URBN Mega Stack Launched in India: 25,000mAh and 100W for ₹4,999

Last updated: September 2026

Power banks have been quietly getting more serious. A few years ago, 10,000mAh at 18W was the sensible default; now laptops charge over USB-C, phones ship with 6,000mAh-plus batteries, and the accessory has to keep up. URBN's new Mega Stack is squarely aimed at that shift — a 25,000mAh brick with 100W output, launched in India on 2 September 2026 at ₹4,999.

What makes it worth a closer look is not the headline capacity but the combination: a genuinely high wattage, a cable you cannot forget at home, and a capacity rating that sits just under the threshold most airlines apply to lithium batteries in cabin baggage. That last detail is the one buyers most often get wrong, so we have gone into it properly below.

Price and Availability

The URBN Mega Stack is priced at ₹4,999 and is sold via URBN's own store at UrbnWorld.com and through Amazon.in. It comes in black and grey. URBN lists a 6-month warranty, which is shorter than the 12 to 18 months some rivals offer and is worth factoring into the decision at this price.

Full Specifications

• Capacity: 25,000mAh lithium-polymer, rated 96.25Wh at 3.85V
• Maximum output: up to 100W
• Ports: one USB-C port, one integrated USB-C cable, one USB-A port
• Per-port output: USB-C port and built-in cable each up to 20V/5A (100W); USB-A up to 22.5W
• Combined output: when charging three devices at once, total output is capped at 5V/4A (around 20W)
• Protocols: Power Delivery 3.0, PPS up to 100W, Quick Charge 4+/3.0/2.0, Apple 20W/2.4A and Samsung fast-charge standards
• Display: digital readout showing battery percentage and charging status
• Recharge time: roughly 2–3 hours with a 65W charger; about 10–11 hours with a standard 12W adapter
• Size and weight: 106 x 73 x 40mm, 430.3g
• Protection: multi-layer circuitry managing temperature, current and voltage

The Airline Rule Worth Knowing

Lithium batteries in cabin baggage are governed by watt-hours, not milliamp-hours — and most airlines follow the widely used 100Wh threshold, below which a spare battery is allowed in carry-on without special approval. The Mega Stack is rated at 96.25Wh, which places it just under that line. That is almost certainly a deliberate design choice, and it is the main reason a 25,000mAh pack can exist at this size at all.

Two caveats, because this matters: power banks must be carried in the cabin, never in checked baggage, and individual airline and country rules do vary. Check your carrier's policy before you fly rather than relying on the number alone.

The Three-Device Catch

URBN advertises simultaneous charging of three devices, and that is accurate — but the combined output in that mode drops to roughly 20W across all three. In practice that means the Mega Stack is a 100W charger for one device, or a slow trickle charger for three. It is not both at once. For most people that is fine: you use the full wattage for a laptop or phone, and the multi-device mode overnight. Just do not buy it expecting fast charging on three ports simultaneously.

Should You Buy It?

Buy it if you travel with a USB-C laptop or a tablet alongside your phone, or if you regularly go a full day without a socket. At ₹4,999 for 100W and 96.25Wh, the price per watt-hour is reasonable, and the built-in cable removes the most common failure point — the cable you left in a hotel room. The digital display is genuinely useful for knowing when to recharge the pack itself.

Skip it if you only charge a phone. At 430g this is a heavy object to carry daily, and a 10,000mAh pack at a third of the weight will refill most 2026 phones once or twice. The 6-month warranty is the weakest part of the package, and if you rarely need more than 30W, you are paying for headroom you will not use. Our explainer on whether more watts is always better is worth reading before you spend up.

Do Not Forget the Phone Itself

A high-wattage charging setup only matters if the phone survives the trip. Travel is where most screen damage happens — bags, pockets, car consoles, luggage belts. A curved-screen flagship is particularly exposed, because the edges take impact first and are the hardest part to protect well. Full glue curved tempered glass bonds across the entire panel rather than just the perimeter, which is what keeps the edges from lifting and catching. Here are six real options currently in stock at Royal Star:

Browse the full glue tempered glass range or see every tempered glass fit we stock.

Frequently Asked Questions

What is the price of the URBN Mega Stack power bank?

It is priced at ₹4,999 in India and is sold through UrbnWorld.com and Amazon.in in black and grey.

Can you carry a 25,000mAh power bank on a flight?

The Mega Stack is rated 96.25Wh, which sits under the 100Wh threshold most airlines apply to spare lithium batteries in cabin baggage. Power banks must always travel in the cabin, never in checked luggage, and rules vary by airline and country — confirm with your carrier before flying.

Does the URBN Mega Stack charge laptops?

Yes, provided your laptop charges over USB-C Power Delivery. The 100W output on the USB-C port and the built-in cable is enough for most thin-and-light laptops, though larger machines may charge more slowly than with their own adapter.

How long does the Mega Stack take to recharge?

URBN quotes roughly 2 to 3 hours with a 65W charger. With a basic 12W adapter it takes around 10 to 11 hours, so a higher-wattage wall charger is worth pairing with it.

Final Thoughts

The Mega Stack is a specialist tool rather than an everyday one. If your bag already carries a laptop and a phone and you spend real time away from sockets, ₹4,999 for 100W and just-under-airline-limit capacity is a fair deal, and the built-in cable is a small design decision that pays off constantly. If you only ever top up a phone, this is more brick than you need — and the short warranty is a fair reason to look at alternatives.

Stay tuned to our blog for accessory launches, charging standards explained plainly, and honest buying advice from the Royal Star team.