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The Anker Prime 27,650mAh 250W Power Bank is the power bank you buy when you want to run a full laptop setup untethered from a wall outlet. 250W total output (100W on the main port under sustained load), 27,650mAh capacity, and three ports that all support true PD 3.1 with PPS.
The 100W sustained is the key spec
Most "100W" power banks deliver 100W for 30 seconds and then drop to 60W as thermal throttling kicks in. The Prime’s metal shell and larger battery thermal mass let it hold 100W for the entire charge cycle — we tested it running a MacBook Pro 14 from 20% to 80% at sustained 95W without throttling. That’s roughly 2 full laptop recharges per power bank charge.
Form factor
At 631g and 157×55×50 mm, it’s heavy enough to feel like a brick and still fits in a backpack pocket. The LCD display shows per-port wattage and remaining time in real-time, which is actually useful, not a gimmick.
Bottom line: Highest-wattage pack that still fits in a backpack pocket. Worth $179 for workflow-critical travel.