VEEKTOMX 20000mAh Portable Charger Review: A Heavy, Honest Brick

I bought two of these — a pink one for my daughter and a light blue one for my wife. Both of them love them. That’s a good start for a review.

What it is

The VEEKTOMX 20000mAh Portable Charger is a brick-style power bank. It comes with built-in cables — one USB-C and one iPhone (Lightning-style) cable — so you don’t need to pack your own. It also has a USB-A port, for five total outputs. The top has an LED display that shows the remaining charge as a percentage, which is a real step up from the old four-dot indicators. It supports fast charging and is marketed for the current iPhone and Samsung Galaxy lineups. At the time of this review, Amazon has it for $36.99.

Living with it

The way it actually gets used in our house is through the USB-C and the USB-A ports. The built-in iPhone cable is there, but neither my daughter nor my wife really plugs into it — they’re both on USB-C phones and tablets, so that’s what they reach for. The iPhone cable just comes along. That’s fine; it doesn’t cost anything to ignore it.

The first thing you notice is the percentage display. I love that it shows exact numbers — 100%, 50%, 73%. It takes the guessing out of it. I’ve had power banks that show four little dots, and the dots lie to you. This one tells you the truth.

Now the capacity. It holds a ton of charge. My daughter gets bussed to school, about an hour each way, so two hours a day in the car. She takes her tablet and uses it on the ride. We charge the power bank over the weekend, and it lasts her the whole school week powering that tablet. Once a week is all we need. My wife is even less demanding on hers — I don’t think she charges it even once a week, and it’s always ready when she needs it.

The car is where this thing really earns its keep. My wife keeps it in her purse. When a kid in the back seat needs a charge, she just pulls it out, hands it over, and they keep going. Doesn’t miss a beat. That’s the kind of thing you can’t put on a spec sheet, but it’s the whole reason you’d own one.

In terms of how many phones it can charge, I’ve watched it do three, four, five full phone charges before it taps out. More often it’s charging tablets, which have bigger batteries, and even then it goes a week or two between charges. The capacity is real. It is what it says it is.

The weight, though — they’re heavy. That’s the trade for 20000mAh; physics is physics. They’re not pocket-sized. They go in a backpack or a purse. I do like that they feel sturdy, like they could survive being dropped in a cup holder or tossed in a bag without me worrying. And there’s a little handle on the side. I love that handle. It makes it easy to grab and pull out of a bag without fumbling.

The thing that sold me on this model over others I’ve owned was the built-in cables. Cables are always the pain — you have a power bank but no cable, so it’s a brick that does nothing. With this, the cables are attached. You just pick it up and go. That’s a big deal in real life, and it’s part of why I bought a second one.

It does take a long time to charge the unit back up. That’s expected, though. You put 20000mAh in, it takes a while to fill it back up. Not a complaint — just how it works.

What I liked

• The percentage display. Exact numbers, not dots.
• Real-world capacity. Charges phones three, four, five times; powers a tablet all week.
• Built-in cables. No hunting for a cable at the bottom of a bag.
• The little side handle. Sounds small, matters a lot.
• Sturdy feel. Heavy but solid.
• The price. $36.99 for this much battery is a good number.

What annoyed me

Two things, and one is small.

First, the weight. It is heavy. You feel it in your bag. That’s the cost of 20000mAh and there’s no way around it, but I’m not going to pretend it isn’t there.

Second — and this is the small quibble — the cable setup. I don’t need the iPhone cable; nobody in my house uses it. I’d rather have two USB-C ports and a USB-A. If VEEKTOMX made a version with that layout, I’d buy that one. It’s a minor note, not a dealbreaker, on an otherwise great product.

Who it’s for / who should skip it

If you travel, commute, or have kids who burn through tablet and phone batteries in the car, this is exactly what you want. It’s also a solid pick for anyone who hates keeping track of loose cables — the built-ins solve that problem. It fits iPhone and Samsung households with current flagships well.

If you want something pocket-sized for a night out, skip it. It’s too heavy for that. If you’re a one-phone user who already has a smaller 5000 or 10000mAh bank that does the job, you don’t need this. And if you live and die by USB-C with zero iPhone devices, you’ll have a cable on this unit you never touch. You can live with that, but it’s worth knowing.

Verdict

A big, heavy, honest power bank that does what it says and costs less than you think.

Grade: A

For the nerds

Spec	Detail
Brand / Model	VEEKTOMX 20000mAh Portable Charger
Capacity	20,000 mAh
Outputs	5 total — built-in USB-C, built-in iPhone (Lightning), 1× USB-A
Display	LED percentage indicator
Fast charge	Yes
Marketed for	iPhone 17/16/15/14, Samsung Galaxy S25/S24
Weight class	Heavy — backpack or purse, not pocket
Built-in handle	Yes
Price (at review)	$36.99 at Amazon

Price math: 20000mAh for $36.99 works out to about $1.85 per 1000mAh. For a name-brand brick with built-in cables and a percentage display, that’s a strong number — most quality 20000mAh banks with similar features sit in the $45–$60 range, so you’re paying mostly for the convenience of the integrated cables.

Plain-language note on mAh: milliamp-hours is just a measure of how much charge a battery stores — think of it like the size of a gas tank. A 20000mAh bank has roughly four times the capacity of a 5000mAh one. In practice that means it refills a modern phone (around 4000–5000mAh) about four to five times, or runs a tablet for days of light use. That’s why one weekly charge covers a whole school week of tablet time on a commute. Bigger tank, longer run.