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Rocstor
Rocstor 90W AC Universal Laptop Charger

Rocstor 90W AC Universal Laptop Charger

Best price now

$19.99at WalmartObserved at 6:49 AM

56% under what the other stores charge

Compared across 6 stores. Prices are checked against each store and labelled with when.

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Our take on the Rocstor 90W AC Universal Laptop Charger

The Rocstor 90W Universal Laptop Charger is a single wall charger meant to replace the original adapter for Dell, HP, Lenovo, Acer and ASUS laptops, including Chromebooks and ultrabooks. It outputs 19 V DC at up to 90W from a 100-240 VAC input, so it works on US and overseas outlets with a plug adapter, and it ships with a DC output cable and power cord. At 529 g and about 1.26 inches thick, it is bulkier than most slim OEM bricks but still packable. Its best new price is $19.99 at Walmart as of November 4, 2026, the low end of what the six stores listing it charge.

Best forOwners of 90W Dell, HP, Lenovo, Acer or ASUS laptops who lost or broke the origiTravelers who want one charger for several laptopsChromebook and ultrabook users needing a spare for home or officeBuyers who want a cheap certified replacement rather than an OEM brick
Pros
  • Up to 90W at 19 V DC covers most mainstream 90W laptops
  • Universal tip set fits Dell, HP, Lenovo, Acer and ASUS
  • 100-240 VAC input works abroad with a plug adapter
  • Carries CE/FCC, ETL, TUVGS, RCM/PSE and SAA certifications
  • Includes both the DC output cable and the power cord
  • Cheap at $19.99 at Walmart as of November 4, 2026
Cons
  • At 529 g it is heavier than many original 90W adapters
  • 19 V fixed output will not suit laptops that need other voltages
  • Universal tip sets can fit loosely and wear over time
  • No USB-C Power Delivery for modern laptops
  • Not a match for 45W, 65W or 130W+ machines outside its range

Rocstor 90W AC Universal Laptop Charger prices at every store

  • WalmartNew

    In stockSold by Hannon Enterprises LLC

    $19.99Observed at 6:49 AM
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  • eBayPre-owned

    In stockSold by cacsalesllc

    $29.70Observed at 6:49 AM
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  • eBayNew

    In stockSold by total_parts

    $29.95Observed at 6:49 AM
    Visit store
  • RocstorNew

    In stock

    $45.95Observed at 6:49 AM
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  • Altex ElectronicsNew

    In stock

    $45.95Observed at 6:49 AM
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  • Fireowls CorporationNew

    In stock

    $54.09Observed at 6:49 AM
    Visit store
  • bhphotovideo.comNew

    Out of stock

    $45.95Observed at 6:49 AM
    Visit store

Also available at

  • eBayCheck price at eBay
  • BlueDogInkCheck price at BlueDogInk
  • itdevicesonline.comCheck price at itdevicesonline.com

Rocstor 90W AC Universal Laptop Charger price history

Lowest price we've seen: $19.99 on Nov 4 at Walmart. Tracked across 8 stores since Nov 4.

What reviewers say

Reception of Rocstor's universal chargers is mixed. Buyers like the low price and the broad tip compatibility, but some report loose-fitting tips and shorter life than an OEM adapter.

Pros
  • Works as a cheap replacement for a lost OEM charger
  • Tip set covers several laptop brands
  • Certified and runs cool in normal use
Cons
  • Tips can fit loosely or stop making contact
  • Bulkier and heavier than the original adapter
  • Some units fail within months

Specifications

Maximum Output
90W
Output Voltage
19 V DC
Power Source Type
AC, Wall outlet
Input Voltage
100-240 VAC
Compatible Brand
Dell, HP, Lenovo, Acer, ASUS
Compatible Device Type
Chromebooks, Ultrabooks, laptops
Universal Compatibility
Yes
Compatible Devices
90W laptops
Cable Included
Yes
Cable Type
DC output cable
Power Cord Included
Yes
Dimensions
Slim, 1.26″ (32mm) (depth), 2.02″ (51.5mm) (height), 5″ (127.5mm) (width)
Weight
18.7oz – 529gr
Design Highlights
Portable Design - Easy to carry
Environmental Certification
CE/FCC, ETL, RCM PSE Certified, SAA, TUVGS
People Audience Theme
ADULT

Questions and answers

Is the Rocstor 90W charger worth it over an OEM adapter?
At $19.99 at Walmart as of November 4, 2026, it costs far less than most brand-name 90W adapters. It is a reasonable spare or travel charger, but an OEM unit fits better and tends to last longer.
Which laptops does it fit?
It is built for 90W laptops from Dell, HP, Lenovo, Acer and ASUS, including Chromebooks and ultrabooks that take 19 V DC. Check your laptop's wattage and connector before buying; it will not properly charge 45W, 65W or 130W+ models.
Does it work overseas?
Yes. The input accepts 100-240 VAC, so it works on 220-240 V outlets with the right plug adapter. The included power cord is for the country of sale.
What comes in the box?
You get the charger brick, a DC output cable with interchangeable tips and a power cord. Check that the tip for your laptop is included before you travel.
Can it charge a USB-C laptop?
No. It delivers 19 V DC through barrel-style tips, not USB-C Power Delivery, so USB-C-only laptops such as most recent MacBooks will not charge from it.
When is it cheapest?
Its best new price was $19.99 at Walmart as of November 4, 2026, across six stores listing it. Universal chargers like this usually drop around back-to-school and holiday sales.
Where is the Rocstor 90W AC Universal Laptop Charger cheapest?
At Walmart, for $19.99, 56% under what the other stores charge, as of our latest check.
Where can I buy the Rocstor 90W AC Universal Laptop Charger?
8 stores we checked sell it, including eBay, Rocstor, Altex Electronics, bhphotovideo.com, Fireowls Corporation.