusual situation where somehow, we had lost the remote to a DVD recorder that we were using as a basic media player. Searching high and low, the...

Quick Review: BLM “Generic” 26650 Plastic PCB-Mount Battery Holder

From goughlui.com 2 weeks ago in Blogs

Well, it seems 2021 is off to a good start (for me anyway) as I’ve just been informed that I’m the lucky recipient of a RoadTest. What is it? A hint is that it involves Li-Ion batteries and a decent...

Post-Mortem: Click LTMR6W3K 6W LED MR16-Replacement Globe

From goughlui.com 2 weeks ago in Blogs

While visiting my aunt this week to help her out with porting her mobile service and changing over to a new phone, I noticed that several of her MR16 LED globes were either out or dim. When I bought it...

Review, Teardown: Bosch PLR 30 C 30m Bluetooth Laser Measure

From goughlui.com 2 weeks ago in Blogs

Happy New Year everyone – I can’t believe we’re in 2021 already. To kick off this year’s postings, I’m taking a trip back to 2019 when I purchased a Bosch PLR 30 C 30m Bluetooth-enabled Laser Measure for just under...

R&S NGM202 Update: F/W V3.034 Graphical View, SCPI READ Command & More

From goughlui.com 3 weeks ago in Blogs

If you’ve followed along with this blog, you probably have seen how hard I’ve worked my Rohde & Schwarz NGM202 review unit. It’s been a big part of many product reviews of batteries, chargers and the likes – rarely ever...

Review: ShockLi IMR 30A 3.7V/5500mAh Unprotected 26650 Li-Ion Battery

From goughlui.com 3 weeks ago in Blogs

Readers have probably noticed that I’ve recently been on a bit of a flashlight and lithium-ion battery “binge”. I guess that can’t be helped, since I quite like using flashlights for added general purpose lighting in my room (where it...

Project: SMD Practice Kits Pt. 2 (1206/0805/0603/0402/SOP/SOT, HKT002 NE555+CD4017)

From goughlui.com 3 weeks ago in Blogs

After starting on some SMD Practice Kits yesterday, I had two remaining in the pile. Rather than leave them unfinished, I decided to try tackling them today so that I can finally say that I’m done. A Sense of Deja...

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