Can you charge a Steam Deck LCD with a Steam Deck 45W?

Worked out from the manufacturers’ specifications. Have a different charger? Pick it below the answer.

Answer
Yes, full speed

The Steam Deck 45W meets the Steam Deck LCD’s top charging speed of about 45 W.

Power delivered45 W of 45 W max
0 Wfast: 45 W
0 → 50%
~31 min
0 → 100%
~1 h 45 min

Estimated from the official battery capacity and the power this pair agrees on, with the device idle.

Try another charger

How long to 50% with each charger

Shorter bar is faster. The highlighted row is the charger on this page.

Steam Deck LCD charging specs

Fast charging needs
45 W
Max input (approx.)
45 W
In the box
45W
Battery
40 Wh
Steam Deck 45W
45 W · USB-C

Sources: Steam Deck LCD tech specs · Steam Deck tech specs. Checked 2026-10-17.

Quick answers

Is it safe to charge the Steam Deck LCD with the Steam Deck 45W?

Yes. USB Power Delivery negotiates power, so the Steam Deck LCD only takes what it can handle and the charger only gives what it can supply. A weaker charger is slower, not dangerous.

How many watts does the Steam Deck LCD need for fast charging?

45 W or more. Ships with a 45W USB-C PD power supply.

How long does the Steam Deck LCD take to charge with the Steam Deck 45W?

About 31 min to 50% and 1 h 45 min to full, estimated with the device idle.