There are countless power banks that can charge multiple devices, including smart watches. However, most of them simply add a wireless charging pad for the watch onto a regular power bank. To be honest, if your main goal is just to keep your watch powered, not everyone wants to carry a large and heavy power bank. If you’re tired of bringing a separate charging cable and adapter for your watch when traveling, but don’t want to sacrifice portability, there’s a better solution. Let’s take a look at the best smart watch power banks of 2026.
Best Power Bank for Samsung Watch 8: SwanScout 303S
The SwanScout 303S is one of the best portable chargers designed specifically for the Samsung Watch 8 and other Galaxy Watch models. It is lightweight, compact, and easy to carry, making it an ideal power bank for Samsung smartwatches when traveling or commuting.
Key Specifications:
- Weight: Only 3.14 oz (89 g)
- Size: 0.83 × 3.15 × 3.15 in
- Battery Capacity: 1800mAh, provides 2–3 full charges for Samsung watches (depending on model and size)
Features:
- Adjustable watch stand to fit different Samsung Watch sizes
- LED indicator to show remaining battery level
- Strong magnetic wireless charging for a stable connection
Compatibility:
Compatible with Samsung Galaxy Watch 8 Classic / 8 / 7 / Galaxy Watch Ultra / Galaxy Watch 6 Classic / Galaxy Watch 6 / Galaxy Watch 5 Pro / Galaxy Watch 5 / Galaxy Watch 4 / 4 Classic / Galaxy Watch 3 / Galaxy Watch Active 2 / Active 1
(Not compatible with Galaxy Watch (42mm/46mm), Gear S2 / S2 Classic / S3 / Gear Sport)
Best Portable Charger for Google Pixel Watch & Fitbit: SwanScout 305G2
The SwanScout 305G2 is a compact portable charger designed for Google Pixel Watch 2 and 3, as well as selected Fitbit smartwatches. Its ultra-light design and keychain feature make it perfect for everyday carry.
Key Specifications:
- Weight: Only 2.12 oz (60 g)
- Size: 0.58 × 2.52 × 1.81 in
- Battery Capacity: 1800mAh, supports 3–4 full charges for Pixel Watch 3 / 2, or 5-6 full charges for Fitbit Versa 4 / 3
Features:
- Auto-aligned magnetic charging pins for easy connection
- Built-in keychain for convenient travel use
- LED indicator to display remaining battery level
Compatibility:
Compatible with Google Pixel Watch 3 / 2, Fitbit Versa 4 / 3, Fitbit Sense 2 / Sense, Fitbit Ace LTE
(Not compatible with Pixel Watch 1 and Pixel Watch 4)
Why You Need a Power Bank for Your Smartwatch?
Modern smartwatches are becoming more powerful than ever. New models now feature Always-On Display, built-in GPS tracking, advanced health monitoring, and AI-powered functions. However, battery life remains one of the biggest pain points for smartwatch users.
According to CNET, the Samsung Watch 8 (40mm) typically lasts less than 30 hours with Always-On Display enabled. PCMag's test suggests that the Google Pixel Watch 3 (41mm) delivers around 34 hours of normal use with Always-On Display turned on. With daily charging, this may be acceptable for everyday use. But during long trips or busy travel days, you often need to bring a separate charging cable, and sometimes even an extra power adapter just for your watch.
This is where a portable smartwatch power bank becomes essential. A compact power bank designed specifically for smartwatches can easily fit in your pocket or attach to your backpack, giving you a simple and cable-free way to keep your watch charged on the go.
If you want to avoid battery anxiety during business trips or outdoor activities without filling your bag with messy charging cables, the SwanScout smartwatch power banks are one of the best portable charging solutions of 2026. Subscribe to our newsletter to enjoy an exclusive 10% discount for new customers!
