Wesley's Tool-Box

Korean Institute of Electrical Engineers (KIEE) held its 57th Summer Conference at Mona Yongpyong Resort in Pyeongchang-gun, Gangwon State, Korea on July 2026. This event provided me with an opportunity to present a follow-up to my Bolt EV battery thesis from 5 years ago. I had originally planned to write up on the results of the battery degradation after 8 years and 160,000 km of driving. But due to the battery recall that took place 4 years ago, I had to modify the topic slightly.

The result was a comparison of degradation trends between two sets of batteries, each going for roughly 4 years an 100,000 km. While I will probably still get the newer battery up to 160,000 km point eventually for yet another thesis, the one I presented this time was meaningful in that the trends were starkly different despite keeping the driving patterns more or less consistent. For those who are interested, here are the original paper and the video of the presentation I gave.

Thesis: 'Comparative Analysis of Real Life Degradation Trends Between Original and Improved Batteries on Bolt EV' - submitted for 2026 KIEE Summer Conference (PDF file)

Video: 'Bolt EV Battery Analysis thesis - 2026 KIEE Summer Conference' - YouTube

It’s been just a few months since the last occurrence, but another total lunar eclipse took place yesterday. This one was a bit special since it coincided with the first full moon of the lunar year, which is a day of celebration called Jeongwol Daeboreum in Korea. It’s the first time that this has happened in 36 years. Naturally, I made a full preparation. iPhone 16 Pro would take wide angle timelapse, while Nikon P1000 would take zoomed-in photos of the Moon.

Unfortunately, the thick overcast clouds that had been lingering during the day refused to go away, and obscured my view of the moonrise. I nevertheless decided to stick around, and the gambit paid off somewhat. The Moon would occasionally pop out behind the clouds, allowing me to take at least some photos that would illustrate the progress of the lunar eclipse, including the totality. This was possible because the clouds had holes, allowing for windows of observation that lasted anywhere between tens of seconds to a few minutes.

After taking a few shots of the Moon with P1000, I realized that the cloud covers would prevent sufficient exposure, making the photos too dark even with a 1-second shutter speed. So I pivoted to using my iPhone 17 Pro Max instead, using its 8x zoom camera with Night Mode. It wouldn’t look as sharp as P1000, but some photos are better than none. The collection of the best shots are shown here.

Device: iPhone 17 Pro Max
Settings: 200mm equiv. - ISO 800~1600 - 5s - f/2.8
Time: 2026-03-03 19:52 ~ 22:32 KST
Location: Naju, Korea

2025 was an interesting year with lots of chaos and progress, much of which resulted from the events that took place in 2024. Now we're entering 2026, the year of the Fire Horse. Like the Sun in the picture, I hope everyone outshine the murkiness that is the clouds and rise up.

Device: iPhone 17 Pro Max
Settings: 200 mm equiv. - ISO 25 - 1/940s - f/2.8
Time: 2026-01-01 07:56 KST
Location: Naju, Korea

Nuri, Korea's indigenous rocket also known as KSLV-2, took off from Naro Space Center for the first time in 2 and a half years at 1:13 AM today. This launch was the 4th overall, and also the first ever nighttime launch. I wasn't sure how well the photos and videos would turn out since all the rocket launches I've been to happened during the day. But I came in prepared and got the results I wanted.

For the equipment, I brought my well-trusted Nikon P1000 for the superzoom and my new iPhone 17 Pro Max as the back-up, relatively wide angle shot. Both were fortunately sensitive enough for capturing the visuals during this clear and dark night.

As with last year, I pre-ordered a new iPhone for pickup on the launch day at an Apple retail store location within Korea. This time, I went with Apple Myeongdong. As the location is popular with tourists, foreign and domestic alike, lots of media coverage was made. I ended up in many of the photos taken by the press, and JTBC even did a short interview with me about the new Pro / Pro Max series.

Video Coverage
- JTBC News (reuploaded at Naver News)

Press Photos
- News1 news article
- Individual photos: #1, #2, #3