Exact-model comparison · US versions
Anker Prime Power Bank (26K, 300W) vs Anker Prime Power Bank (20K, 220W)
Two Prime sizes serve different carry priorities. We compare their strongest single-port output, capacity and refill limits before the combined-output headline.
BatteryRank comparison
Which tradeoff fits your kit?
Both Prime models reach 140W on one USB-C output, so the larger model does not raise the one-laptop ceiling. Choose the 26K for its larger capacity label and 140W standard USB-C input; choose the 20K for its lower 510g carrying weight and 100W input.
Manufacturer ratings · dated source on each value
What the specifications say
Single-port output shows the ceiling for one wired connection. Combined output describes power shared across ports. They answer different questions.
| Measure | Anker Prime Power Bank (26K, 300W) | Anker Prime Power Bank (20K, 220W) |
|---|---|---|
| Manufacturer-rated capacityOEM capacity rating | 26250 mAhclaimed. Show sourceclaimed sourceanker.com ↗checked 2026-10-07 · OEM capacity rating | 20100 mAhclaimed. Show sourceclaimed sourceanker.com ↗checked 2026-10-07 · OEM capacity rating |
| Strongest single USB-C outputMaximum output from one wired USB-C port | 140 Wclaimed. Show sourceclaimed sourceanker.com ↗checked 2026-10-07 · Maximum output from one wired USB-C port · Maximum output from one USB-C port; the 300W rating is shared across three output ports. | 140 Wclaimed. Show sourceclaimed sourceanker.com ↗checked 2026-10-07 · Maximum output from one wired USB-C port · Maximum output from one USB-C port; 220W is the combined output across its three ports. |
| Single USB-C inputStrongest standard USB-C input; proprietary dock excluded | 140 Wclaimed. Show sourceclaimed sourceanker.com ↗checked 2026-10-07 · Strongest standard USB-C input; proprietary dock excluded · Strongest standard single USB-C input. The 150W Anker Protocol mode is excluded; 250W requires both USB-C inputs. | 100 Wclaimed. Show sourceclaimed sourceanker.com ↗checked 2026-10-07 · Strongest standard USB-C input; proprietary dock excluded · Maximum through one USB-C input; the charging-base input is a separate connection. |
| Manufacturer-listed weightOEM-listed product weight | 600 gclaimed. Show sourceclaimed sourceanker.com ↗checked 2026-10-07 · OEM-listed product weight | 510 gclaimed. Show sourceclaimed sourceanker.com ↗checked 2026-10-07 · OEM-listed product weight |
| Explicit OEM-rated energyShown only when the manufacturer publishes watt-hours | 99.75 Whclaimed. Show sourceclaimed sourceservice.anker.com ↗checked 2026-10-07 · Shown only when the manufacturer publishes watt-hours | Not sourced |
| Combined output ceilingMulti-port total; distinct from one-port output | 300 Wclaimed. Show sourceclaimed sourceanker.com ↗checked 2026-10-07 · Multi-port total; distinct from one-port output | 220 Wclaimed. Show sourceclaimed sourceanker.com ↗checked 2026-10-07 · Multi-port total; distinct from one-port output |
Unknown readings stay labelled “Not sourced.” Every displayed rating opens its dated source. Manufacturer claims are not independent output or runtime measurements.
Before you choose
The details that change the decision
Check 01
One laptop versus a shared charging desk
Both Prime models offer 140 W from one USB-C port. The larger model raises total output from 220 W to 300 W across devices; it does not raise the ceiling for one laptop. Check the laptop’s accepted profile and the OEM port-allocation rules.
Check 02
Capacity has a carrying cost
The 26K lists 26,250 mAh at 600 g; the 20K lists 20,100 mAh at 510 g. The larger pack adds 90 g of listed weight. Only the 26K has an explicit 99.75 Wh rating in our sources, so we leave the 20K’s Wh unknown rather than assume equal cell voltage.
Check 03
Refill equipment is part of the choice
The 26K accepts up to 140 W through one standard USB-C input; the 20K accepts 100 W. The 26K’s advertised 250 W refill requires both USB-C inputs. Compare your actual charger and cables, rather than treating that two-input figure as a one-cable limit.
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Availability checked 2026-10-07. Stock can change.
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Availability checked 2026-10-07. Stock can change.