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power cases

Best Buy customers often prefer the following products when searching for power cases.

Power cases provide extra power to your phone when you're in a pinch and are a must-have accessory. Browse the top-ranked list of power cases below along with associated reviews and opinions.

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  1. Insignia™ - 6’ AC Power Cable - Black - Front_Zoom

    New!

    Model: NS-PC2P6B23
    SKU: 6517224
    Top comment

    "Worked perfectly as an extra traveling power source for my monitor....Needed it to give power to a Dell monitor. Great cable...Great Basic Power Cable"

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    Product Description

    A missing or damaged power cord shouldn’t keep you from enjoying your electronics. The Insignia NS-PC2P6B23 6’ AC Power Cable works with most computers, monitors and printers, replacing your lost or damaged power cord. Simply confirm the shape of the power port of your device to ensure compatibility and power away. The 6 ft. cord grants you flexible placement options while its black color blends in with your other cables and electronics, offering a discreet look. Plus, this cable is made with corrosion resistant materials, letting you power your electronics for years to come.
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    Top comment

    "Worked perfectly as an extra traveling power source for my monitor....Needed it to give power to a Dell monitor. Great cable...Great Basic Power Cable"

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    Product Description

    A missing or damaged power cord shouldn’t keep you from enjoying your electronics. The Insignia NS-PC2P6B23 6’ AC Power Cable works with most computers, monitors and printers, replacing your lost or damaged power cord. Simply confirm the shape of the power port of your device to ensure compatibility and power away. The 6 ft. cord grants you flexible placement options while its black color blends in with your other cables and electronics, offering a discreet look. Plus, this cable is made with corrosion resistant materials, letting you power your electronics for years to come.
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    Your price for this item is $14.99
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  2. EVGA - 750 BP, 80+ BRONZE 750W, 100-BP-0750-K1, Power supply - Front_Zoom
    Top comment

    "Power Supply...The power supply works very well since I installed it into my computer. ...Perfect Replacement Power Supply!...Nice piece of equipment to replace the failed power supply in my desktop! Simple installation - works perfectly!!"

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    Product Description

    Precision is power, as the EVGA BP power supplies add another affordable option to EVGA's 80PLUS Bronze-certified lineup, while reducing the overall length to 120mm - EVGA's shortest ATX power supply to-date! The BP power supplies feature a 115mm hydraulic bearing fan to ensure that staying cool and quiet is no tall order. Combining a full suite of protections and EVGA's 3 Year Limited Warranty, this power supply should be on the short list for your next system build.
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    Top comment

    "Power Supply...The power supply works very well since I installed it into my computer. ...Perfect Replacement Power Supply!...Nice piece of equipment to replace the failed power supply in my desktop! Simple installation - works perfectly!!"

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    Product Description

    Precision is power, as the EVGA BP power supplies add another affordable option to EVGA's 80PLUS Bronze-certified lineup, while reducing the overall length to 120mm - EVGA's shortest ATX power supply to-date! The BP power supplies feature a 115mm hydraulic bearing fan to ensure that staying cool and quiet is no tall order. Combining a full suite of protections and EVGA's 3 Year Limited Warranty, this power supply should be on the short list for your next system build.
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    Your price for this item is $89.99
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  3. EVGA - 650 BP, 80+ BRONZE 650W, 100-BP-0650-K1, Power supply - Front_Zoom
    Top comment

    "The best power...Easy to install and it work perfectly with my pc case...It's a PSU that is reliable, quiet and cheap relative to what's out there. It powers 11th gen Intel CPU and RTX 3080 just fine."

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    Product Description

    Precision is power, as the EVGA BP power supplies add another affordable option to EVGA's 80PLUS Bronze-certified lineup, while reducing the overall length to 120mm - EVGA's shortest ATX power supply to-date! The BP power supplies feature a 115mm hydraulic bearing fan to ensure that staying cool and quiet is no tall order. Combining a full suite of protections and EVGA's 3 Year Limited Warranty, this power supply should be on the short list for your next system build.
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    Top comment

    "The best power...Easy to install and it work perfectly with my pc case...It's a PSU that is reliable, quiet and cheap relative to what's out there. It powers 11th gen Intel CPU and RTX 3080 just fine."

    See all customer reviews

    Product Description

    Precision is power, as the EVGA BP power supplies add another affordable option to EVGA's 80PLUS Bronze-certified lineup, while reducing the overall length to 120mm - EVGA's shortest ATX power supply to-date! The BP power supplies feature a 115mm hydraulic bearing fan to ensure that staying cool and quiet is no tall order. Combining a full suite of protections and EVGA's 3 Year Limited Warranty, this power supply should be on the short list for your next system build.
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    Your price for this item is $74.99
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  4. CORSAIR - HXi Series HX1500i 80 PLUS Platinum Fully Modular Ultra-Low Noise ATX Power Supply - Black - Front_Zoom
    Top comment

    "Corsair 1500 watt power supply...Very powerful no problem with not having enough power...Stable power...Perfect upgrade for my 4090! Stable power for my power hungry rig."

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    Product Description

    CORSAIR HXi Series Fully Modular Ultra-Low Noise Power Supplies deliver exceptional 80 PLUS Platinum efficient power and low-noise fluid dynamic bearing fan performance. With three EPS12V connectors, HXi PSUs have every connection needed to power today’s most demanding PC upgrades. Powerful CORSAIR iCUE software enables custom fan curves, monitoring and adjusting power settings, and more thanks to a fully digital platform. Japanese 105°C-rated electrolytic capacitors deliver long life and reliability, backed by a ten-year warranty. Wake your computer faster and consume less power with Modern Standby sleep mode. Zero RPM mode ensures near-silent operation at low and medium loads. The HXi Series puts platinum power at your command.
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    Top comment

    "Corsair 1500 watt power supply...Very powerful no problem with not having enough power...Stable power...Perfect upgrade for my 4090! Stable power for my power hungry rig."

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    Product Description

    CORSAIR HXi Series Fully Modular Ultra-Low Noise Power Supplies deliver exceptional 80 PLUS Platinum efficient power and low-noise fluid dynamic bearing fan performance. With three EPS12V connectors, HXi PSUs have every connection needed to power today’s most demanding PC upgrades. Powerful CORSAIR iCUE software enables custom fan curves, monitoring and adjusting power settings, and more thanks to a fully digital platform. Japanese 105°C-rated electrolytic capacitors deliver long life and reliability, backed by a ten-year warranty. Wake your computer faster and consume less power with Modern Standby sleep mode. Zero RPM mode ensures near-silent operation at low and medium loads. The HXi Series puts platinum power at your command.
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    Your price for this item is $374.99
    The previous price was $399.99
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  5. NZXT - C-850 ATX Gaming Power Supply - Black - Front_Zoom

    Model: PA-8G1BB-US
    SKU: 6520668
    Top comment

    "It helps having less cables cluttering the case especially with the design of my new case. This PSU puts out plenty of power and I haven’t had any noise complaints with it so far!...excellent power supply for the cost, works and fits great ing the h11 case from NZXT"

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    Product Description

    C Series Gold ATX power supply from NZXT features safe, reliable power while ensuring optimal efficiency and quieter performance.
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    Top comment

    "It helps having less cables cluttering the case especially with the design of my new case. This PSU puts out plenty of power and I haven’t had any noise complaints with it so far!...excellent power supply for the cost, works and fits great ing the h11 case from NZXT"

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    Product Description

    C Series Gold ATX power supply from NZXT features safe, reliable power while ensuring optimal efficiency and quieter performance.
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    Your price for this item is $139.99
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  6. CORSAIR - RMe Series RM750e 80 PLUS Gold Fully Modular Low-Noise ATX Power Supply - Black - Front_Zoom
    Top comment

    "Works great and powers my pc well. No issues and great value...Powers up my 1080 unlike my 430w supply! There's an audible relay click when it starts up. "

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    Product Description

    CORSAIR RMe Series Fully Modular Low-Noise Power Supplies provide quiet, reliable power with 80 PLUS Gold efficiency to your PC. With dual 8-pin EPS12V cables and an array of PCIe 8-pin power connectors, RMe PSUs have the connections needed to power today’s demanding PC hardware. Industrial-grade, 105°C-rated capacitors deliver superb electrical performance, backed by a seven-year warranty. Wake your computer faster and consume less power with support for the new Modern Standby sleep mode. Fully modular cables make PC builds easy, as you connect only the cables your system requires. With a 140mm-long casing that works with nearly any modern case, the CORSAIR RMe Series is steady power for your system.
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    Top comment

    "Works great and powers my pc well. No issues and great value...Powers up my 1080 unlike my 430w supply! There's an audible relay click when it starts up. "

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    Product Description

    CORSAIR RMe Series Fully Modular Low-Noise Power Supplies provide quiet, reliable power with 80 PLUS Gold efficiency to your PC. With dual 8-pin EPS12V cables and an array of PCIe 8-pin power connectors, RMe PSUs have the connections needed to power today’s demanding PC hardware. Industrial-grade, 105°C-rated capacitors deliver superb electrical performance, backed by a seven-year warranty. Wake your computer faster and consume less power with support for the new Modern Standby sleep mode. Fully modular cables make PC builds easy, as you connect only the cables your system requires. With a 140mm-long casing that works with nearly any modern case, the CORSAIR RMe Series is steady power for your system.
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    Your price for this item is $99.99
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  7. MSI - MPG A850G PCIE 5 850 Watt ATX 80 Plus Gold PSU Power Supply - Black - Front_Zoom
    Top comment

    "Great power supply...Excellent power supply for the rtx 4090 cards works very well and silent 100% recommended...I wanted a new power supply so i didnt have to use the 40 series gpu dongle and this works nicely"

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    Product Description

    The MPG gaming power supply is equipped to support the latest NVIDIA GeForce RTX 4000 Series and AMD GPUs. The efficiency of your power supply can make a world of a difference; it's why we offer a reliable 80+ Gold power proficiency PSU and a 10-year limited warranty guaranteeing a long term reliable solution for your gaming system. Organizing cables is often the most bothersome part of building a PC. With the MPG gaming power supply's fully modular design, we've given you the option of what cables you'll need for your system and defeat the clutter. With that in mind we've gone with a flat black design to further help you create the most beautiful cable managed pc system around. The remaining cables can be nicely stored away in the included cable bag. The MPG gaming power supply comes in 160mm and 150mm wide dimensions to ensure a comfortable fit in more pc chassis so it can continue to maintain a comfortable space for your cable management needs.
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    Top comment

    "Great power supply...Excellent power supply for the rtx 4090 cards works very well and silent 100% recommended...I wanted a new power supply so i didnt have to use the 40 series gpu dongle and this works nicely"

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    Product Description

    The MPG gaming power supply is equipped to support the latest NVIDIA GeForce RTX 4000 Series and AMD GPUs. The efficiency of your power supply can make a world of a difference; it's why we offer a reliable 80+ Gold power proficiency PSU and a 10-year limited warranty guaranteeing a long term reliable solution for your gaming system. Organizing cables is often the most bothersome part of building a PC. With the MPG gaming power supply's fully modular design, we've given you the option of what cables you'll need for your system and defeat the clutter. With that in mind we've gone with a flat black design to further help you create the most beautiful cable managed pc system around. The remaining cables can be nicely stored away in the included cable bag. The MPG gaming power supply comes in 160mm and 150mm wide dimensions to ensure a comfortable fit in more pc chassis so it can continue to maintain a comfortable space for your cable management needs.
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    Your price for this item is $144.99
    The previous price was $159.99
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  8. EVGA SuperNOVA 1000 GT Fully Modular Power Supply - Front_Zoom

    Model: 220-GT-1000-X1
    SKU: 6528734
    Top comment

    "Does not work with AMD high power cable...This was a overall great power supply just didn't work with Corsair high power cable other than that supplies enough power to high-end graphics cards...It powers on...The braided cables are high quality. The power supply is supplying power"

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    Product Description

    Introducing the EVGA SuperNOVA GT Series of power supplies - the newest addition to the outstanding line of EVGA Power Supplies. Featuring 80 Plus Gold certification, 100% Japanese capacitors, a fluid dynamic bearing fan, and a fully modular design, this power supply is built for long-term usage and durability. Building upon EVGA's line of 80 Plus Gold rated power supplies, the EVGA GT Series combines all these features at a great price.
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    Top comment

    "Does not work with AMD high power cable...This was a overall great power supply just didn't work with Corsair high power cable other than that supplies enough power to high-end graphics cards...It powers on...The braided cables are high quality. The power supply is supplying power"

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    Product Description

    Introducing the EVGA SuperNOVA GT Series of power supplies - the newest addition to the outstanding line of EVGA Power Supplies. Featuring 80 Plus Gold certification, 100% Japanese capacitors, a fluid dynamic bearing fan, and a fully modular design, this power supply is built for long-term usage and durability. Building upon EVGA's line of 80 Plus Gold rated power supplies, the EVGA GT Series combines all these features at a great price.
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    Your price for this item is $169.99
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  9. Car and Driver - Smart Assist Power Station - Black - Front_Zoom

    Product Description

    Stream your favorite music and make calls through your vehicle's stereo with the smart-assist power station. You can charge up to four different devices at the same time by using the two 12V ports, one universal QuickCharge 3.0 USB port, and one 30W Power Delivery USB-C port. Works with Siri, Google & Alexa. The rewind, skip, play/pause, call buttons allow easy media control without taking your eyes off the road.
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    Product Description

    Stream your favorite music and make calls through your vehicle's stereo with the smart-assist power station. You can charge up to four different devices at the same time by using the two 12V ports, one universal QuickCharge 3.0 USB port, and one 30W Power Delivery USB-C port. Works with Siri, Google & Alexa. The rewind, skip, play/pause, call buttons allow easy media control without taking your eyes off the road.
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    Your price for this item is $49.99
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  10. Energizer - Ultimate Lithium 20,000mAh 20W Qi Wireless Portable Charger/Power Bank QC 3.0 & PD 3.0 for Apple, Android, USB Devices - Black - Front_Zoom
    Top comment

    "good power bank for price...Nice power bank. Wireless works well. Got a discount with bestbuy rewards....Power Back Up...Ideal for quick power back up. I would consider getting the 30,000 mAh also."

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    Product Description

    Charge your mobile devices with this Energizer power bank. This portable charger is a wireless Qi certified power bank that provides 20,000mAh capacity to charge smartphones, tablets, smartwatches, headphones, ear buds, and more. The Qi wireless fast charge supports up to 7.5W for Apple, and 10W output for Samsung, Google Pixel, and other compatible devices. The 20,000mAh battery provides up to 72 hours of power while the three outputs and 18W QC 3.0, Qi, and 20W PD 3.0 technology deliver power consistently and efficiently to up to three devices at once. This power bank includes one 18W Qualcomm Quick Charge 3.0 USB-A and one 20W Power Delivery 3.0 USB-C. The USB-C Power Delivery 3.0 technology allows you to fast charge certain iPhones from 0 to 50% in only 30 minutes with 20W of power. The Qualcomm Quick Charge 3.0 USB-A output supports fast charging for Samsung, Huawei, and other compatible Android devices allowing you to charge your compatible phone from 0-80% in only 30 minutes with 18W of power. Four white LED indicator lights signify the charging status and current battery life. The lightweight and ultra slim design fits perfectly in your pocket wherever you go! Energizer PowerSafe Management guarantees against short circuit, overcurrent, overcharge and overdischarge for your power bank and devices. A USB-C Cable is included for recharging the power bank or charging other devices.
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    Top comment

    "good power bank for price...Nice power bank. Wireless works well. Got a discount with bestbuy rewards....Power Back Up...Ideal for quick power back up. I would consider getting the 30,000 mAh also."

    See all customer reviews

    Product Description

    Charge your mobile devices with this Energizer power bank. This portable charger is a wireless Qi certified power bank that provides 20,000mAh capacity to charge smartphones, tablets, smartwatches, headphones, ear buds, and more. The Qi wireless fast charge supports up to 7.5W for Apple, and 10W output for Samsung, Google Pixel, and other compatible devices. The 20,000mAh battery provides up to 72 hours of power while the three outputs and 18W QC 3.0, Qi, and 20W PD 3.0 technology deliver power consistently and efficiently to up to three devices at once. This power bank includes one 18W Qualcomm Quick Charge 3.0 USB-A and one 20W Power Delivery 3.0 USB-C. The USB-C Power Delivery 3.0 technology allows you to fast charge certain iPhones from 0 to 50% in only 30 minutes with 20W of power. The Qualcomm Quick Charge 3.0 USB-A output supports fast charging for Samsung, Huawei, and other compatible Android devices allowing you to charge your compatible phone from 0-80% in only 30 minutes with 18W of power. Four white LED indicator lights signify the charging status and current battery life. The lightweight and ultra slim design fits perfectly in your pocket wherever you go! Energizer PowerSafe Management guarantees against short circuit, overcurrent, overcharge and overdischarge for your power bank and devices. A USB-C Cable is included for recharging the power bank or charging other devices.
    See all Portable Chargers & Power Packs
    Your price for this item is $69.99
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