Travel adapters & chargers
AnkerPower Bank (20,000 mAh)
$69.99Buy from brand
Two phone charges plus a tablet.
- USB-C in and out.
- Airline-legal under 100Wh.
- Carry it in the cabin, not checked.
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Why it gets packed
On 17 packing lists
- Spain summer trip packing list
1–4 weeks · Required
Train platforms, museum lines, and a late dinner kill a phone. Keep it in the carry-on; it cannot go in checked bags.
- Italy summer trip packing list
1–4 weeks · Required
Trenitalia seats and museum security trays kill a phone. Charge overnight; carry the bank for the day you cannot.
- UK summer trip packing list
1–4 weeks · Required
The Elizabeth line and a delayed LNER do not guarantee a working socket. Carry the bank.
- France summer trip packing list
1–4 weeks · Required
TGV outlets fail more often than the SNCF app admits. The bank covers maps when you miss the connection at Valence.
- Japan long-stay packing list
1–3 months · Required
IC cards, maps, and a translation app drain a phone. Shinkansen seats have outlets; your local line does not.
- South Korea long-stay packing list
1–3 months · Required
T-money, Naver Maps, and a translation app. Cafés have outlets; the transfer at Gangnam does not.
- Australia long-stay packing list
1–3 months · Required
A dead phone after a 14-hour cabin and a delayed connection in LAX. Carry it in the cabin — not in the hold.
- Europe multi-city packing list
10–14 days · Required
Train outlets are a rumor. Two weeks of maps, boarding passes, and rail tickets live on one phone.
- Spain summer packing list
2–8 weeks · Required
Carry-on only: airlines do not allow power banks in checked bags. Maps and arrival instructions on day one, museum lines after that.
- Spain semester packing list
12–16 weeks · Required
Carry-on only: airlines do not allow power banks in checked bags. Maps and arrival instructions on day one, long days between class and a late dinner after that.
- Italy summer packing list
2–8 weeks · Required
Trenitalia seats and museum security trays kill a phone. Charge overnight; carry the bank for the day you cannot.
- UK summer packing list
2–8 weeks · Required
The Elizabeth line and a delayed LNER do not guarantee a working socket. Carry the bank.
- France summer packing list
2–8 weeks · Required
TGV outlets fail more often than the SNCF app admits. The bank covers maps when you miss the correspondence at Valence.
- Japan semester packing list
12–16 weeks · Required
IC cards, maps, and a translation app drain a phone. Train outlets exist on shinkansen; they do not exist on your local.
- South Korea semester packing list
12–16 weeks · Required
T-money, Naver Maps, and a translation app. Cafés have outlets; the transfer at Gangnam does not.
- Australia semester packing list
12–16 weeks · Required
A dead phone after a 14-hour cabin and a delayed connection in LAX or Doha. Carry it in the cabin — not in the hold.
- Europe faculty-led packing list
10–14 days · Required
Coach outlets are a rumor. Fourteen days of maps, a boarding pass, and a group chat that never sleeps.