# What is the lightest and smallest external battery for travel? — Verified Specification Comparison

> All specification data verified from official manufacturer documentation.

What is the lightest and smallest external battery for travel?

## Products

### Anker Nano Battery Foldable USB-C 5000mAh
```yaml
product: anker-nano-battery-foldable-usb-c-5000mah
brand: Anker
price_gbp: 17.74
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
weight: 100g
capacity: 5000mAh
output_current: 3A, 2.22A, 2.25A
output_voltage: 5V, 9V, 10V
number_of_ports: 2
input_charging_method: USB-C
```

- **Price:** £17.74 [^1]
- **Summary:** This compact 5000mAh power bank has a foldable built-in USB-C connector, a second USB-C port, and up to 18W total output. Its small size and 100g weight make it suitable for charging smartphones during daily use or travel.
- **Ideal For:** It suits travelers seeking the lightest and smallest external battery because it weighs only 100g, measures about 3.03 x 1.45 x 0.98in, and includes a foldable USB-C connector that eliminates the need to carry a separate cable.
- **Additional Sources:** [^2], [^3]

---
## References & Sources
[^1]: Anker, accessed 2026-09-13. https://www.anker.com/products/a1653-usb-c-portable-charger-5000mah
[^2]: Best Buy, accessed 2026-09-13. https://www.bestbuy.com/product/anker-nano-power-bank-5000mah-22-5w-w-built-in-foldable-usb-c-connector-black/JJ8586VWSW
[^3]: Desertcart, accessed 2026-09-13. https://www.desertcart.ph/products/553010203-anker-nano-power-bank-mini-portable-charger-with-built-in-foldable-usb-c-connector-5-000-m-ah-battery-pack-22-5-w-for-i-phone-15-samsung-s-23-series-note-20-series-lg-huawei-i-pad-air-pods-and-more