Best Portable Function Generators in 2026

AMP & VOLT DUAL SIGNAL GENERATOR: Multifunctional DROK signal generator kit is able to generate ampere & voltage by 1 module, which generate 0/4 - 20mA current signal and 0-10V voltage signal just by rotating a multi-cycle precise potentiometer, simple and handy.

CLEAR LED DISPLAY: Our 4-20ma signal generator has bright and clear 3-digit LED digital display screen, which can be used to monitor the output current and voltage. You just need to push the switch below the monitor easy to switch the display.

AMP & VOLT DISPLAY CALIBRATION: There are current and voltage display calibrating potentiometer on the back of the module. If the display is accurate, you can calibrate the display value of current voltage by yourself.

【Powerful Engine】5000 Rated Watts and 5500 Peak Watts at Less Than 3% THD，Telescoping Handle ，Manual / Electric start， 3.9 Gallon Fuel Tank With Fuel Gauge，Up to 10 Hours of Run Time with 120/240V Volt Selector Switch.

【Wide Application】 GENMAX portable generator is great for home emergency power supply，campgrounds, construction sites, mobile devices and power outages. This generator is very durable that provides continuous power to handle multiple jobs, such as powering high voltage appliances and heavy duty power tools in different job sites.

【Multifunctional power supply panel】Includes low oil alarm, overload alarm,Co warning light ，output indicator features and Fault alarm function，“Eco mode” for conserving energy and maximum fuel efficiency，An easily accessible TT-30R RV outlet makes the perfect for travel trailers.

Compatible with Makita: Fits for all Makita 18V max lithium batteries, turning your Makita battery into a small generator (Battery is NOT included)

Powerful Charging: The DC to AC output voltage of this power inverter is 110v ~ 120v. Equipped with a 5V 3.1A USB-A port and a PD 20W 5V 3A Type-C port, you can quickly charge up to three devices simultaneously. Great for phones, tablets, laptops, radios, small fans, led lights and so on

Compact LED Nightlight: Featuring a 450LM LED work light, with its compact size (4 x 3 x 4in) and lightweight 0.7LB, this portable battery inverter is a great gadget for outdoor power solution and outdoor camping light, and you can store it anywhere

Specifications : Max power 20W, Rotating speed: 2000rmp/min, Size 179*92*84 mm, Material metal generator body, Color Blue;

Voltage/Current: 3V/6.6A, 5V/4A,6V/3.3A, 9V/2.2A,12V/1.6A, 15V/1.3A(The current is an unloaded current, which is connected to different products, and the load current will change after charging;);

100% brand new and high quality. Package Includes: 1 x Crank Generator , 1 x Instructions

🚀【Portable Power Inverter】The power inverter has a 150V household socket, 2 USB ports, 1 light. *Input voltage: DC 18V | Output voltage: AC 110V~120V | USB output: DC 5V/2.4A | LED light: 200lm. (US plug)

🚀【Compatible with Ryobi 18V Battery】Suitable for Ryobi 18V lithium battery and 18V nickel battery, DC to AC charger.

🚀【Reliable wireless power】Charge your laptops, tablets, cellphones, kindles, game consoles, lights, speakers, TVs, cameras, drones, and more. Not compatible with products over 200W such as, most power tools, fridges, coffee pots, microwaves, etc. Perfect for home or travel. Phone-size design is ideal for work, jobsites, camping, tailgating, vacations, home emergency backup power, and wherever outlets are scarce.

🌟LARGE CAPACITY BATTERY PACKS: HP300T 288Wh 80,000mAh high quality lithium batteries, pure sine wave AC outlet, power station, portable power supply, solar generator, home emergency backup power. It doesn’t only power music player, smartphones, tablets, camera, car refrigerator, car wash, car vacuum… but also can power projector, printer, GPS, drone, laptop, computer, CPAP machine, fan, TV, holiday lights…

🌟MULTI-FUNCTION OUTPUTS: HP300T portable generator has high efficient and multi-function power outputs to meet different power requirements for family trips, outings, camping, or wherever you may need electricity. 【1】2* 110V/60Hz pure sine wave AC outlet; 【2】2* QC 3.0 USB Output (MAX 18W); 【3】1* 60W PD/type-C USB Input & Output 【4】1* 18W PD/type-C USB Output; 【5】1* 12V~16V (Max: 15A) Car Cigarette Lighter socket; 【6】1* 2W LED light with 3 modes( Strobe, Solid, SOS).

🌟EASY CHARGED METHODS: You can charge the power station by 3 methods. [1]110V AC wall power socket to charge fully within 8 hours. [2]12V car cigarette lighter can fully charge around 8~9 hours. Or with a 60W PD charger (NOT included) plug in the 60W PD type-C socket to charge fully around 7 hours. [3] You can also use solar panel to charge the power station during the daytime anywhere. Suggested 60~150W (15V/3A) Solar Panel (Purchase separately), the charged time depends on the sunlight.

🔋【Portable Power Inverter Generator】Attach with for Milwaukee 18V M18 battery 48-11-1850 to provide continuous power or recharge personal devices and small electronics with 1 AC 110V-120V Outlet, 1 USB-C PD Port, and 1 USB-A Port. Quickly charge up to 3 devices at the same time. Modified Sine Wave inverter working faster, quieter and more stable. Also it could be a portable power supply for outdoor activity, like camping, hiking and fishing.

🔋【Compatible with Milwaukee 18V Battery】Suitable for Milwaukee 18V Lithium Batteries, such as 48-11-1815, 48-11-1820, 48-11-1822, 48-11-1840, 48-11-1850, 48-11-1860 etc., turns for Milwaukee batteries into small generators.

🔋【Reliable wireless power】Charge your laptops, tablets, cellphones, kindles, game consoles, lights, speakers, TVs, cameras, drones, and more. Not compatible with products over 200W such as, most power tools, fridges, coffee pots, microwaves, etc. Perfect for home or travel. Phone-size design is ideal for work, jobsites, camping, tailgating, vacations, home emergency backup power, and wherever outlets are scarce. (Below 200W)