Stuffcool Maverick Mini 20,000mAh Powerbank: Price, features, verdict

I don’t know about you, but there’s something deeply satisfying about watching a dwindling phone battery tick upward – especially when you’re far from a power outlet. And that’s how it went for a fortnight, tethered as I was on most occasions only to a palm-sized chunk of plastic called the StuffCool Maverick Mini. 

Over that period of time, the 20,000mAh powerbank became less of a gadget and more of a travel companion, not unlike a trusted sidekick that quietly ensures your digital lifeline stays alive through long commutes, absent-mindedness, and unplanned long video calls with family and friends.

Let me rewind a bit…

The StuffCool Maverick Mini is a 20,000mAh BIS-certified power bank made in India. It’s smaller than most external hard drives I own, yet dense enough to exude confidence – like a tiny tank in matte black. Two built-in cables (USB-C and Lightning) emerge from its sides like retractable claws, ensuring that you never have to suffer from the curse of forgetting to pack one. There’s a USB-A port for a third device, and a crisp digital display that shows remaining juice down to the percentage. It’s equal parts utilitarian and elegant, a refreshing change in a market bloated with plastic bricks pretending to be smart.

Also read: StuffCool Giga 65W: A 20000 mAh powerbank your gadgets deserve

But hey, there’s no point in waxing eloquent about the design of what’s ultimately a powerbank. That’s just a prelude to the StuffCool Maverick Mini’s performance – which is an entertaining story.

Charging experience

Over three real-life charging sessions, I pushed the Maverick Mini to see how well it could juice up my iPhone 15 Pro via its built-in 20W USB-C cable. Spoiler: it did not disappoint.

In my first test, the iPhone jumped from 6% to 27% in just 10 minutes, sipping power greedily. By 10:24 pm, the iPhone hit 99%, and the Maverick Mini had only dropped from 57% to 33%. That’s 93 percentage points of iPhone battery gained for 24 percentage points of Maverick’s capacity. Efficiency? Pretty solid, I’d reckon.

Another test – starting from just 2% on the iPhone – saw the phone hit 87% in exactly an hour. Meanwhile, the power bank still stood at a healthy 80%. This kind of quick delivery isn’t for theoretical bragging rights anymore, as it’s your lifeline when your Uber ride is delayed, your boarding gate changes, or your GPS becomes your only guide through a city you don’t know.

Then came the third charge. Starting at 19%, my iPhone reached 85% in just over an hour while the Maverick drained from 80% to 63% – which is enough juice left to go again or power other gadgets I carry, like my AirPods.

Also read: UltraProlink Boost Unity: Provides 100W GaN charging sanity

As you would have it, in a move straight out of Murphy’s Law, my AirPods Pro 2 and their case both hit 0% just before an important call. I plugged them into the Maverick at 9:01 am (with the powerbank itself at 43%) and within 37 minutes, the case was at 48%, pods were at 85%, and the Maverick had only dropped by 2% in battery drain. Crisis averted.

And when the Powerbank needed charging?

Here’s the device’s small Achilles heel – not fatal, but noticeable all the same. When I plugged in the Maverick Mini into a 22W wall adapter to gauge refill times, it still powered up at 18W – its mentioned charging rate. As far as how long did it take? Let’s just say patience is a virtue. 

Starting from 0%, the Maverick barely nudged to 1% after 18 minutes. After an hour, it had clawed up to 8%. At two hours, it was at 15%, and after three hours, we hit 24%. You’ll need upwards of six to seven hours to get it close to full. This isn’t a knock on StuffCool specifically – most high-capacity banks charge slowly without PD chargers. But it does temper expectations. This is a device best left for recharging overnight, in my experience.

Verdict: Should you buy it?

If you’re the kind of person who juggles an iPhone, a work Android, and a third device like wireless earbuds, or if your workday regularly outlasts your phone battery (which is most of us), this is a product worth owning. The dual cables simplify your life, its 22.5W USB-A port covers legacy devices, and the digital display helps with your range anxiety. It’s not flashy, but it doesn’t need to be.

Priced at ₹2,299, this Made-in-India charger feels like the kind of product more brands should aspire to build – practical, reliable, and sensibly priced. The only real drawback is its refill time, which makes planning ahead a must. Buy it for the built-in cables, keep it for the peace of mind.

Click to buy Stuffcool Maverick Mini 20,000mAh Powerbank on Amazon.in.

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Jayesh Shinde

Executive Editor at Digit. Technology journalist since Jan 2008, with stints at Indiatimes.com and PCWorld.in. Enthusiastic dad, reluctant traveler, weekend gamer, LOTR nerd, pseudo bon vivant. View Full Profile