
BatteryRank comparison
Which tradeoff fits your kit?
Choose Nano for its integrated USB-C cable and 30W single-port input and output. Choose Nitecore when its nominal 143g weight matters more than peak charging power: it rates input and individual output at 22.5W. Their 10,000mAh labels do not establish equal usable USB energy.
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 Nano Power Bank (30W, Built-In USB-C Cable) | NITECORE NB10000 Gen4 |
|---|---|---|
| Manufacturer-rated capacityOEM capacity rating | 10000 mAhclaimed. Show sourceclaimed sourceanker.com ↗checked 2026-10-07 · OEM capacity rating | 10000 mAhclaimed. Show sourceclaimed sourcenitecore.com ↗checked 2026-10-07 · OEM capacity rating · The manual rates it 10,000mAh at 3.9V; the product page also states 5,000mAh at 7.8V, equivalent to 10,000mAh at 3.9V. |
| Strongest single USB-C outputMaximum output from one wired USB-C port | 30 Wclaimed. Show sourceclaimed sourceanker.com ↗checked 2026-10-07 · Maximum output from one wired USB-C port · Maximum output from one USB-C port or the built-in USB-C cable; total output across ports is 24W. | 22.5 Wclaimed. Show sourceclaimed sourcenitecore.com ↗checked 2026-10-07 · Maximum output from one wired USB-C port · Maximum from either output; the manual agrees. |
| Single USB-C inputStrongest standard USB-C input; proprietary dock excluded | 30 Wclaimed. Show sourceclaimed sourceanker.com ↗checked 2026-10-07 · Strongest standard USB-C input; proprietary dock excluded · Maximum through one USB-C port or built-in USB-C cable. | 22.5 Wclaimed. Show sourceclaimed sourcenitecore.com ↗checked 2026-10-07 · Strongest standard USB-C input; proprietary dock excluded · USB-C IN maximum; product page agrees. |
| Manufacturer-listed weightOEM-listed product weight | 215 gclaimed. Show sourceclaimed sourceanker.com ↗checked 2026-10-07 · OEM-listed product weight | 143 gclaimed. Show sourceclaimed sourcenitecore.com ↗checked 2026-10-07 · OEM-listed product weight · 143g ±5g, with the lanyard charging cable/accessory excluded. |
| Explicit OEM-rated energyShown only when the manufacturer publishes watt-hours | Not sourced | 39 Whclaimed. Show sourceclaimed sourcenitecore.com ↗checked 2026-10-07 · Shown only when the manufacturer publishes watt-hours · Both the manual and product page state 39Wh. |
| Combined output ceilingMulti-port total; distinct from one-port output | 24 Wclaimed. Show sourceclaimed sourceanker.com ↗checked 2026-10-07 · Multi-port total; distinct from one-port output | 15 Wclaimed. Show sourceclaimed sourcenitecore.com ↗checked 2026-10-07 · Multi-port total; distinct from one-port output · The manual lists total output as 5V/3A (15W maximum) when outputs are combined. |
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
Pocket convenience versus pack weight
Nano lists 215 g with its built-in USB-C cable. NB10000 Gen4 lists 143 g ±5 g, excluding its lanyard charging cable. The pack-only difference is 72 g; count the cable you actually carry before treating that as the complete kit difference.
Check 02
A capacity label is not a recharge count
Both labels state 10,000 mAh. Nitecore explicitly publishes 39 Wh; our Nano source does not establish Wh. Neither figure is a measured phone recharge count. NB10000’s two USB-C outputs also require the right cables for each device.
Check 03
Two devices divide the budget
Nano offers 30 W from one USB-C connection but 24 W combined. Nitecore offers 22.5 W from either individual output but 15 W combined. For two devices, compare those shared ceilings rather than the larger single-port ratings.
Review and check current availability
Availability checked 2026-10-07. Stock can change.
Availability checked 2026-10-07. Stock can change.
