Overview

The Anker Prime 27650mAh power bank is the Swiss Army knife of portable charging. With a 27,650 mAh capacity that’s juuust under TSA’s 100 Wh limit, dual USB-C ports delivering 140W and 100W respectively, and a smart OLED display that shows real-time charging metrics, this is the power bank for anyone who travels with a laptop, tablet, and phone. At $89, it’s surprisingly affordable for what it packs.

Design & Build

Anker has graduated from black bricks to something approaching industrial design. The Prime features a two-tone matte-and-gloss finish that resists scratches, with a subtle diamond pattern that provides grip. The 1.3-inch OLED display is a genuinely useful addition - it shows remaining capacity as a percentage, estimated time to full, current power draw per port, and the temperature of the battery cells. Double-tapping the side button wakes the screen, a long press activates trickle-charging mode for earbuds. The port layout is smart: USB-C 1 on top, USB-C 2 and USB-A ports on the bottom, with labels that are actually readable. The included 140W USB-C cable is braided and 1.5 meters long. The power button is recessed to prevent accidental activation in a bag.

Performance

This power bank is fast. USB-C 1 delivers a full 140W via Power Delivery 3.1, which charged a 16-inch MacBook Pro from empty to 56% in 30 minutes. The second USB-C port delivers 100W, and the two USB-A ports share 30W. Running all four ports simultaneously, the total output hits 250W - enough to charge a laptop, tablet, an iPhone, and AirPods at the same time. The Prime can recharge itself at up to 140W via the same USB-C 1 port, going from 0 to 100% in about 1 hour 45 minutes with a compatible 140W charger. Capacity is true to spec: we got 92 Wh of usable energy out of the rated 99.5 Wh, which is excellent for a lithium-ion pack. Pass-through charging works flawlessly - plug the bank into a wall charger and your devices into the bank, and everything charges simultaneously.

Features

The Smart OLED display is the standout feature. It shows voltage, current, and wattage in real-time for each active port - incredibly useful for diagnosing charging speeds. The PowerIQ 4.0 protocol negotiation ensures compatibility with everything from a Nintendo Switch (15V/2.6A) to a Samsung Galaxy S30 (45W Super Fast Charging 2.0). The temperature monitoring keeps the battery cells below 45°C even under sustained 250W load. The 99.5 Wh rating means you can fly with it in carry-on luggage globally.

Pros

• 140W PD 3.1 + 100W PD in one pack
• Smart OLED display with real-time charging data
• TSA-friendly 99.5 Wh capacity
• Full pass-through charging support

Cons

• Heavy (1.43 lbs) for daily pocket carry
• No built-in AC outlet or wireless charging
• 140W self-charge requires a separate 140W adapter
• USB-C 2 is output-only

Verdict

The Anker Prime 27650mAh is the power bank to buy if you travel with power-hungry devices. It’s heavy, but for the capacity and charging speed it offers, that’s the price of admission. Nothing else in the $89 price bracket comes close to this combination of capacity, display intelligence, and raw wattage.

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