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Self-discharge test of Kentli PH5 1.5V Li-ion AA (Part 2)
After my first self-discharge analysis of the Kentli PH5 Li-ion AA battery, I have collected another month’s worth of data. The battery’s voltage drop has been surprisingly linear. Although I didn’t...
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Self-discharge test of Kentli PH5 1.5V Li-ion AA (Part 3)
Aw what, it’s October already? So much for having another blog post in September… But anyway, “more months, more data!” The voltage of the PH5 has dropped down to 4.093 volts as of today (October 1st,...
View ArticleHDQ Utility version 0.96 now available!
Whew, I’ve been working on this version for quite a while. With the helpful feedback of many people that have tried my software, I’ve made a large number of improvements to the software; of course,...
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Self-discharge test of Kentli PH5 1.5V Li-ion AA (Part 4)
“It’s been a long time… How have you been?” It’s been almost a year since I started my discharge test of the Kentli PH5 Li-ion AA battery, and the battery has lost almost 40% of its capacity due to...
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Self-discharge test of Kentli PH5 1.5V Li-ion AA (Part 5)
It’s amazing – 894 days (and counting) have elapsed since the start of my long-term experiment, documenting the real-world self-discharge behavior of the Kentli 1.5V Li-ion AA battery… and it’s still...
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Completed: Self-discharge test of Kentli PH5 1.5V Li-ion AA (Part 6)
Looking for the teardown or how well the Kentli PH5 battery performs under load? Click the links to learn more. It’s finally happened – the self-discharge test of the Kentli PH5 Li-ion AA battery has...
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Review and analysis of XTAR 3600 mAh 18650 Li-Ion protected battery
TL;DR – Yes, the XTAR 3600 mAh protected 18650 battery meets its rated capacity! Just make sure your device can drain down to 2.5 volts. The 18650 lithium-ion battery, named after its size (1.8 cm...
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PPS For All: Directly charging lithium-ion batteries with a USB-C PD tester
TL;DR – USB-C with PPS (Programmable Power Supply) technology is here, it’s cool, and now it’s usable on more than just the newest smartphones – it works on almost any Li-ion battery with the right...
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Review of XTAR Li-ion 4150mWh AA / 1200mWh AAA batteries and L8 USB-C 8-bay...
TL;DR: XTAR’s new lithium-ion AA and AAA batteries offer a decent alternative to Ni-MH rechargeables if weight and/or output voltage is a concern, but only for low- and medium-drain applications. You...
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Dispo Adventures, Episode 1: Reverse-engineering and “running Windows 95” on...
As seen on Hackaday! TL;DR: Disposable vapes can have LCD screens…?! At least they’re moddable now – check out my GitHub for docs, tools, and links to similar projects if you want to try this on a...
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