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Buying guide

Best Power Banks for Travel

A power bank keeps your phone — your tickets, maps and payments — alive on long travel days. The key numbers are capacity, output (watts) and whether it is allowed on your flight.

What to look for

Capacity for your use
10,000 mAh charges most phones about twice; 20,000 mAh suits long trips, two devices or treks with little electricity.
Watt-hour (Wh) rating printed on it
Airlines judge power banks by Wh. Under 100 Wh is generally allowed in cabin baggage; 100–160 Wh usually needs airline approval. A 20,000 mAh bank at 3.7 V is about 74 Wh.
USB-C Power Delivery
USB-C PD (18–20 W or more) charges modern phones quickly and can recharge the power bank itself faster.
Certification and build
Buy from brands that publish safety certifications. Avoid unbranded cells with inflated capacity claims.

Recommended options

Picked to match the buying advice above. Check each listing’s size, specs and current price before you buy.

boAt EnergyShroom PB401 20000mAh 22.5W Power Bank

Best for long trips

boAt EnergyShroom PB401 20000mAh 22.5W Power Bank

Power Banks

Good for
Long trips, Treks
Energy (approx.)
74 Wh

Size, specs and price can change — check the listing before you buy.

Check price on Amazon.in (opens in a new tab)

Comparison

Best Power Banks for Travel compared
OptionRoleBudgetWeightBest for
Xiaomi Power Bank 4i 10000mAh 22.5WBest overall, Best budget, Best compact optionSee listing—Flights, City trips, Daily carry
boAt EnergyShroom PB401 20000mAh 22.5W Power BankBest for long tripsSee listing—Long trips, Treks, Families
boAt EnergyShroom PB665 Turbo X 30000mAh Laptop Power Bank—See listing—Laptop users, Long road trips, Remote work

Also worth considering

boAt EnergyShroom PB665 Turbo X 30000mAh Laptop Power Bank

boAt EnergyShroom PB665 Turbo X 30000mAh Laptop Power Bank

Power Banks

Good for
Laptop users, Long road trips
Energy (approx.)
111 Wh

Over 100 Wh: not allowed in checked bags, and it needs airline approval to carry in the cabin.

Size, specs and price can change — check the listing before you buy.

Check price on Amazon.in (opens in a new tab)

Best for different trips

  • Best overallXiaomi Power Bank 4i 10000mAh 22.5W — flights, city trips, daily carry
  • Best for long tripsboAt EnergyShroom PB401 20000mAh 22.5W Power Bank — long trips, treks, families

Buying considerations

  • Power banks are not allowed in checked baggage on flights. Keep them in your cabin bag.
  • Some airlines restrict using or charging power banks during the flight. Check your airline’s current rules.
  • Higher capacity means more weight; 20,000 mAh banks often weigh 350–450 g.

Related guides

Frequently asked questions

Can I carry a 20,000 mAh power bank on a flight in India?

Generally yes, in cabin baggage only, because a typical 20,000 mAh bank is about 74 Wh — under the common 100 Wh limit. Check the Wh rating printed on it and your airline’s current rules.

How do I convert mAh to Wh?

Multiply mAh by the cell voltage (usually 3.7 V) and divide by 1,000. For example, 10,000 mAh × 3.7 V ÷ 1,000 = 37 Wh.