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White rectangular 45W USB-C power adapter with detachable cord

usbroway

usbroway 45W USB-C AC Adapter for Acer Chromebook

SKU CH-R90W-KZRQX

45W USB-C AC adapter compatible with Acer Chromebook C721, C732, C733, C771, C851, C933, R721T, R751T, R752TN, CB315 and CP311 series

  • Battery typeLithium-Ion
  • 45W output charges compatible Acer Chromebooks quickly
  • USB-C connector fits listed C732, C933, R721T, R751T and CB315 models
  • 100–240V input works on mains worldwide
  • Multi-protection circuit guards against over-voltage, over-current and short-circuits
  • CE, FCC and RoHS certified for safety compliance

45 W USB-C Adapter for Acer Chromebooks

This 45 W USB-C AC adapter replaces the original charger for a wide range of Acer Chromebook models including the C721, C732, C733, C771, C851, C933, R721T, R751T, R752TN, CB315, CP311 and SP714-51 series. It accepts AC 100-240 V input at 1.3 A, making it suitable for worldwide travel use. The new condition guarantees full rated performance from first use.

Sustained output across four voltage steps

The adapter delivers 5 V at 3 A, 9 V at 3 A, 15 V at 3 A and 20 V at 2.25 A, maintaining the full 45 W maximum continuously rather than only in short bursts. Multi-protection circuitry provides over-charge, over-voltage, over-temperature, over-current, short-circuit and lightning protection during extended charging sessions. CE, FCC and ROHS certificates confirm compliance with international safety standards.

USB-C connector with 20 V 2.25 A top step

The single deciding specification is the 20 V / 2.25 A output profile over USB-C, which must match the Chromebook's power requirement exactly. Buyers whose device needs a higher voltage step or a barrel connector cannot use this adapter. No other interface or connector type is supported.

How it compares

Measured against everything we stock in Laptop Chargers & Batteries, at today’s prices. Recalculated every night.

Price $35.99
Pricier than about 64% of the 27,790 comparable items (median $30.99).

Specifications

Power
Battery typeLithium-Ion

Questions about this item

How much heat does the 45W USB-C adapter generate when charging a Chromebook all day?

The adapter is rated for continuous 45W output with over-temperature protection, so it runs within safe thermal limits during extended charging sessions.

Does the USB-C charger require a separate power cord or does it plug directly into the wall?

The unit has an integrated AC plug accepting 100-240V input, so no extra cord is needed — just insert it into any standard outlet.

Will this 45W adapter charge an older Acer Chromebook C721 that originally shipped with a lower-wattage charger?

Yes, the adapter negotiates 5V, 9V, 15V or 20V automatically, so it safely powers the C721 and other listed models without overloading them.

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