Choosing the best universal laptop power adapter is not easy because there are hundreds of products on the market. There are three main factors to consider: cost, portability, and compatibility.

If you don’t want to spend too much on an original model, you can find something at a lower price with a universal power supply, compatible with your laptop. Look for compatibility lists in the descriptions of notebook power supplies found on various sites.

Portable power supplies have different output voltages, and a laptop that uses the wrong power supply can be damaged. In order not to make mistakes, look at the back of the computer, where the Voltage and Ampere are shown. Here we will be listing the top 11 best portable power supplies.

RANK NO. 1
DenGaWa Portable Power Station 250Wh, Laptop Charger Lithium Battery Power Supply with 110V/250W Pure Sine Wave AC Output, DC USB Ports for Outdoors Camping Home Emergency
  • PORTABLE POWER STATION: DENGAWA R200 portable power pack has a huge capacity of 250 watt-hour (67,500mAh, 3.7V), It can easily meet all electrical needs of your devices which less than 250W. It will fully charge laptops > 3 times, cellphones > 15 times, CPAP machine > 2 nights(by using DC converter), mini refrigerator > 3 hours.
  • IDEAL BACKUP POWER FOR OUTDOOR CAMPING TRAVEL: Very portable size like a small handbag, easy to carry wherever you go. Portable power supply R200 features plenty of ports for most kinds of appliances. 2* PURE SINE WAVE AC output ports(110V 250W), 1* DC output port(12V/10A max), 3* USB output ports(5V/3A total), 1* USB QC 3.0(5V/3A, 9V/2A).
  • BECOME SOLAR GENERATOR WITH SOLAR PANELS(REQUIRES 12V-23V OUTPUT, BUY SEPARATELY): The fuel or gas generator will run out, but the sun light is unlimited. Get the power any where, fully charged by solar panels in 7 hours with full sun light, keep your outdoors always pumped!
  • PURE SINE WAVE AC OUTPUT: Better than modified sine wave, the pure sine wave power will protect your sensitive devices, to have a better working performance. DENGAWA is a factory with more than 10 years specializing in lithium-ion battery products, you are buying from the experienced factory directly, buy with confidence. We do not recommend that our customers let the product output power while charging the product, because this will greatly reduce the number of product use cycles.
  • PACKAGE INCLUDES & CUSTOMER SERVICE: You will receive 1*DENGAWA R200 portable power station, 1*AC power adapter, 1* DC5521 male to car 12V port female, 1* user manual. We offer 7*24 rapid customer service, 30 days money back guarantee, 24 months warranty, life time technical support.
RANK NO. 2
Pinty Portable Uninterrupted Power Supply 500W, Rechargeable Generator Power Source with AC Inverter, USB, DC 12V Outputs for Outdoors and Indoors, UPS Battery Backup
  • PORTABLE & CURVED HANDLE: Measured at 10.9” x 4.3” x 5.4” and weighing merely 8.6 lb. this uninterrupted power supply is easy to carry around; integrated handle with curved design reduces hand fatigue, perfect for both outdoor and indoor use.
  • VERSATILITY: 500W UPS, 2 AC outlets, 4 USB charging ports up to 6.2A, 4 12V DC power ports up to 10A, 12V 26Ah / 288WH lithium rechargeable battery, providing strong power for desktop computers, scooter, wireless networks, gaming consoles and camping power supply.
  • 3 INPUT CHARGING WAY: AC input, car cigarette input charging cable, solar input charging port(Not included),do not worry about the energy.
  • 5 PROTECTIONS: Designed with revolutionary safety technologies, this item provides overcurrent protection, over-discharge protection, overvoltage & under-voltage protection, overpower protection and overcharge protection, defending your safety with superb quality.
  • BACKUP POWER SUPPLY: Supplies battery backup power during outages and unsafe voltage fluctuations, as well as protection from damaging surges and spikes.
RANK NO. 3
Powkey 200Watt Portable Power Bank with AC Outlet for Camping 42000mAh Power Supply for CPAP ,2 AC Ports, 4 USB Ports, 2 DC Port
  • PORTABLE AND MUTIL-FUNCTIONAL : 2 x 120V AC power socket(pure sine wave,total max 200W) / 4 x USB port / 1 Emergency capable of powering lamps,phones,laptops,TVs,printers,fans,car pumps,toast maker,coffee machine and even mini fridges
  • FAST CHARGING 15V/2A DC INPUT :Recharge the power bank faster than ever with the 15V/2A DC input, only need 6-7 hours to get fully recharged and conveniently monitor the battery level via the 4 built-in LED indicators
  • PURE SINE WAVE: Better than modified sine wave, cleaner current in your hands; it prevents crashes in computers, reduces noises in fans, TV and other devices and it is compatible with more equipment
  • HIGH CAPACITY WITH SUPER SMALL SIZE: 42000mAh(146Wh) Grade A lithium polymer battery,with only 3.3 lbs net weight(4.2 lbs gross weight which including all the accessories) and size of 7.87x1.81x5.71in. Ideal power supply for camping or emergency backup
  • TOP QUALITY : Contains the highest quality available lithium-ion battery cells.CE FCC ROHS UL MSDS UN38.3, and factory ISO9001 approved. OCP/OVP/Short Circuit Protection/ Auto Power Off Protection. 100 percent Quality Control. .Provide 24h customer service
RANK NO. 4
Westinghouse iGen160s Portable Power Station and Outdoor Solar Generator, 150 Peak Watts & 100 Rated Watts, 155Wh Lithium-ion Battery (Solar Panel Not Included)
  • 100 Rated Watts and 150 Peak Watts – Small but Rugged Portable Power Station Ideal for Outdoor or Home Use; Upgrade From Traditional 5000 mAh Power Banks; Powered by Lithium-Ion Batteries Easily Charged With Included Wall Charger, Car Charger, or Optional Solar Panel (with DC13V-25V/2A Max Port)
  • Versatile and Efficient – Two 120V Household Outlets, 12V 5. 5mm DC Outputs, Two USB Ports, QualComm Quick Charge 3. 0 Port, and a USB-C Outlet Makes This Perfect for Charging Small Sensitive Electronic Devices From Laptops, Tablets, and Smartphones to GoPros, Drones, Cameras, Lights, Speakers, or Headlamps
  • Adventure Ready – Lightweight Portability at 3. 75 Lb. With a Built-In Carrying Handle and LCD Display With Flashlight and Reading Lamp; Ultra Compact and Easily Tucks Into Bag or Vehicle Storage Compartment
  • Worry-Free Dependability– Specially Designed With No Engine Which Means No Maintenance, No Fuel, and No Noise for Completely Silent Operation; Avoids Obnoxious Fumes With Gas-Free Use; Short Circuit Protection, Overload Protection With Overheat Protection for Battery and Connected Devices
RANK NO. 5
88Wh Portable Power Station, 24000mAh Camping Solar Generators Lithium Battery Power Supply with 110V/80W(Peak 120W) AC Outlet, USB QC3.0, LED Flashlights for CPAP Home Camping Emergency Backup
  • ♔【Portable & Compact】: Super slim size (6.5 x 4.1 x 3.1 inches) and lightweight (2.3lbs). The portable power station with a compact handle design is not only for emergency backup power at home, but also for camping or wherever you need power when you are on the go.
  • ♔【Portable & Compact】: Super slim size (6.5 x 4.1 x 3.1 inches) and lightweight (2.3lbs). The portable power station with a compact handle design is not only for emergency backup power at home, but also for camping or wherever you need power when you are on the go.
  • ♔【Emergency light】: This unit is built with 3 level brightness LED flashlight, which could give off 2 lighting modes (steady light and flashing light) to meet your different needs. Press the LED flashlight switch to change the brightness and SOS mode. When you go out camping or experience power outages, this power supply can help you.
  • ♔【Two Recharge Modes】: 88Wh portable rechargeable power station with two methods to charge the portable power station. On the wall, you can recharge in full the power supply by AC outlet(Adapter included) with 5hrs. Or it can be recharged under sun with a solar panel(15V~24V/1.2A)(not included).
  • ♔【Completely safe】: Battery Management System (BMS) enables voltage control, temperature control and more advanced safety operations. Designed with the cooling vents on its back to help this portable power supply stay constant temperature, its internal electrical elements won't be damaged by high temperature. When it comes to short circuit or overpower, it will automatically shut off the power to protect itself and the powered devices.
RANK NO. 6
300W Portable Power Station, OMORC Pure Sine Wave Camping Generator, 60000mAh Portable Power Supply with 45W PD/QC3.0/2(350W MAX )AC/2 DC/2 USB Outputs, Solar Lithium Emergency Backup Power for CPAP
  • ⚡【UPGRADED 300W AC & 45W PD TYPE C】OMORC 300 solar generator has upgraded the AC output to 300W , 350W max and 4 USB ports (QC 3.0 for 2X faster than normal charging and PD 45W type C for 3X faster than normal charging) 2 DC port (10A / 112V). Perfect back-up power station for home/ travel/ camping, charging up your iPhone, fans, TV, car vacuum,mini air conditioner and CPAP machine (*Use DC-DC converter from your CPAP would last 3 nights)
  • ⚡【60000mAh Large Capacity with 8-in-1 Outputs】OMORC 300 power generator boasts 8 outputs modes: one 45W PD type-c port, one QC 3.0 USB port, two USB ports,which can fully charged recharge iphone for 20+ times and led lights 85+ hours. Charing iPhone XS Max up to 50% in less than 30 minutes. 300W AC ports/60hz pure wave sine which charge laptops 5-7 times, 32" TVs 2-3 hours. 2 DC port can be used for Air Pump(30W for 9 Hours), car refrigerator(40W for 7+Hours), car air fan and car charger etc.
  • ⚡【Smart & Clear Display】OMORC 300 backup battery is considerately designed with an intelligent LCD display, which can accurately identify the output voltage of the charged device and automatically calculate the available duration. We do not need to calculate complex power formulas to easily get the remaining power and usage time.Ultra-helpful for more reasonably managing your device charging
  • ⚡【Compact & Sturdy】The black case is metal and the orange ends are plastic, more durable than other solar generators. With an easy-carry handle, OMORC 300 power station is t just 5lbs,so you can effortlessly carry it for outdoor camping, power outages.Flashlight with SOS light design provides convenience for your outdoor emergency. The battery pack can be recharged from the sun with a solar panel (NOT INCLUDED)
  • ⚡【Completely safe】2 pure sine wave AC outlets ensure a safer charge for your sensitive devices, better than modified sine wave and clean power like utility supplied electricity. Battery Management System (BMS) enables voltage control, temperature control and built-in multiple safe-charging design provides short circuit protection, over current protection, over power protection, low voltage protection and over temperature protection.
RANK NO. 7
146Wh 42000mAh Portable Power Station, Quiet Rechargeable Generator Power Supply with Dual 110v AC Outlet,2 DC Ports, QC 3.0 USB Ports, Battery Backup for Camping Home Emergency Use
  • ✅ Portable Battery backup: Featuring 42000mAh 146Wh capacity with AC, DC, QC 3.0 USB ports, you could get a power source to charge your laptop, smart phone, CPAP machine, drone, Gopro, Mini-refrigerator or other device while you are on a road trip, camping, fishing or other power outgage occasions.
  • ✅ Quick charge: support QC3.0 USB port, it could help you charge the device (phone, tablet, or other compatible device) faster without any harming the device. Besides, you could know your power station status clearly with the LCD display.
  • ✅ On-the-go generator: 6.5x2.9x7.3 inch compact size and 3.30Lb weight, it’s easy to take it anywhere with its carry-handle. Besides, it’s gas free, no noise and does no harm to health and nature.
  • ✅ Rechargeable anywhere: Not only charged by AC wall outlet and car, but also could be charged by solar panel. Especially Built-in MPPT technique, it will help maximize power extraction at all. And the Smart Energy Control could ensure the charge efficiently and save the power.
  • ✅ Reliable Emergency power: Built-in Battery Management System ( BMS ) with the protection of over-temperature, over-voltage, over-power, over-current, and short circuits, to keep your charged device safe. We also provide 12-month warranty. If you have any question, please don’t hesitate to contact us.
SaleRANK NO. 8
200W Portable Power Station, FlashFish 40800mAh Solar Generator with 110V AC Outlet/2 DC Ports/3 USB Ports, Backup Battery Pack Power Supply for CPAP Outdoor Advanture Load Trip Camping Emergency.
  • Multiple Charging Outputs Provide More Options: Features with AC/ DC/ USB OUTPUTS: 110 AC output (200W), 2 DC output, 2 QC 3.0 quick charge USB port and 1 USB ports (2.4A auto). Power your smartphone, tablet, laptop, camera, light, drones, fans, in-car appliances, CPAP machine and more at anytime.KINDLY NOTE THAT THE POWER STATION CAN NOT BE CHARGE AND USE AT THE SAME TIME.
  • High Performance And Handy Power Source: 151Wh (40800mAh) compact station is powerful enough to meet different kinds of electricity demands outdoor usage for home, travel, camping, backseat on long road trips.With a weight of 4.07lb and soft handle, we can easily put it in our backpack or car, take to everywhere need power.
  • Other Unique Design: 1)The standalone AC/DC provides easy operation when charging different devices;2)Mutifuction LCD display would show you the remaining energies/charge/discharge/AC output/DC output status.Ultra bright LCD screen let you know the statue of battery pack even no light source camping.
  • Triple Rechargeable Modes Efficient Solar Generator: FlashFish power station is equipped with a lithium battery pack, it can be charged by the 15-24 volt solar panel (not included), AC wall adapter and car charger efficiently. No memory effect, no worry about battery capacity reduction
  • MultiProtect And Warranty: The generation provides all-round protection to protect you against overcurrent, overvoltage, and over-temperature, ensuring the safety of you and your devices.❤Flashfish provides our dear customers with warranty of 12 months from the date of purchase and friendly customer service.
RANK NO. 9
EF ECOFLOW Portable Power Station EFDELTA, UPS Power Supply 1260Wh Battery Pack with 6 1800W (3300W Surge) AC Outlets, Solar Battery Generator for Outdoor Camping RV
  • 【Multiple Charging Outputs Provide More Options】DELTA features 6* AC outlet (100V-120V 1800W 3300W Peak), 2*USB-C port, 2* USB-A ports, 2*USB-A fast charge and 1* standard DC 13.6V port , power your smartphone, laptop, camera, drones, in-car appliances, CPAP machine, refrigerator, blender and more at anytime without worry.
  • 【Triple Rechargeable Modes Efficient Solar Generator】EcoFlow power station is equipped with a lithium battery pack, it can be charged by the 10-65V solar panel (not included), AC wall adapter and car charger efficiently. We do not recommend using third-party solar panels.(If you must use it and need a DIY wiring, kindly please refer to the product description for the correct method)
  • 【Recharge From 0% TO 80% Within 1 Hour】EFDELTA can be recharged from 0% to 80% in 1 hour and to 100% in 2 hours. X-STREAM TECHNOLOGY: ECOFLOW patented X-Stream Technology empowers EFDELTA recharged at 10 times the speed of most portable power stations in the market with just a standard AC cable. (NO HEAVY, BULKY ADAPTOR or BRICK).
  • 【High Performance and Handy Power Source】DELTA is a portable power station with 1260Wh,which to meet different kinds of electricity demands outdoor usage for home, travel, camping, backseat on long road trips.
  • 【Warranty and What you Can Get】 EcoFlow provides our dear customers with warranty of 24 months from the date of purchase and friendly customer service. WHAT YOU GET: 1 EFDELTA 1260Wh portable power station, 3 types of charging cable (1*AC plug, 1*Car Charge Cable, 1*MC4 to XT60 Solar Panel Cable), 1*EFDELTA Bag , 1*User Guide.
SaleRANK NO. 10
AIMTOM 42000mAh 155Wh Power Station, Emergency Backup Power Supply with Flashlights (Solar Panel Optional), for Camping, Home, CPAP, Travel, Outdoor (110V/ 100W AC Outlet, 3X 12V DC, 3X USB Output)
  • ▲ GIGANTIC 42000mAh BATTERY WILL COVER ALL YOUR NEEDS: The AIMTOM SPS-155 Portable Generator, which has an IMMENSE 42000mAh 155Wh power capacity, is ideal for powering appliances at a campsite, a tailgate party, home improvement projects or can even double as a flashlight for emergencies.
  • ▲ ONE POWER GENERATOR FOR ALL YOUR DEVICES: Power up your laptop, stereo, CPAP or any other home appliances via the 110V/100W AC outlet. Use the 3 x 5V USB outputs to charge your mobile phone, iPhone, iPad, GPS or action cameras while the 3 x 12V DC outputs are perfect for car refrigerators, fans and more.
  • ▲ TAKE YOUR POWER SUPPLY WITH YOU ANYWHERE: Even though our power station features a HUGE 42000mAh lithium battery, it weighs ONLY 3.48lbs. Plus, the comfortable and ergonomic handle will make carrying your outdoor emergency power sources a breeze. Just slip it in your car trunk and embark on your next adventure.
  • ▲ SO QUIET, EFFICIENT POWER: Rest assured that your portable battery will not disturb you or your loved ones, since it utilizes a built-in power inverter and runs quietly. It can be recharged via supported solar panels (Not included), car port, or AC wall outlets. Its built in MPPT controller automatically optimizes charging process and maximizes power extraction from solar panels under all conditions.
  • ▲ ADVANCED BATTERY MANAGEMENT SYSTEM: The built-in BMS protects you against overcurrent, overvoltage, and over-temperature, ensuring the safety of you and your devices and prolonging battery life. It also features a built-in cooling fan to avoid overheating when charging.
RANK NO. 11
MARBERO 167Wh Portable Power Station, 45000mAh Solar Generators Lithium Battery Power Supply with 110V AC Outlet, 2 DC Ports, 4 USB Ports, LED Flashlights for CPAP Home Camping Emergency Backup
  • 【167Wh Large Capacity Battery Power】: The power station provides larger power capacity, which can efficiently power up the same electronic devices longer. It can fully charge the mobile phone 22 times, the laptop 4 times, the CPAP machine takes about 4 hours(time will be different according to the machine power), the led light is more than 40 hours, and the mini refrigerator is about 5 hours. Applicable for emergency situations such as hurricane emergency, camping off-grid, short blackouts.
  • 【2 Recharging Methods】: There are 2 ways to charge the emergency battery supply. It takes about 7-8 hours to be fully recharged by AC 110v wall socket; It can recharge under direct sun light with solar panel (DC 16.6-25V/1.5A Max and sold separately, not included, Solar MC4 Connectors included).
  • 【Widely Range of Application】: The portable power station supports Qualcomm QuickCharge 3.0 output, support 5V-9V/2.1A max output for smart devices which also support Qualcomm QuickCharge 3.0. Support 5.5mm DC 16V car kits with DC-cigarette lighter adapter, such as inflation, pump, electric wrench, fridge, etc. Limited appliance wattage <100W, such as lamp, electric fan, TV, etc. It can also be used for laptop, camera, cell phone, tablet, heater, radio, USB-powered night light.
  • 【Portable Power Source & Emergency Light】: The rechargeable power station weighs only 3.6lbs and a compact handle design makes it easy to take it to everywhere. Built with white LED flashlight, which could give off 3 lighting modes (steady light, flashing light SOS mode) to meet your different needs. Press the light button for 3 seconds to turn on the light, and then press again to switch to blink / SOS mode. When you go out camping or experience power outages, this power supply can help you.
  • 【Multi Charging Ports】: MARBERO lithium backup battery pack equipped with 167Wh capacity (45000mAh), 2*USB ports(5V/ 2.1A), 1*QC3.0 USB port (5V-9V/ 2A), 1*TYPE-C port (5V-9V/ 2A, QC3.0), 2*DC ports (12V-16.6v/ 10A), 2*AC ports (110V/60Hz, max 100w, peak 200w). We provide you 45 days replacement or full refund and 24 months warranty. If you have any question, please feel free to contact us and we sincerely offer 24 hours friendly customer service.

Best Portable Power Supplies Buyer Guide

Although often not given all the importance it deserves, choosing a PC power supply can have a significant influence on a computer’s performance.

Therefore, it is not convenient to give in to the temptation to buy one of the poor quality and, consequently, cheaper, to slightly increase the budget to be allocated to other components.

As the saying goes, virtue lies in the middle. If you are thinking of mounting your computer piece by piece, it is essential to install a suitable power supply and take into consideration any expansions you want to make on the device. Choosing the correct power supply, however, doesn’t just mean buying the most powerful model.

The Most Affordable Rgb Lighting Option

The 700W Thermaltake Smart RGB is the ideal solution for those who want to illuminate the interior of their homes, without spending vast amounts of money.

Thanks to a button located on the back and accessible from the outside, it is possible to set a fixed light or a cycle of all colours, or even turn it off completely.

Buyers are enthusiastic about the aesthetic value of the product, although it is not modular; the lighting configuration is independent of the motherboard, which has its advantages and defects.

Purple Leaf Universal Notebook Power Adapter

From first glance, this power supply stands out for an important detail: it is ultra-thin. Thanks to this peculiarity, it takes up very little space and is easily transportable, with the possibility of storing it even in your handbag: it is also very light.

It is a high-efficiency model, with a maximum power of 90 W; it is also compatible with 70 W, 65 W and 45 W. Safe and reliable. It is designed with a 13-pin DC plug-in connector, which ensures a full possibility of use with the main laptop models on the market.

The input is AC 100-240 V 50-60 Hz; the output is DC 15V-20V / 4.5A. To further increase the versatility of the device is the USB port 5 V / 2.1 A. Together with the power supply, the package contains an AC power cable, a DC power cable, 12 extra tips.

The Best Mid-To-High-End Gaming Pc Power Supply

The Asus ROG Strix 650G is one of the best proposals regarding the 650 W range, the one most commonly adopted for gaming PC configurations with a medium-high range video card.

It has an 80 Plus Gold certification, is entirely modular, and has a fan that buyers call silent even during the most stressful sessions. It’s a bit longer than the cheaper proposals, but it offers first-class reliability and connectivity.

Kensington

It takes just a few simple steps to configure this power supply. All you have to do is check the voltage value of the original power supply and, based on this, set the appropriate switch on the device.

Black in colour, the device weighs 499 g and has a size of 1.9 x 13.3 x 7.4 cm. It protects against overcurrent, overvoltage, short circuits and excessive temperatures.

What Exactly Are Portable Power Supplies?

The power supplies have the task of transforming the alternating current of the electrical network into direct current, that is, that used by the various components of the computer. In this way, they meet the energy demand of each of the elements of the device.

Therefore, the power supplies take an alternating current of 115/230 V and transform it into low voltage direct current which they distribute through various outputs. Therefore, if the processor is the brain of a computer, the power supply can be considered its heart.

If you are looking for an inexpensive power supply to save on other components, there are not many options at the moment.

Connect with Sata Cables

We, however, recommend the EVGA 500 B1. It costs less than a video game and boasts 500 watts of power transmitted through six SATA cables and two PCIe cables.

This is, without doubt, one of the best power supplies because it is essential and honestly does its job. Even the three-year warranty does not hurt.

Unfortunately, power supplies don’t always fit into smaller homes. However, Silverstone SFX SST SX550 is a compact power supply also ideal for mini-ITX homes.

Its dimensions are approximately half compared to the standard format and consequently guarantee a better airflow. This makes it a convenient choice for anyone who is building a mini ITX or micro ATX build, but it is also suitable for larger homes.

Small form factor PCs are in high demand, so we could not exempt Silverstone SFX from our guide.

How Does a Portable Power Supply Work?

Current power supplies work by converting all alternating current (AC) to direct current (DC) of +12 V. Then, other converters transform part of this DC from +12 V to DC from +5 V or +3.3 V to depending on your needs. This system is much more efficient and safer than direct conversion from AC to different DC voltages.

Subsequently, a series of inductors and capacitors has the task of filtering the electrical noise that can damage the different components of the device.

Also, the power supply must make a voltage adjustment to respond to changes in load (consumption) to which it is subjected.

If you are attentive to the design of your PC, a modular power supply is mandatory: you can avoid the mess generated by unused cables as well as improve the airflow in the case. NZXT E650 is meant for this.

Not only is it a completely modular power supply, but it’s also lovely to look at. All this is completed by the 80 Plus Gold certification and by a ten year guarantee.

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