Skip to contentGo to Product Search
Main Content
Skip to contentGo to Product Search
Main Content
Categories & Filters
Best Buy

/

batteries & power

/

solar panels & batteries

/

solar panels

400w Power Supply

The power supply is a crucial component of any computer. It's the part that converts AC current from the wall outlet into DC current that your computer's components can use. It also has to be able to handle the load from all of those components, especially if you're overclocking, which means you'll want a power supply with a high-quality fan and top-notch electrical components. We're confident our top picks are the best you can buy for your own system.

Read More
Results
Main Results

  1. Cobra - PURE SINE 400 Watt Power Inverter with Fast Charge USB - Black

    SKU: J7XH3ZFX5Q

    Product Description

    A black power inverter delivering 400 watts of pure sine wave power with fast-charge USB for sensitive electronics.
    See all Power Inverters
    Your price for this item is $87.99
    Save $42
    The previous price was $129.99

  2. Sonance - 8-50 AMP - 400W 8.0 Ch. Multi-Channel Amplifier for Home Audio & Multi Room Systems (Each) - Black

    SKU: J78WL7S4TT

    Product Description

    A black multi-channel amplifier delivering 400W of high-fidelity sound for seamless whole-home audio integration.
    See all Power Amplifiers
    Your price for this item is $1,485.00

  3. Anker - SOLIX PS400 Portable Solar Panel 400W - Black

    SKU: JJ8586KW5T

    Purchased 2 Anker SOLIX PS400 Solar Panels (400W) and they perform as advertised. They are also easy to set and connect....The Anker Solix 400W Solar Panel is built like a tank...The Anker Solix 400W...

    Product Description

    A portable, foldable black solar panel delivering 400W of efficient, sustainable energy for outdoor power needs.
    See all Solar Panels
    Your price for this item is $649.99
    Save $50
    The previous price was $699.99

  4. Renogy - 400W Portable Solar Panel Foldable Solar Blanket, for Power Station Outdoor Camping RV Solar Generator - Black

    SKU: J39HF8558L

    Product Description

    A portable black solar panel blanket delivering 400W of rapid, eco-friendly charging for outdoor adventures.
    See all Solar Panels
    Your price for this item is $425.37
1-18 of 176 items
0 items

Best Sellers

Related Pages

Sign in or Create Account

Get the latest deals and more.

Best Buy appLearn more
Share on YouTubeShare on InstagramShare on TikTokShare on FacebookShare on PinterestShare on X
Best Buy Canada
AccessibilityTerms & ConditionsPrivacyInterest-Based AdsState Privacy RightsHealth Data PrivacyDo Not Sell/Share My Personal InformationLimit Use of My Sensitive Personal InformationTargeted Advertising Opt OutCA Supply Chain Transparency Act
In-store pricing may vary. Prices and offers are subject to change. © 2026 Best Buy. All rights reserved. BEST BUY, the BEST BUY logo, the tag design, and MY BEST BUY are trademarks of Best Buy and its affiliated companies.
Sign in or Create Account

Get the latest deals and more.

Best Buy appLearn more
Share on YouTubeShare on InstagramShare on TikTokShare on FacebookShare on PinterestShare on X
Best Buy Canada

In-store pricing may vary. Prices and offers are subject to change. © 2026 Best Buy. All rights reserved. BEST BUY, the BEST BUY logo, the tag design, and MY BEST BUY are trademarks of Best Buy and its affiliated companies.