Tokyo Gadget

Reviews & guides for smartphone gadgets

Power banks 5,000 vs 10,000 vs 20,000mAh: Which Power Bank Capacity Should You Buy?
A decision guide that starts from how many charges you want and how much weight you'll carry. Rated mAh vs what actually reaches your phone (Wh and conversion loss), typical weight and charge counts for the 5,000 / 10,000 / 20,000mAh classes, the 160Wh airline limit, who each class suits and where it fails, then links to the comparisons for each class.
Chargers What Wattage Charger Should You Buy? 30W, 45W, 65W, 100W, 140W by Device
A decision guide that starts from what your device requests: iPhone 18 Pro / 17 / older, iPad, Android, MacBook Air / Pro and other laptops. Covers total vs single-port wattage on multi-port chargers, cable limits, and the common mistakes (buying by total, no PPS, no variable voltage), then points to the 65W / 100W / 140W comparisons.
Charging basics Why Chargers Change Their Voltage: USB PD Negotiation, PPS/AVS, and What "40W Dynamic" and "PPS" Actually Mean
A USB-C charger negotiates with your device before any power flows: which voltage and current to deliver. Fixed steps (5/9/15/20V) leave the phone to drop the voltage itself, and that drop turns into heat. Variable voltage (PPS/AVS) trims that waste. Diagrams of the mechanism, then what to look for on a charger for iPhone 18 Pro / 17, Android, and laptops.
Phone charging Best MagSafe / Qi2 Car Chargers: 25W Snap-On, Cooling, and When to Use Wired
Qi2/MagSafe car wireless chargers that hold and charge your iPhone by magnet (UGREEN MagFlow 25W, Anker Prime Wireless Car Charger) versus wired 12V-socket PD chargers (Anker 323, Nano, UGREEN)—compared on heat management during navigation, mounting, and required power, using stated figures.
Wireless chargers Apple Watch Chargers for Travel: Retractable, Genuine Cable, Folding 3-in-1, or the Cube
Four ways to charge an Apple Watch on the road: ELECOM's retractable cable, Apple's genuine magnetic fast-charging cable, folding 3-in-1s that also take your iPhone and AirPods (Anker MagGo, UGREEN MagFlow), and the palm-sized Anker 3-in-1 Cube—compared on bulk, charging speed, and simultaneous charging.
Wireless chargers Qi2 25W Wireless Chargers Compared: Apple vs UGREEN vs Belkin vs ELECOM vs Anker Prime
Only Qi2 (Qi2.2) 25W-capable chargers unlock the iPhone 18 Pro / 17 series' 25W wireless ceiling. We compare the Apple MagSafe Charger, UGREEN Zapix, Belkin UltraCharge 2-in-1, ELECOM EC-MA11, Anker Prime 3-in-1, and Belkin 3-in-1 (fan) on form, required adapter, and fit, using stated figures.
Chargers 140W+ Chargers Compared: Anker Prime 160W vs 737 (Hands-On) vs 240W for 16-inch MacBook Pro
Chargers with 140W or more for 16-inch laptops and multi-device charging: Anker Prime Charger (160W, 3 ports), Anker 737 (GaNPrime 120W, the owner's travel unit), Anker Prime Desktop 240W, and Anker Prime 250W 6-port—compared on single-port maximum, power sharing, size, and portable vs desktop.
Power banks Laptop Power Banks Compared: 100W-Class, Carry-On Friendly—Anker Prime vs UGREEN
100W-class power banks that can actually charge a MacBook or Windows laptop on the go: Anker Prime (26,250mAh, 300W), Anker 25,000mAh 165W (built-in cable), UGREEN 145W 25,000mAh, and UGREEN Nexode 20,000mAh (Qi2), compared on single-port output, capacity (Wh), airline limits, and weight using stated figures.
Phone charging iPhone 18 Pro Charging Slowly? Why It Isn't 50% in 15 Minutes, and How to Fix It
"Slow," "not 50% in 15 minutes," or "running hot" on an iPhone 18 Pro almost always comes down to the adapter (60W+ variable voltage?), the cable, the MagSafe conditions (35W+ adapter, 25W charger), temperature, or settings. A step-by-step diagnosis, fixes, and what not to do.
Power banks Lightweight MagSafe Power Banks Compared: 5,000–6,600mAh, Slim, for iPhone 18 Pro / 17
For daily carry, a light 5,000–6,600mAh MagSafe (Qi2) bank is the realistic choice. Anker Nano 5000 (slim Qi2), Anker MagGo 6600 (with stand), CIO SMARTCOBY SLIM 5K (8.7mm), and CIO SLIM II Wireless 2.2 5K (25W) compared on thickness, output, and stand. If you don't need MagSafe, the plug-in Nano 5000 is lighter still.
Power banks Lightweight MagSafe Power Banks Compared: 5,000–6,600mAh, Slim, for iPhone 18 Pro / 17
For daily carry, a light 5,000–6,600mAh MagSafe (Qi2) bank is the realistic choice. Anker Nano 5000 (slim Qi2), Anker MagGo 6600 (with stand), CIO SMARTCOBY SLIM 5K (8.7mm), and CIO SLIM II Wireless 2.2 5K (25W) compared on thickness, output, and stand. If you don't need MagSafe, the plug-in Nano 5000 is lighter still.
Chargers Anker Store & Cafe Shiodome, Tokyo: Every Model in Person, Powered Private Rooms, Morning Set (Photo Report)
The owner visited Anker's official "Anker Store & Cafe Shiodome" (Caretta Shiodome B2F). A floor with every Anker product on display, dining tables with outlets plus Lightning / USB-C / wireless chargers, bookable one-person rooms, and a morning set—with photos.
Portable power stations 300Wh Portable Power Stations Compared: Anker Solix C300 vs Jackery 240 New vs EcoFlow RIVER 3
The 300Wh class (230–290Wh) is the usual first portable power station for camping, car camping, and blackouts. We compare the Anker Solix C300, Jackery 240 New, and EcoFlow RIVER 3 on capacity, AC output, battery chemistry (LiFePO4), weight, and UPS, using stated figures.
Cables Do You Need a 240W USB-C Cable? 60W vs 100W vs 240W, and What eMarker Means
240W USB-C cables arrived with USB PD 3.1 EPR. Unnecessary for an iPhone or MacBook Air? Required for a gaming laptop? We sort out 60W / 100W / 240W, the eMarker chip, and how data speed relates, with Anker, UGREEN, and Apple picks by use.
Chargers USB-C Hub Comparison: Anker 332 (Hands-On) vs 341 vs 555 vs UGREEN Revodok
Built around the Anker 332 (5-in-1) the owner uses daily, we compare the Anker 341 (7-in-1), Anker 555 (8-in-1), and UGREEN Revodok 6-in-1 on HDMI resolution, wired LAN, SD card, and pass-through power—so you know how much hub a USB-C-only laptop like a MacBook really needs.
Chargers 100W Charger Comparison: Anker Prime vs UGREEN Nexode vs CIO NovaPort QUAD II
Multi-port 100W-class GaN chargers that cover a laptop, tablet, and phone from one unit—Anker Prime (100W, 3 ports), UGREEN Nexode 100W (4 ports), and CIO NovaPort QUAD II 100W (4 ports)—compared on port layout, power sharing, and size using stated figures.
Wireless chargers 3-in-1 vs 2-in-1 Wireless Charger: Which to Choose (It Comes Down to the Apple Watch)
Charging iPhone, AirPods, and Apple Watch together—3-in-1 or 2-in-1? We compare on Watch support, footprint, output (Qi2 15W/25W), and pricing logic, and sort Anker, Belkin, and UGREEN candidates by use.
Power banks Best Qi2 25W Power Banks [Qi2.2 Generation, Slim, for iPhone 18 Pro / 17]
MagSafe power banks with Qi2.2 (up to 25W wireless) have arrived. We compare CIO's SMARTCOBY SLIM II Wireless 2.2 (5K/8K/10K) with the 15W generation from Anker and Belkin on capacity, output, and thickness, and say which to pick by use.
Wireless chargers Charging All Your Apple Devices in One Place [iPhone, Watch, AirPods, iPad, Mac]
How to consolidate charging for iPhone, Apple Watch, AirPods, iPad, and MacBook into a minimal setup: a 3-in-1 wireless charger plus a USB-C charger and cables. Tools and pitfalls for three scenes—home, desk, and travel.
Phone charging iPhone 18 Pro / Pro Max Charging Specs Explained: Do You Need a 60W Adapter? Fast Charge, 25W MagSafe/Qi2 and What to Buy
Apple's tech specs for the iPhone 18 Pro and Pro Max (released September 18, 2026) say 50% in 15 minutes with a 60W or higher variable-voltage adapter, and up to 25W over MagSafe or Qi2 with a 35W+ adapter. Is your 20W charger enough? What does "variable voltage" mean? Which cable and wireless charger actually qualify? Answered from the official specs.