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.

SaleRANK NO. 1
KOOLORBS Makeup 21 Led Vanity Mirror with Lights, 1x 2x 3x Magnification, Touch Screen Switch, 180 Degree Rotation, Dual Power Supply, Portable Trifold Makeup Mirror
  • Upgraded 21 LED bulbs; a good brightness for makeup; dim or brighten up the lights with a long pressing of touch screen switch
  • 1X,2X,3X magnification modes; 3 panels magnifying and wide-angle viewing; see clearly your face and make a flawless makeup
  • Dual power supply; Power the light makeup mirror by USB charging cable or 4xAAA batteries; Batteries not included
  • 180 degree rotation; adjust the mirror as per the suitable viewing angle you wish
  • Customer first; we can help if you have any issues with your purchase; high-class certification; a number of authorities including FCC, ROHS, and CE
YAMAHA P71 88-Key Weighted Action Digital Piano With Sustain Pedal And Power Supply (Amazon-Exclusive)
  • Amazon exclusive model includes power adapter and sustain pedal
  • 88 fully weighted piano style keys simulate the feel of an acoustic piano and provide a quality playing experience
  • Contains 10 different voices, including digitally sampled tones from real Yamaha acoustic grand pianos
  • Dual mode lets you combine 2 voices together, like piano and strings, for an inspiring new playing experience
  • Slim and stylish design with a depth of less than 12 inches, the P71 requires little space and weighs only 25 pounds
SaleRANK NO. 3
TACKLIFE T8 800A Peak 18000mAh Car Jump Starter (up to 7.0L Gas, 5.5L Diesel Engine) with LCD Screen, USB Quick Charge, 12V Auto Battery Booster, Portable Power Pack with Built-in LED Light
  • POWERFUL BUT COMPACT: With 800 amps peak current, the Tacklife T8 can jump start 12V cars, SUVs, trucks or vans up to 30 times on a full charge (charging takes 4.5 hours). It’s a compact power bank (18000mAh capacity), can charge your phone with dual USB ports (one is a 5v/9v Quick Charge) and can power your other car accessories using a 12V 10A DC port.
  • LONG-LASTING STANDBY TIME: Unlike other car jump starters, you can manually turn the Tacklife T8 ‘OFF’ to slow down the battery's self-discharge – allowing to the T8 to hold its charge for up to 12 months while not in use. (Please remember to turn ‘ON’ before charging or it will not charge.)
  • USER-FRIENDLY EXTRAS: Not just a car battery charger, the T8 comes equipped with super bright LEDs functioning as an emergency flashlight. The red light can function as a traffic hazard warning signal in the event of an accident. The T8 is a multifunctional life-saver with a strobe, SOS signal and built-in Compass. The digital LCD screen clearly displays the remaining power.
  • WELL-DESIGNED: The unique design of the Tacklife T8 car jumper is bold but easy to handle. The specially designed indicator notifies you of incorrect use with an audible buzz and flashing lights. The full metal clamps are built to last and are ergonomically designed to be easy to open.
  • WHAT’S INCLUDED: TACKLIFE T8 jump starter, smart jumper cables, wall charger, car charger, USB cable, cigarette lighter socket adapter, EVA carrying case and 2-year warranty. Our after-sales customer service is available at any time. Please feel free to contact us for help.
BALDR Portable Power Station 330W, 2019 Updated Portable Solar Generators for home use, CPAP Backup Battery with QC3.0&TypeC SOS Flashlight and Wireless Charger for Outdoor Camping Travel Emergency
  • 【LARGE CAPACITY PORTABLE POWER STATION】: Baldr330 portable power station with 297wh power capacity,which can effectively power the same electronic equipment longer than other camping batteries. Baldr330 portable power station generator has powerful functions, and can be used for home / travel / Camping after full charge, charging mobile phones, tablet computers, tablet computers, GPS, notebook computers, walkie talkies, GoPro, cameras, drones, holiday lights and CPAP machines
  • 【THREE EASY CHARGING METHODS】: 1) Any compatible 100W solar panel (not included) can be used to charge the solar generator in the way of solar energy, portable generator can be fully charged in 5-8 hours. 2) Plug in the wall power socket for charging, and it can be fully charged within 5-8 hours. 3) Plug in the 12V socket of the car to charge, and it can be fully charged within 7-8 hours. And the generator is only 7.1 pounds, you can carry it with you, never worry about the lack of power supply
  • 【MULTI FUNCTION OUTPUT PORT】: BALDR power station has standard 1 * pure sine wave AC power socket; 3 * QC 3.0 USB (5V / 3a, maximum 15W); 1 * C type (5V / 3a, maximum 15W); 1 * vehicle port (maximum 12V / 10A 120W); 2 DC ports (maximum 12V / 5A 60W). Power CPAP anywhere:We strongly recommend that CPAP users use DC converter to work with this portable power station for better effect.
  • 【SAFE AND RELIABLE】: Portable power station use battery management system (BMS) to improve battery utilization, and extend battery service life through short circuit protection, overcurrent protection, overvoltage protection, overload protection, overheating protection and other functions. In addition, the portable generator is equipped with a wireless charger and a built-in multi-mode flashlight, which can quickly charge the mobile phone in case of emergency and help with LED SOS mode
  • 【HEALTH AND GUARANTEE】: Pure sine wave inverter, working faster, quieter and more stable. No gasoline or toxic fumes, completely healthy and environmentally friendly. Baldr solar generator always provides professional and friendly customer assistance so that you can better understand and use the product. We offer 30-day refund guarantee, 2-year warranty and 24-hour friendly customer service
Anker PowerCore 10000 Portable Charger, One of The Smallest and Lightest 10000mAh Power Bank, Ultra-Compact Battery Pack, High-Speed Charging Technology Phone Charger for iPhone, Samsung and More.
  • The Anker Advantage: Join the 50 million+ powered by our leading technology.
  • Remarkably Compact: One of the smallest and lightest 10,000mAh portable chargers. Provides almost three-and-a-half iPhone 8 charges or two-and-a-half Galaxy S8 charges.
  • High-Speed Charging: Anker’s exclusive PowerIQ and VoltageBoost combine to deliver the fastest possible charge for any device. Qualcomm Quick Charge not supported.
  • Certified Safe: Anker’s MultiProtect safety system ensures complete protection for you and your devices.
  • What You Get: Anker PowerCore 10000 portable charger, Micro USB cable, travel pouch, welcome guide, our worry-free 18-month warranty and friendly customer service. USB-C and Lightning cable for iPhone / iPad sold separately
SaleRANK NO. 6
PRYMAX Portable Power Station, 300W Solar Generator 2019 Updated 298Wh CPAP Backup Battery Pack with LED Flashlight,110V/300W Pure Sine Wave,AC Outlet, QC3.0 USB,for Outdoors Camping Travel Emergency
  • 🔥【298Wh Large Capacity Battery】Featuring with updated lithium battery cells, this power station is 298Wh powerful enough to charge a smartphone 40 times, laptops 7-8 times, 32" TVs 5+ hours, CPAP 4+ nights(using DC converter), mini-refrigerator 5+ hours, lights or other small appliances. Rated power is 300W while peak surge power is 600W.
  • 🔥【Super Multiple Ports】Prymax portable power bank is equipped with much richer ports than others, including 2* AC output ports(pure sine wave), 3* DC ports(12&24V output, 19V input), 2* 5V 3.1A USB ports, 1* 5V3A/9V2A type-c quick charge port, 1* 12/8A cigarette lighter port, fully meeting the needs of your travel charge.
  • 🔥【Run More Safely】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. Built-in Smart and Silent Cooling Fan will automatically turn on the fan when the unit is hotter to maintain the unit at the constant temperature without running the fan constantly. The low-noise and gas-free design make it more environmentally friendly.
  • 🔥【Compact and Portable】With an easy-carry handle, Prymax power station is a portable model in its class at just 6.5 lbs and 9*7.6*5.5 inch/23*19*14cm. Take it with you on-the-go and never worry about power shortage. Flashlight with SOS light design provides convenience for your outdoor emergency.
  • 🔥【What You Get】Package includes 1*298Wh portable power station, 1*AC power adapter, 1*user manual and 1*service card. Prymax always offers professional and friendly customer assistance so that you could better understand and use the product.
SaleRANK NO. 7
Bellababy Double Electric Breast Feeding Pumps Pain Free Strong Suction Power Touch Panel High Definition Display
  • 🎄 Come with 2 pcs of milk storage bag adapters and 10 pcs of storage bag,moms can express to the milk storage bags directly by the adapters.BPA and Phthalates Free
  • 🎄 Closed System,4 modes and 9 levels of suction for choice,massage and stimulate breasts before pumping,comfortable and pain free.
  • 🎄 High definition Screen,display the working mode,suction level,time and battery status etc clearly
  • 🎄 Sensitive touch panel,click by one finger to operate,easy and convenient.
  • 🎄 Lightweight and portable,2200mAh Li-ion battery built-in,good for travel.
Celestron - PowerTank Lithium Telescope Battery – Rechargeable Portable 12V Power Supply for Computerized Telescopes - 10 hour capacity/86 Wh - Red/White LED Flashlight - 2 USB Ports
  • PORTABLE POWER MADE FOR ASTRONOMERS: The perfect solution for most computerized telescopes, PowerTank Lithium features a 12V connection, 10 hours of battery life, an onboard red/white LED flashlight, USB ports, and more. Mounts directly to the tripod leg.
  • SMALLER, LIGHTER, SAFER: Unique Lithium-Iron Phosphate (LiFePO4) chemistry makes this battery smaller and easier to maintain compared to sealed lead acid batteries, and safer than lithium cobalt batteries. Does not use toxic heavy metals.
  • 10 YEARS OF DEPENDABLE PERFORMANCE: Unlike other batteries with limited lifespans, PowerTank Lithium will be your companion for years of astronomy adventures; it is rated to withstand up to 2000 charge cycles.
  • WORKS WITH A VARIETY OF DEVICES: 12V connection works with all current Celestron computerized telescopes. PLUS, two USB ports—one quick charge and one regular.
  • AN EMERGENCY KIT ESSENTIAL: Keep PowerTank Lithium charged and ready for unexpected power outages. The USB ports will keep your devices charged while the flashlight will illuminate your surroundings.
SaleRANK NO. 10
POWERBES DC Power Supply Variable 30V 10A - Adjustable Switching Regulated Benchtop Power Supply - Highly Portable, 3-Row & 4 Digits Display, Highly Accurate (0.01V - 0.001A), Testing Leads Included
  • LIGHTWEIGHT & ULTRA DURABLE - Take it to work! This powerful test bench power supply is highly portable, with built in intelligent temperature control. Weighing only 2.6 pounds and measuring L3.3" x W9.4" x H5.9"
  • BETTER CONTROL ON OUTPUT - Almost all other variable DC power supplies only have a double row display for data. The POWERBES LED display features 3-rows of digits. See and control the output power with clarity, and enjoy a better level of awareness while testing.
  • ALL NEW - UPGRADED MOTHERBOARD - Read even the slightest of power changes. This machine’s modern motherboard and the updated program let you read as low as 0.01V or 0.001A. Maximum accuracy and minutest readings in the lab or technology R & D.
  • BONUS LEADS/CABLES INCLUDED - All the necessary leads/wires/cables that you need for different types of testing, are included with this variable voltage power supply. You get three style test leads including 5A, 10A, and 15A. Also includes a USB port!
  • POWERBES COMMITTED TO QUALITY + 2 YEAR WARRANTY - We do not ship a single bench DC power supply unit without having it go through fool-proof quality assurance. Buy Now Risk-Free with a 30-day return policy and a 2-year warranty on each unit.

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.


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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