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Practical power and battery guides. No hype, no filler.
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Ryan Billings

Ryan Billings is a former engineering professor based in Toronto, with a background in mechanical engineering design. For seven years he taught CAD, embedded systems, PCB design, and machining. Every pick here comes from verified research, cross-checking independent testing, manufacturer specs, and real buyer feedback against real Canadian prices. No sponsored picks, ever.

Best Power Bank for Laptop Charging by Power Need

October 30, 2026October 6, 2026 by Ryan Billings
Goal Zero Sherpa 100PD power bank charging a laptop and phone

The best power bank for laptop charging is the Anker Laptop Power Bank A1695 for most people. Its 90Wh battery, 100W output from any USB-C connection, and two built-in cables make it unusually hard to pack the wrong cable. The compromise is weight: 595g is closer to a full water bottle than a pocket charger. … Read more

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LiFePO4 UPS Battery vs SLA: Six Months of Real Data

October 10, 2026September 26, 2026 by Ryan Billings
LiFePO4 UPS discharge voltage measured on mir compared with a published CSB SLA reference curve

I ran a 12V LiFePO4 battery in an APC UPS for six months. Here are the discharge curve, 77-minute test, real outage, and compatibility limits.

Categories UPS and Backup Leave a comment
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Watt Guy
Practical power and battery guides. Independent, reader-first, and free of sponsored placement.
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