Why iPhone Users Are Ditching Apple’s $19 Cube For This One Charger

Apple's 20W cube is a USB-C version of the same form factor that's been in iPhone boxes since 2008. One port, 20 watts, plastic shell, no foldable prongs. It charges a single device at the lowest tier Apple considers "fast."

If you own an iPhone 16 Pro, an Apple Watch, and AirPods, that single port means you charge sequentially — phone first, then watch, then buds — unless you carry multiple cubes. Three cubes is $57, takes three wall sockets, and weighs more than a brick that does the same job in a smaller package.

The fundamental issue is that 20W is the floor of fast charging, not the ceiling. The iPhone 16 Pro will accept up to 27W. The MacBook Air wants 30W minimum. The MacBook Pro wants 67W or higher.

The model travelers replace the cube with is the Nano II 67W. It's the size of a sugar packet, has three USB-C ports, and pushes a combined 67 watts across them — enough to fast-charge an iPhone, an iPad, and a MacBook Air simultaneously from one wall outlet.

The body is roughly 40% smaller than Apple's cube by volume. The prongs fold flat for travel. The shell is matte plastic with a single LED indicator. It looks like Apple should have made it.

Pricing typically runs $39–49 depending on the channel and promotional cycle. Compared to three Apple cubes at $57, it's cheaper, faster, smaller, and lighter.

GaN is short for gallium nitride. It's the material the power transistor inside the brick is made of — a replacement for silicon, which is the material every standard charger has used since the 1960s.

The practical difference is heat. Silicon transistors lose 30–40% of input power as heat at high wattages. GaN transistors lose about 5%. The result is that you can pack 67W into a brick the size of a 20W silicon cube, and it runs cooler at full load than the silicon cube runs at half.

GaN was prohibitively expensive in consumer chargers until 2019. By 2026, it's standard across every serious power brand.

Beyond the wall brick, the other accessory Apple charges premium for is the MagSafe-compatible power bank. Apple's own version is $99 for a small wireless puck. The equivalent MagSafe-compatible power bank from the same brand runs roughly $40–60 depending on capacity, with magnets strong enough to hold the phone through a backpack jostle.

The capacity gap is what makes the price gap embarrassing. The Apple puck holds 1,460 mAh — about 60% of a single iPhone charge. The third-party banks at the same price tier as Apple's hold 10,000 mAh, or roughly 3.5 full charges.

For travelers, the multiplier is decisive.

Apple has been deliberately vague about the maximum wattage the iPhone 16 Pro accepts. Third-party testing has settled on roughly 27 watts at peak, which means any USB-C PD charger rated for 27W or higher delivers the same charging speed as Apple's own 20W cube — actually faster.

The practical floor is a 30W brick. At that wattage, an iPhone 16 Pro charges from 0 to 50% in about 18 minutes, which is the fastest the phone will go.

Going above 30W on a single-port brick is wasted spend for an iPhone-only user. The reason to buy higher-wattage bricks is multi-device charging — 67W spread across three ports gives you phone + tablet + laptop simultaneously.

For a traveler with multiple devices, the three-port 65–67W brick is the right tier. The three USB-C ports cover laptop, phone, and tablet simultaneously, the prongs fold flat for packing, and it accepts 100–240V input so it works on any global outlet with a plug adapter.

For a single-device user, the same brand sells a one-port 30W brick at around $15–20. It's a direct replacement for Apple's cube at one-third the price and slightly faster charging.

For households, the four-port 100W desktop brick is the model that ends desk-cable clutter.

The household upgrade from a wall cube is the desktop GaN station. The 100W four-port model from the same brand sits next to a monitor, charges every device in the home from one outlet, and handles a MacBook Pro at full speed alongside three other USB-C devices.

It removes roughly four wall warts from the house. For families with multiple iPhones, iPads, Apple Watches, and a laptop or two, the savings on individual cubes covers the station within a year of replacement-cycle spend.

It also charges Apple Watches when paired with a flat USB-C Apple Watch cable, which Apple still sells separately.

A simple framework that holds up across the lineup:

• Single iPhone user, no laptop — 30W single-port brick is enough; saves $5 and a port you won't use
• iPhone + iPad or iPhone + Apple Watch — two-port 40W brick covers both at peak speed
• iPhone + iPad + laptop — three-port 65–67W brick is the carry-on standard
• Household with 4+ devices — 100W four-port desktop station replaces every cube in the house

Apple has experimented with multi-port USB-C bricks — a few enterprise SKUs ship with their server gear — but the consumer Apple Store has never carried a three-port GaN model.

The most plausible explanation is margin. The single-port cube has high margin and a captive market: people who walk into the Apple Store with a new phone and no charger. Building a multi-port brick that costs slightly more and replaces three SKUs would compress the same revenue into one purchase.

Until that changes, the third-party GaN brick is the obvious answer for anyone with more than one Apple device.

The brand runs frequent sale events — typically a major discount cycle around Prime Day, Black Friday, and back-to-school. The 67W three-port brick has hit $32 during peak sale weeks. The 100W desktop station has hit $69.

Outside of sale cycles, the standard direct-from-brand pricing usually beats Amazon by a few dollars because the brand owns the supply chain.

For a household swap, timing one or two purchases to the major sale weeks covers the upgrade for an entire family at roughly half the Apple-cube equivalent.