Power Banks & Portable Chargers · 2026

Best Portable Phone Chargers UK

Never run out of battery again. Compare the best portable phone chargers and power banks for travel, commuting, and everyday carry — all with free UK delivery.

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What Capacity Portable Charger Do You Need?

Portable phone charger capacity is measured in milliamp-hours (mAh). Here's a quick guide to choosing the right size.

5,000mAh

~1 charge

Best for: Daily carry, minimal bulk

Weight: ~100g

10,000mAh

~2–3 charges

Best for: Commuting, day trips

Weight: ~200g

20,000mAh

~4–5 charges

Best for: Travel, multi-device

Weight: ~350g

Best Portable Phone Chargers 2026

Our top-rated portable chargers tested for capacity accuracy, charging speed, build quality, and value.

Best Everyday

UGREEN 10,000mAh Slim

4.7/5
10,000mAh·20W USB-C PD£24.99

Ultra-slim design fits in any pocket. 20W USB-C PD fast-charges iPhones and Samsung Galaxy. LED battery indicator.

  • 20W USB-C PD output
  • 18W USB-C input
  • Dual output (USB-C + USB-A)
  • Airline approved (37Wh)
Best for Travel

Baseus 20,000mAh 65W

4.8/5
20,000mAh·65W USB-C PD£39.99

High-capacity travel companion. 65W output charges laptops, phones, and tablets. Digital display shows exact battery percentage.

  • 65W USB-C PD output
  • Charges laptops
  • Digital display
  • Airline approved (74Wh)
Best for iPhone

UGREEN 5,000mAh MagSafe

4.5/5
5,000mAh·7.5W Wireless + 20W USB-C£19.99

MagSafe-compatible wireless power bank. Snaps onto iPhone 13–16 for hands-free charging. Also works wired via USB-C.

  • MagSafe magnetic
  • 7.5W wireless
  • 20W USB-C wired
  • Ultra-compact (120g)
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What to Look For in a Portable Phone Charger

Beyond capacity, these features separate good portable chargers from great ones.

Output Wattage

Look for at least 18–20W USB-C PD output to fast-charge phones. 65W output lets you charge laptops too. Higher wattage = faster charging.

Input Speed

USB-C PD input (18W+) recharges the power bank itself in 2–3 hours instead of 8+ hours with Micro-USB. Always check input speed, not just output.

Airline Compliance

Power banks under 100Wh (≈27,000mAh) are allowed in hand luggage. A 20,000mAh bank is 74Wh — well within limits. Always carry in hand luggage, never checked bags.

Safety Features

Choose power banks with overcurrent, overvoltage, short-circuit, and temperature protection. CE/UKCA certification is essential for UK use.

Battery Indicator

LED indicators show remaining charge. Digital displays (showing exact percentage) are more accurate than 4-LED systems. Essential for knowing when to recharge.

Passthrough Charging

Allows charging the power bank and your phone simultaneously. Useful when you only have one outlet available, like in hotels or airports.

Portable Phone Chargers for Travel

Taking a portable phone charger on a plane? The key rule is simple: power banks must go in hand luggage, never in checked bags. Most airlines allow up to 100Wh without prior approval, which covers every power bank up to approximately 27,000mAh.

For international travel, a 20,000mAh power bank with 65W USB-C PD output is ideal — it'll charge your phone 4–5 times and can even top up a laptop in an emergency. Look for models with both USB-C and USB-A output to cover all your devices.

Pro tip: Charge your power bank fully the night before travel. Some airport security officers may ask you to power on your electronic devices, and a dead power bank could be confiscated.

Portable Charger FAQs

What size portable phone charger do I need?
For daily top-ups, a 5,000mAh power bank (about 1 full phone charge) is sufficient and pocket-sized. For a full day out or commuting, 10,000mAh gives you 2–3 charges. For travel or multi-device use, 20,000mAh provides 4–5 phone charges and can even charge tablets and laptops. Most people find 10,000mAh the best balance of capacity, size, and weight.
Can I take a portable charger on a plane?
Yes, but only in hand luggage — power banks are banned from checked baggage. Most airlines allow power banks up to 100Wh (roughly 27,000mAh at 3.7V) without approval. Banks between 100–160Wh need airline approval. Power banks over 160Wh are banned entirely. A 20,000mAh power bank at 3.7V is 74Wh, well within the limit. Always check your airline's specific policy.
How long does a portable phone charger take to recharge?
Recharge time depends on the power bank's capacity and input speed. A 10,000mAh power bank with 18W USB-C PD input takes about 2.5–3 hours to fully recharge. A 20,000mAh bank takes 4–5 hours at 18W. Older power banks with Micro-USB input (5W) can take 8–10 hours. Always look for USB-C PD input when buying — it dramatically cuts recharge time.
What is passthrough charging on a power bank?
Passthrough charging lets you charge the power bank and your connected phone simultaneously. You plug the power bank into a wall charger while your phone is plugged into the power bank. This is useful when you have limited outlets (e.g., one plug by your hotel bed). Not all power banks support it — check the specs. Note that passthrough can generate extra heat, so use it sparingly.

More Phone Charger Guides

All Phone ChargersPower Bank GuideWireless ChargersSamsung ChargersPower Bank Buying GuideTravel ChargersCharging Speed Calculator

Find Your Perfect Portable Charger

From pocket-sized 5,000mAh to travel-ready 20,000mAh — every power bank ships free across the UK.

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