Exact-model comparison · US versions
Anker Nano Power Bank (10K, 45W, Built-In Retractable USB-C Cable) vs Anker Nano Power Bank (30W, Built-In USB-C Cable)
The newer Nano raises single-device output and adds a retractable cable. It does not raise the refill ceiling, and its shared output is slightly lower.
BatteryRank comparison
Which tradeoff fits your kit?
Choose A1638 for its retractable cable and 45 W single USB-C output when your device can use that profile. A1259 offers 30 W from its fixed cable or USB-C port and weighs 215 g versus A1638’s listed 231.3 g. Both accept up to 30 W input. The 45 W model is not a refill-speed upgrade, and its 22.5 W shared ceiling is below A1259’s 24 W.
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 (10K, 45W, Built-In Retractable USB-C Cable) | Anker Nano Power Bank (30W, Built-In USB-C Cable) |
|---|---|---|
| Manufacturer-rated capacityOEM capacity rating | 10000 mAhclaimed. Show sourceclaimed sourceanker.com ↗checked 2026-10-07 · OEM capacity rating | 10000 mAhclaimed. Show sourceclaimed sourceanker.com ↗checked 2026-10-07 · OEM capacity rating |
| Strongest single USB-C outputMaximum output from one wired USB-C port | 45 Wclaimed. Show sourceclaimed sourceanker.com ↗checked 2026-10-07 · Maximum output from one wired USB-C port · Maximum from either one USB-C port or the built-in USB-C cable when used individually. | 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. |
| Single USB-C inputStrongest standard USB-C input; proprietary dock excluded | 30 Wclaimed. Show sourceclaimed sourceservice.anker.com ↗checked 2026-10-07 · Strongest standard USB-C input; proprietary dock excluded · Maximum standard USB-C input; output is rated separately. | 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. |
| Manufacturer-listed weightOEM-listed product weight | 231.3 gclaimed. Show sourceclaimed sourceanker.com ↗checked 2026-10-07 · OEM-listed product weight · Converted from Anker’s listed 0.51 lb. | 215 gclaimed. Show sourceclaimed sourceanker.com ↗checked 2026-10-07 · OEM-listed product weight |
| Explicit OEM-rated energyShown only when the manufacturer publishes watt-hours | 36 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 | 22.5 Wclaimed. Show sourceclaimed sourceanker.com ↗checked 2026-10-07 · Multi-port total; distinct from one-port output · Shared maximum when multiple outputs are used; a single USB-C output is rated 45W. | 24 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
The extra output is for one device
A1638 offers 45 W from one USB-C connection; A1259 offers 30 W. Check your phone, tablet or laptop’s required profile. Neither headline guarantees that power to an attached device.
Check 02
Refilling is tied; sharing changes the result
Both accept 30 W input. Attach multiple devices and A1638’s total falls to 22.5 W, while A1259 documents 24 W combined. The newer model’s larger single-output number does not carry over to those situations.
Check 03
Retractable cable or lighter fixed-cable pack?
A1638’s 231.3 g OEM weight is converted from its listed 0.51 lb; A1259 lists 215 g. Both carry a 10,000 mAh label. Only A1638 has an explicit 36 Wh rating in our sources, so we do not claim equal delivered energy or recharge counts.
Review and check current availability
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Availability checked 2026-10-07. Stock can change.
Check price on Amazon ↗
Availability checked 2026-10-07. Stock can change.