Best Portable Chargers for Samsung Phones (2026 UK Guide)
Quick Summary
- Best Overall: Anker 737 Power Bank (PowerCore 24K) — Superb 24,000mAh capacity with 140W PD output, perfect for Galaxy S and Z series
- Best Budget: INIU 10,000mAh Power Bank — Reliable 22.5W fast charging at a wallet-friendly price
- Best Premium: Zendure SuperTank Pro — Ultra-high 100W output, 26,800mAh, and a crisp LCD display for power users
Samsung Galaxy phones are among the most power-hungry smartphones on the market, with vibrant AMOLED displays, 5G connectivity, and high-performance processors draining batteries faster than ever. Whether you own a Galaxy S25 Ultra, a Z Fold 6, or a budget A-series handset, a quality portable charger is an essential accessory in 2026. This guide cuts through the noise to bring you the best portable chargers for Samsung phones across every price point — from everyday commuter picks to heavy-duty travel companions. We’ve considered capacity, charging speed, USB-C compatibility, and Samsung 25W/45W fast-charging support so you can make a confident, informed choice.
What to Look For in a Samsung Portable Charger
- Samsung Fast Charging Compatibility: Look for power banks supporting 25W USB-C PD or 45W Super Fast Charging to match what your Galaxy handset can accept — standard 5W chargers will leave you waiting hours.
- Capacity (mAh): A 10,000mAh bank offers roughly 2–2.5 full charges for most Galaxy S phones, while 20,000mAh+ suits multi-day trips or charging tablets alongside your phone.
- Portability and Weight: Higher capacity usually means more weight. Balance your daily needs — a slim 10,000mAh model slips into a jacket pocket, whereas a 26,800mAh brick is better suited to a backpack.
- Number and Type of Ports: USB-C is essential for modern Samsung devices. Having at least one USB-C input/output plus a USB-A port gives flexibility to charge multiple devices simultaneously without adapters.
Comparison at a Glance
| Product | Price | Best For | Rating |
|---|---|---|---|
| Anker 737 Power Bank (PowerCore 24K) | £89 | All-round daily & travel use | ★★★★★ |
| INIU 10,000mAh Power Bank | £22 | Budget-conscious everyday use | ★★★★☆ |
| Zendure SuperTank Pro | £129 | Power users & frequent travellers | ★★★★☆ |
Our Top Picks
Anker 737 Power Bank (PowerCore 24K)
The Anker 737 is the gold standard for Samsung users in 2026. Its 24,000mAh capacity combined with a bidirectional 140W USB-C port means it can charge a Galaxy S25 Ultra from flat to full in under an hour, and still have juice left for two more full charges. The smart digital display shows exact battery percentage and wattage in real time, removing any guesswork. It also supports 65W recharging so it refills itself in roughly 1.5 hours — far quicker than most rivals. Two USB-C ports and one USB-A port mean you can charge three devices simultaneously, making it ideal for travellers juggling a Samsung phone, tablet, and wireless earbuds.
Pros
- 140W output charges Samsung Galaxy S25 Ultra at full speed
- Real-time digital display shows exact wattage and percentage
- Three ports for simultaneous multi-device charging
Cons
- Bulkier and heavier than slim 10,000mAh options
- Premium price tag may not suit tight budgets
INIU 10,000mAh Power Bank
If you want reliable fast charging for your Samsung without breaking the bank, the INIU 10,000mAh is a phenomenal value pick. It delivers 22.5W USB-C output, which is fully compatible with Samsung’s 25W fast charging standard — the slight difference in wattage is negligible in real-world use. At just 180g, it slips effortlessly into a coat pocket or small bag, making it ideal for daily commuters or students. The LED indicator clearly shows remaining charge in four increments, and the USB-C input means you can recharge it with the same cable as your Samsung phone. For the price, the build quality is surprisingly solid, with no flex or creaking.
Pros
- Exceptional value — under £25 with fast charging
- Lightweight and genuinely pocket-sized design
- USB-C in and out — one cable for everything
Cons
- Only around 1.5–2 full charges for larger Galaxy models
- No pass-through charging support
Zendure SuperTank Pro
The Zendure SuperTank Pro is built for Samsung power users who carry multiple devices and demand the fastest possible charging in the sleekest enclosure. Its 26,800mAh capacity provides roughly five to six full charges for a Galaxy S25, while the 100W PD output via USB-C charges Samsung’s 45W Super Fast Charging phones at near-maximum speed. What truly sets this apart is its crystal-clear LCD display, which shows precise battery percentage, input/output wattage, and estimated time to full — invaluable information when you’re counting down at an airport. All four ports (two USB-C, two USB-A) can operate simultaneously at a combined 100W. The aircraft-grade aluminium shell feels genuinely premium and withstands the rigours of frequent travel.
Pros
- 26,800mAh — enough for a full weekend away
- Detailed LCD shows time remaining and live wattage
- Premium aluminium build feels robust and travel-ready
Cons
- Heavier at 630g — not suited for light packing
- High price requires commitment from the buyer
Who Should Buy This?
If you’re a daily commuter, student, or light traveller who simply wants to avoid a dead Samsung battery during the working day, the INIU 10,000mAh is all you need. It’s slim, fast, and affordable — a genuine no-brainer purchase that will serve most Galaxy A and S-series users perfectly. For anyone working from coffee shops, attending full-day events, or regularly catching flights, the Anker 737 offers the ideal balance of high capacity and fast charging speed without being prohibitively expensive.
The Zendure SuperTank Pro is specifically for Samsung Galaxy power users — think Z Fold owners, mobile content creators, or road warriors who carry a phone, tablet, and wireless earbuds and need everything topped up with zero fuss. If you use your Samsung device heavily for work or media creation and hate hunting for plug sockets, the premium investment is absolutely justified by the sheer convenience it delivers.
Final Verdict
Choosing the best portable charger for your Samsung phone comes down to how, where, and how often you use your device. Our top overall pick, the Anker 737, delivers unmatched versatility and speed for the majority of users. Budget shoppers will find the INIU 10,000mAh offers surprisingly capable performance at a fraction of the cost. And for those who demand the absolute best, the Zendure SuperTank Pro is a premium powerhouse. Whichever you choose from this list in 2026, you can be confident your Samsung Galaxy will stay charged and ready throughout even the longest of days.
Frequently Asked Questions
Do portable chargers work with Samsung’s fast charging?
Yes, provided the power bank supports USB Power Delivery (USB-C PD) at 25W or above. Samsung’s Super Fast Charging uses the PD 3.0 protocol, so look for a portable charger that explicitly states 25W PD or higher output on its USB-C port. The power banks in this guide all meet or exceed that requirement.
How many times can a 10,000mAh power bank charge a Samsung Galaxy S25?
The Samsung Galaxy S25 has a 4,000mAh battery, so a 10,000mAh power bank will provide approximately 1.8 to 2.2 full charges in real-world use — energy is lost to heat and conversion inefficiency, typically around 10–15%. For the Galaxy S25 Ultra with its 5,000mAh battery, expect closer to 1.5 full charges per 10,000mAh.
Can I take a portable charger on a plane in 2026?
Yes, but only in your carry-on hand luggage — never in checked baggage. UK Civil Aviation Authority regulations permit lithium-ion power banks up to 100Wh (roughly 27,000mAh) in carry-on bags without airline approval, and up to 160Wh with prior airline consent. All three products in this guide fall within the standard 100Wh limit.
Is wireless charging available on portable chargers for Samsung phones?
Some premium portable chargers include a Qi2 or MagSafe-style wireless charging pad on their surface, and these will work with Samsung Galaxy S and Z series handsets that support wireless charging. However, wired USB-C charging is significantly faster and more efficient, so wireless power banks are best reserved for top-up convenience rather than fast recharging.
What’s the difference between mAh capacity and actual charging performance?
mAh (milliamp hours) describes the raw stored energy, but real-world charging efficiency is typically 80–90% due to heat loss and voltage conversion. A 20,000mAh bank at 3.7V internal voltage is equivalent to roughly 74Wh, but your Samsung phone’s battery is measured at 5V, meaning you receive around 14,000–16,000mAh of usable charge. Always check watt-hour (Wh) ratings for the most accurate capacity comparison.