A ADDTOP UltraSlim 10000mAh Power Bank with built-in USB-C cables (22.5W fast charging)

Overview: a slim 10,000mAh power bank built around convenience

If you often carry a phone charger but still end up hunting for the right cable when you’re out, this A ADDTOP UltraSlim is clearly designed to remove that hassle. It’s a portable 10,000mAh battery pack with two built-in USB-C cables, so you can plug in straight away without rummaging for extras. On paper, it also keeps the unit itself relatively compact and lightweight, aiming at “grab it and go” travel and day-to-day use.

The headline benefit is the all-in-one approach: you don’t just bring a power bank—you bring the charging leads with it. That’s the kind of practical thinking that can matter more than tiny percentage gains in battery performance, especially when you’re out for meetings, commutes, or short trips.

That said, the “fast charging” claim is only as good as your phone’s charging support and the cable/port behaviour, so results can vary a bit in real life.

What’s notable in day-to-day use

Where this power bank differentiates itself is the built-in cable setup. You’re not limited to using a separate USB-C lead—both built-in cables are described as supporting input/output, and one of them can also be used as a hook. For day-to-day charging, that translates to fewer things to forget: no extra cable in your pocket, no adapter hunt.

The unit is also positioned as ultra-compact. The description claims it’s around 30% smaller and 50% lighter than similar counterparts, with a slim body that should store easily in pockets or bags. If you carry your phone charger in a jacket pocket, that weight and bulk reduction is the sort of improvement you’ll actually notice.

Micro-scenario: imagine you’re leaving for work and only remember your power bank. With a standard external battery you’d then need to find a cable, here, you should be able to plug your phone into one of the built-in USB-C leads immediately, then get back to your day without digging through your bag.

Fast charging and recharge speed (the realistic angle)

A ADDTOP says the integrated chip supports up to 22.5W fast charging via the built-in USB-C cables. It also states that the power bank itself can be fully recharged in about 2 hours.

There’s a concrete iPhone charge-time figure in the description: charging iPhone 17 from 0% to 71% in 30 minutes. That’s useful as a reference point, but it’s still worth tempering expectations—battery behaviour depends on the phone’s battery management, temperature, and whether the phone is able to draw the stated charging power.

So yes, if your main goal is quick top-ups while you’re out, this design leans the right way. But if you’re expecting “fully charges everything instantly” outcomes regardless of device, it may end up feeling more like a capable mid-range travel charger than a replacement for a full wall-charging routine.

Capacity and what you can expect to charge

The power bank has a 10,000mAh capacity. The description frames this as delivering around 2–3 full charges for an iPhone 17, with the possibility of powering a tablet.

That’s broadly what many 10,000mAh packs aim to do: enough for a couple of full cycles or several partial top-ups—ideal for business days, travel, and short outings. It’s not the sort of capacity you’d choose if you need multiple days of heavy charging (especially for power-hungry devices), but for most commuters it tends to land in the sweet spot between “small enough to carry” and “useful enough to matter”.

Tech specs (as far as the listing states)

- Name: A ADDTOP UltraSlim 10000mAh Power Bank

- Capacity: 10,000mAh

- Fast charging claim: up to 22.5W

- Built-in cables: two built-in USB-C cables (supporting input/output)

- Recharge time (power bank): fully recharged in about 2 hours

- Included in the package: the power bank, a USB-C charging cable, and a user guide

Safety features and warranty: worth factoring in

The listing highlights advanced protection against overcharge, overcurrent, and short-circuit. That matters because a compact pack that’s designed to travel should be treated as a device that you’ll carry in bags and pockets—so basic safety protections aren’t a “nice-to-have”, they’re part of whether it feels sensible to own.

There’s also mention of a 3-year replacement warranty. That’s a strong support signal on paper, though of course it won’t replace the need to check the warranty terms through the retailer listing.

Compatibility & requirements

- The description specifically mentions fast charging for iPhone 17, and you can also use it with other USB-C compatible devices.

The important limitation here is simple: fast charging depends on whether your specific phone/device supports the relevant USB-C charging profile. If your device can only draw lower power, you’ll still get charging, just not the “fast” experience being advertised.

Should you buy it?

Final verdict

It makes sense if you want a lightweight 10,000mAh power bank that removes cable clutter thanks to built-in USB-C leads, and you care about topping up quickly while you’re out. The built-in cable convenience, compact form, and the stated safety protections make it feel like a practical buy for commuting, day trips, and busy schedules where you don’t want to manage separate charging accessories.

It’s not the best match if you’re chasing maximum charging capacity for long days away, or if your priority is a “plug in once and leave it” wall-charger replacement. Also, if your device doesn’t support the fast charging behaviour implied by up to 22.5W, the headline speed claims may feel a bit underwhelming.

Mini FAQ

Is the charging cable really built in?

Yes—two USB-C cables are described as built into the power bank, which should reduce the need for extra leads while you’re out.

Can I recharge the power bank itself without extra cables?

The listing says it includes a USB-C charging cable, and it also states the built-in USB-C cables support input/output, so you’re not left totally stranded on the charging side.

How fast does it charge phones?

The listing quotes fast charging up to 22.5W and gives a specific example for iPhone 17 (0% to 71% in 30 minutes). Real results can vary by device and charging conditions.

What’s in the box?

The power bank, a USB-C charging cable, and a user guide are listed as included.

Is it safe to carry around?

Overcharge, overcurrent, and short-circuit protection are mentioned, which is reassuring for everyday travel use.