Tokyo Gadget

Reviews & guides for smartphone gadgets

Power banks MagSafe Power Bank vs Wired: Which Is Better? Speed, Loss, and Convenience
Choosing an iPhone power bank means deciding between MagSafe (wireless) and wired (USB-C). We compare charging speed, loss (heat and efficiency), portability, and pricing logic using stated specs, and say which to pick by use—including models that do both.
Chargers A Tidy Desk Charging Setup [USB-C Hub, USB Power Strip, 3-in-1: Fewer Cables]
How to organize a desk full of laptop, iPhone, Apple Watch, AirPods, and tablet charging with four tools: a USB-C hub, a USB power strip, a 3-in-1 wireless charger, and a multi-port charger. Includes the owner's notes on the Anker 332 hub in daily use.
Wireless chargers Wireless Charger: Stand or Pad? Differences, Fit, and How Not to Choose Wrong
Stand vs pad wireless chargers compared on placement, notification visibility, portability, case interference, and Apple Watch support—with picks by use and the mistakes people make.
Wireless chargers Anker vs Belkin 3-in-1 Wireless Chargers: Which to Buy (3 Differences)
Choosing a 3-in-1 wireless charger usually comes down to Anker or Belkin. We compare Qi2 support, output, form (stand vs folding), pricing logic, and review counts using stated specs, and say which to pick by use.
Wireless chargers MagSafe vs Qi2 Chargers: What's the Difference and Which to Buy
"MagSafe-compatible" and "Qi2" both snap on magnetically, but the standard, output, and pricing logic differ. Including older magnetic Qi pads, here's a comparison table to decide which an iPhone user should buy today.
Phone charging iPhone 17 Series (2025) Charging Setup: USB-C and Qi2 Accessories to Get
How to set up charging for the iPhone 17 series (2025 models); the iPhone 18 Pro announced in September 2026 is covered separately: a USB-C PD charger, a rated cable, and Qi2/MagSafe wireless charging. Accessory choices based on current iPhone specs, explained simply and without overstating.
Wireless chargers Charging AirPods: Wired, Qi Wireless, and 3-in-1 Tips
A simple guide to charging AirPods: wired USB-C/Lightning, how to tell if your case supports Qi wireless charging, a 3-in-1 to charge with your iPhone and Watch, and what to do when they 'won't charge'—for beginners.
Portable power stations Portable Power for Camping & Car Camping: Capacity, Output, Use
How to choose a portable power station for camping and car camping: reading capacity (Wh) and rated output (W), guidelines by appliance, the long life of LFP batteries, and charging—an autumn-outdoors guide for beginners.
Wireless chargers Charging an Apple Watch: Charger Types, Fast Charge, 3-in-1
A simple guide to charging an Apple Watch: genuine/MFi magnetic chargers, what fast charging needs, a 3-in-1 stand to charge it with your iPhone and AirPods, and what to do when it 'won't charge'—for beginners.
Chargers How to Choose a USB Power Strip: One Unit for Desk, Bedside, Travel
A USB power strip combines AC outlets with USB ports. This guide covers how to choose—number of AC outlets, USB output (W), GaN, cable length, and portability—plus a solid pick that's easy to use on a desk or a business trip.
Chargers How to Choose a USB-C Hub: 4K HDMI, 100W PD, and Ports
A USB-C hub expands a thin laptop or tablet with just one connection. This guide covers how to choose without regret—port layout, 4K HDMI output, PD passthrough (charging) wattage, and device compatibility—plus a solid recommended pick.
Power banks Anker Nano Power Bank (MagGo, Plus): Safety-Focused MagSafe Battery
A look at Anker's new MagSafe power bank, the Nano Power Bank (MagGo, Plus), from public specs: 10,000mAh, Qi2/MagSafe 15W, USB-C 30W, about 15mm thin, with a newly developed battery emphasizing safety. Who it's for, explained simply.
Charging basics What a Power Bank's Protection Circuit Does (Safety Explained)
How a power bank's protection circuit (BMS) works, for beginners. Its role guarding against overcharge, over-discharge, overcurrent, short circuit, and heat—and why to choose certified products like PSE—explained from the principle.
Charging basics Why Batteries Degrade: What Makes Them Hold Less Over Time
Why phones and power banks hold less as they age, for beginners. Charge cycles, chemical wear, and the effect of full charge and heat—the mechanism of degradation and how to make a battery last, explained from the principle.
Charging basics How USB-C Works: Why One Cable Does Power, Data, and Video
Why USB-C plugs in either way up and does charging, data, and video over one cable, for beginners. The pin layout, Alt Mode, the link to USB PD, and why cables differ in performance—explained from how it works.
Charging basics Why Wireless Charging Is Slow and Warm: What 15W vs 25W Really Means, and How to Choose
Why is drop-and-charge slower than a cable, and why does the phone get warm? A diagrammed look at electromagnetic induction—coil-to-coil transfer loss, misalignment, rectification—and what it tells you: where the 15W vs 25W difference shows up, what magnets (MagSafe/Qi2) actually fix, and when to use wired instead.
Charging basics How Fast Charging Works: Why It's Quick First, Slow at the End
Why fast charging is fast, and why it slows down after 80%, for beginners. The CC-CV charging process, how voltage and current are raised, and why it's kind to your battery—explained from the principle.
Charging basics How a Lithium-Ion Battery Works: Why It Can Recharge
How the lithium-ion batteries in phones and power banks work, for beginners. Why they recharge over and over, the roles of the cathode, anode, and electrolyte, and why heat and wear happen—explained from the principle.
Charging basics Volts, Amps, Watts: How to Read Charging Numbers (Made Simple)
The difference and relationship between V (volts), A (amps), and W (watts) in charging, for beginners. What W=V×A means, what actually decides charging speed, and how to read the numbers on a product page—explained from how it works.
Charging basics mAh vs Wh Explained: Why You Can't Charge the Full Rated Capacity
The difference between mAh and Wh on a power bank, for beginners. Why 10,000mAh won't charge your phone by the full rated amount (voltage, conversion loss), and what Wh means for air travel—explained from how it works.