Uploaded June 2025 | Updated September 2026, 2 weeks ago
This little inverter claims to run off of standard Makita 18 volt batteries. Let's take a look and see.
In this review and test, I try out a low-cost inverter-style power supply that claims to convert 18–21V from a Makita battery into 220V AC or USB charger output for portable use. We walk through the specs, connection process, and show how it performs, revealing its limitations, quirks, and real-world run times for various loads. From square wave output concerns to the long list of appliances it can’t power (motors, iron-core transformers, dimmable lights), this video is part hands-on test, part buyer-beware guide for DIYers thinking of adding one to their toolkit. I also break down the math on runtime at different voltages, discuss the impact of battery capacity, and share why this device is more of a novelty or niche gadget than a practical job-site power source. If you’re into DIY electronics, battery tools, portable power experiments, or simply want to see if these budget Makita-style inverters are worth it, this deep-dive has the answers.
MANUFACTURER'S CLAIMS (I make no assertion about their correctness)
Power: 120W (Peak 300W)
Input: DC 18v - DC 21v
Ouput: 220v (output voltage varies with input voltage)
Static current: about 0.05A
USB: Charge power 27W (5V/3A, 9V/3A, 12V/2A) White power: 15W (5V/3A)
Voltage display: 5V-30V
Protection: Overheat protection, overload protection
Applicable scope of DC output:
Switching power load, mobile phone charger, laptop charger, power tool charger, lamp set-top box, LCD small TV, router WIFI, LED LCD lamp, ordinary tungsten filament lamp, energy-saving lamp, ordinary non-temperature-regulating electric soldering iron, etc.
Applicable scope of AC output:
Circuits that require high-frequency voltage, voltage-doubler rectification circuits, and resistive electrical appliances: ordinary tungsten filament bulbs, electric soldering irons, and so on.
Not applicable appliances:
Iron core transformers such as audio equipment, electromagnets, solenoid valves, relays, and AC contactors that use iron core transformers. Temperature regulating electric soldering irons, dimming type.
Disclaimer: This information is presented as entertainment only on an "as is" basis and any use the viewer makes of it is solely up to them, and it is their responsibility to determine if the information remains current and if it is applicable to their situation. The viewer is responsible for any and all safety involving this. Viewing this video is the viewer's agreement to these terms and conditions. If you do not agree, stop now.
#MakitaBattery #DIYElectronics #PortablePower #InverterReview
This little inverter claims to run off of standard Makita 18 volt batteries. Let's take a look and see.
In this review and test, I try out a low-cost inverter-style power supply that claims to convert 18–21V from a Makita battery into 220V AC or USB charger output for portable use. We walk through the specs, connection process, and show how it performs, revealing its limitations, quirks, and real-world run times for various loads. From square wave output concerns to the long list of appliances it can’t power (motors, iron-core transformers, dimmable lights), this video is part hands-on test, part buyer-beware guide for DIYers thinking of adding one to their toolkit. I also break down the math on runtime at different voltages, discuss the impact of battery capacity, and share why this device is more of a novelty or niche gadget than a practical job-site power source. If you’re into DIY electronics, battery tools, portable power experiments, or simply want to see if these budget Makita-style inverters are worth it, this deep-dive has the answers.
MANUFACTURER'S CLAIMS (I make no assertion about their correctness)
Power: 120W (Peak 300W)
Input: DC 18v - DC 21v
Ouput: 220v (output voltage varies with input voltage)
Static current: about 0.05A
USB: Charge power 27W (5V/3A, 9V/3A, 12V/2A) White power: 15W (5V/3A)
Voltage display: 5V-30V
Protection: Overheat protection, overload protection
Applicable scope of DC output:
Switching power load, mobile phone charger, laptop charger, power tool charger, lamp set-top box, LCD small TV, router WIFI, LED LCD lamp, ordinary tungsten filament lamp, energy-saving lamp, ordinary non-temperature-regulating electric soldering iron, etc.
Applicable scope of AC output:
Circuits that require high-frequency voltage, voltage-doubler rectification circuits, and resistive electrical appliances: ordinary tungsten filament bulbs, electric soldering irons, and so on.
Not applicable appliances:
Iron core transformers such as audio equipment, electromagnets, solenoid valves, relays, and AC contactors that use iron core transformers. Temperature regulating electric soldering irons, dimming type.
Disclaimer: This information is presented as entertainment only on an "as is" basis and any use the viewer makes of it is solely up to them, and it is their responsibility to determine if the information remains current and if it is applicable to their situation. The viewer is responsible for any and all safety involving this. Viewing this video is the viewer's agreement to these terms and conditions. If you do not agree, stop now.
#MakitaBattery #DIYElectronics #PortablePower #InverterReview
