Top 10 Best battery converter in 2026

Last Updated - 6/15/2026

🏆Best Choice

Azocek

220W Azocek Power Inverter Compatible with Milwaukee 18V Battery, DC 18V to AC 110V Portable Power Station with 1 AC Outlet, 2 USB Ports & 1 Type-C Fast Charging, 400LM LED Work Light

9.8

ChoiceComparer.com Score

9.8

/ 10

Outstanding

Main highlights

•Compatible with 18V Batteries: This Azocek power inverter is specifically designed Compatible with Mil-wau-kee 18V batteries (e.g., 48-11-1815, 48-11-1850, 48-11-1820), powered directly by the battery, provides portable power for outdoor activities or emergencies anytime, anywhere (Battery not included)
•220W DC to AC Power Conversion: Converts 18V DC to 110V-120V AC, providing a reliable power source for phones, laptops, tablets, and other small electronics, making it essential for travel and power outages.
•Fast Charging USB and Type-C Ports: This Azocek power inverter features one AC outlet, two 18W USB QC ports, and one 30W PD Type-C port, enabling the simultaneous rapid charging of multiple devices.
•Multi-Function 400LM LED Light: Equipped with a 3-level adjustable brightness LED work light, strobe function, and a 90-degree adjustable lighting angle, making it ideal for outdoor use and emergency situations.
•Enhanced Safety Features: This inverter provides comprehensive protection against short circuits, overcurrent, low voltage, overheating, overload, and over-discharge. The built-in cooling fan effectively dissipates heat, ensuring reliable operation in various environments.

View offer on:

$28.59

$35.99

-21%

Check Price

CHoiKWong

1 Packs Power Wheel Adapter for Milwaukee M18 Battery Adapter 18V Power Wheel Battery Conversion Kit with Switch, Fuse & Wire Terminals, 12AWG Wire, Power Connector for DIY Rc Car Toys and Robotics

9.7

ChoiceComparer.com Score

9.7

/ 10

Outstanding

Main highlights

•Compatible with Milwaukee M18 battery 18v series 48-11-1815 / 48-11-1820 / 48-11-1828 / 48-11-1840 / 48-11-1850 / 48-11-1860 and more. Our battery adapter connector is well-made, snug fit your battery, can install and lock battery easily. Made of ABS plastic, heat resistant and not easy to corrode, suitable for indoor and outdoor use
•Better security, we upgrade the line protection device of the battery adapter. Added switch ensures you can turn on&off the battery easily, equipped 30Amp fuse protect battery devices from overpower damage, fuse holder rubber cap fits on tightly to protect blade fuse inside. Silicone copper wire improves the conductivity and safety, heat-resistance 12 AWG wire is suitable for high-power applications
•Easy to use, only need to move the power adapter into the groove, then push converter and make sure it has locked the battery. If you want to remove the adaptor from the battery, please press down the buckle of the battery, then remove it. There are 2 fixing screw holes on the adapter, can be well fixed to the walls, machines or DIY product
•Widely used, power wheel battery adapter has 12 gauge wire installed, Maximum permissible current 20A, provides enough power upgrade your power tools, ride on toys, work lights or robotics DIY. Package includes 1 pack power wheel adapter with fuse holder and 3 pack 30Amp fuse and 1 pack wiring terminal, 2 screw fasteners (Note: battery not included)
•Important Tips: This converter is not a charger, it only outputs the voltage and power directly from your battery. The red wire is connected to the positive terminal, black wire is connected to the negative terminal. When using, make sure that the positive and negative wires of the device correspond to the positive and negative wires of the adapter. If not used for a long time, please be sure to remove the battery form the adapter

View offer on:

$9.99

Check Price

CHoiKWong

2 Packs Power Wheel Adapter for Milwaukee M18 Battery Adapter 18V Power Wheel Battery Converter with Fuses & Wire Terminals, 12AWG Wire, Power Connector for DIY Rc Car Toys, Robotics and Rc Truck

9.5

ChoiceComparer.com Score

9.5

/ 10

Outstanding

Main highlights

•✅Compatible with Milwaukee M18 battery 18v series 48-11-1815 / 48-11-1820 / 48-11-1828 / 48-11-1840 / 48-11-1850 / 48-11-1860 and more. Our battery adapter connector is well-made, snug fit your battery, can install and lock battery easily. Made of durable ABS plastic, heat resistant and not easy to corrode, perfect for indoor and outdoor use.
•✅Better security, our product upgrade has some security design. Equipped with 30Amp fuse protects the battery equipment from being damaged by excessive power. Waterproof fuse holder rubber cap fits on tightly to protect blade fuse inside. High quality silicone copper wire improves the conductivity and safety, heat-resistance 12 AWG wire is suitable for high-power applications.
•✅Easy to use, only need to move the power adapter into the groove, then push converter and make sure it has locked the battery. If you want to remove the adaptor from the battery, please press down the buckle of the battery, then remove it. There are 3 fixing screw holes on the adapter, can be well fixed to the walls, machines or DIY product.
•✅Widely used, power wheel adapter has 12 gauge wire installed, Maximum permissible current 20A, can use it to upgrade your power wheels, rc toys, work lights or Robotics DIY with enough power. Package includes 2 pack power wheel adapter with fuse holderand 6 pack 30Amp fuse and 2pack wiring terminal. (Note: battery not included)
•✅Important Tips: This converter is not a charger, it only outputs the voltage and power directly from your battery. The red wire is connected to the positive terminal, black wire is connected to the negative terminal. When using, make sure that the positive and negative wires of the device correspond to the positive and negative wires of the adapter. If not used for a long time, please be sure to remove the battery form the adapter.

View offer on:

$15.19

Check Price

Crivon

2-Pack 18V for Milwaukee M18 Battery Adapter for Power Wheels Battery Upgrade Conversion Kit with Wire Connectors Fuses 12AWG Wire Power Tool Drill Battery Converter Adapter for Kids Car, RC, DIY, Etc

9.4

ChoiceComparer.com Score

9.4

/ 10

Excellent

Main highlights

•Perfect Adapter Compatible with Milwaukee M18 Batteries: The Crivon battery adapter is fully compatible with Milwaukee 18V series batteries, including 48-11-1815, 48-11-1820, 48-11-1828, 48-11-1840, 48-11-1850, etc. This drill battery adapter snugly fits your M18 battery, easily locking into place without hassle, quickly transforming them into reliable power sources for DIY upgrade, such as for Power Wheels, for Peg Perego toys, RC cars, and more, without requiring complex wiring or extra tools
•Boost Toy Performance & Extend Playtime: Instantly upgrade your kids' electric cars, including for Power Wheels Jeep, RC trucks, DIY robotics, and battery-powered toys with Crivon battery adapter for Power Wheels. By converting power drill battery into powerful DC power sources, Crivon battery conversion kit significantly increases speed, torque, and runtime. Your kids will enjoy longer-lasting outdoor fun, making backyard adventures, park rides, and DIY toy car item more exciting and enjoyable
•Advanced Safety Protection for Peace of Mind: Made of robust ABS plastic, Crivon M18 battery adapter is heat-resistant & corrosion-proof, featuring upgraded 30A fuse holders with waterproof rubber caps and premium 12 AWG silicone copper wires supporting up to 20A current. Effectively prevents battery damage from overheating, short circuits, overloads, or excessive current, ensuring superior conductivity, enhanced safety, and stable power supply for your battery and connected powered equipment
•Convenient & Easy Installation: Designed with user convenience in mind, Crivon power converter makes installation a breeze. Simply slide adapter into battery groove until securely locked, and you're ready to power your devices. To remove, press battery buckle and detach adapter. The included wire terminals enable quick connections, alleviating any hassle during setup. Two fixing screw holes on M18 adapter allow easy mounting on wall, machine, or DIY items, providing stability and convenience
•Important Usage Tips & Precautions: Crivon power tool battery converter adapter is not a charger; it only transmits direct voltage and power from your battery. When utilizing the device, ensure that the positive (red) and negative (black) wires correspond correctly to the adapter’s terminals to avoid polarity issues. After use, remove battery from adapter to prevent unnecessary discharge, preserving battery life and adapter performance (Note: Battery not included)
•Perfect Accessories for Battery Upgrade Kits Made for Milwaukee M18 and for Power Wheels: Crivon 18V battery adapter set includes 2 battery adapters, 6 replacement 30Amp fuses, and 2 wire terminals, making it ideal for diverse applications by delivering ample power and flexibility for your battery conversion kit

View offer on:

$14.99

Check Price

Azocek

Azocek 18V to 12V Step Down Converter Compatible with Milwaukee 18V Battery Azocek Power Wheel Battery Adapter DC 12V 20A 240W Buck Converter Regulator with 30A Fuse & Wire Terminal

9.2

ChoiceComparer.com Score

9.2

/ 10

Excellent

Main highlights

•Azocek Step-down Converter: Input Voltage: DC 18V-20V; Output Voltage: DC 12V; Output Current: 20A Max; Output Power 240W Max
•Compatibility: Azocek adapter perfectly compatible with Mil-wau-kee 18V lithium batteries, works with 48-11-1815, 48-11-1850, 48-11-1820, 48-11-1840, 48-11-1815 etc. Our battery adapter connector is well-design, snugly fit your battery, easy to install and remove(Note: Battery NOT Included)
•Better Safety: Voltage regulator built-in smart chip, features Over-current, Over-voltage, Over-load, Short-circuit, Over-heat multiple intelligent protection, protect your devices from overpower damage. Battery adapter also have added fuse holder and 30A fuse ensures you can use it safely
•Easy to Use: We combine the battery adapter and the voltage converter with 2 heat-resistant wires ＆ fuse holder, make it more easy to use, just install the battery to the battery adapter and then connect the voltage converter to your device. (Note: Battery NOT Included)
•Widely Applicable: This Azocek step down converter suitable for various 12V devices, ideal for upgrade power tools, ride on toys, golf carts, car trucks, speaker, monitoring equipment, led strip light, work lights or robotics DIY etc. If you have any questions, please feel free to consult us

View offer on:

$24.99

$29.99

-17%

Check Price

CHoiKWong

2 Packs Power Wheel Adapter for Milwaukee M12 Battery Adapter 12V Battery Conversion Kit with Switch, Fuse & Wire Terminals, 12AWG Wire, Power Connector for DIY Rc Car Toys and Robotics

9.1

ChoiceComparer.com Score

9.1

/ 10

Excellent

Main highlights

•✅Compatible with Milwaukee M12 battery series 48-11-2450 / 48-11-2440 / 48-11-2411 / 48-11-2420 / 48-11-2401 / 48-11-2460 and more. Our battery adapter connector is well-made, snug fit your battery, can install and lock battery easily. Made of ABS plastic, heat resistant and not easy to corrode, perfect for indoor and outdoor use.
•✅Better security, our product upgrade has some security design. Added switch ensures you can turn on&off the battery easily, equipped 30Amp fuse protect battery devices from overpower damage, fuse holder rubber cap fits on tightly to protect blade fuse inside. High quality silicone copper wire improves the conductivity and safety, heat-resistance 12 AWG wire is suitable for high-power applications.
•✅Easy to use, only need to move the power adapter into the groove, then push converter and make sure it has locked the battery. If you want to remove the adaptor from the battery, please press down the buckle of the battery, then remove it. There are 4 fixing screw holes on the adapter, can be well fixed to the walls, machines or DIY product.
•✅Widely used, power wheel battery adapter has 12 gauge wire installed, Maximum permissible current 20A, provides enough power upgrade your power tools, ride on toys, work lights or robotics DIY. Package includes 2 pack power wheel adapter with fuse holder and 6 pack 30Amp fuse and 2 pack wiring terminal, 8 screw fasteners. (Note: battery not included)
•✅Important Tips: This converter is not a charger, it only outputs the voltage and power directly from your battery. The red wire is connected to the positive terminal, black wire is connected to the negative terminal. When using, make sure that the positive and negative wires of the device correspond to the positive and negative wires of the adapter. If not used for a long time, please be sure to remove the battery form the adapter.

View offer on:

$19.99

Check Price

Kzreect

Kzreect Battery Adapter with Switch, Over-Discharge Protection, Compatible with Milwaukee 18V Battery,Converter for DIY Rc Car Toys Robotics and Truck, 12 AWG Wire, 1 Pack

8.9

ChoiceComparer.com Score

8.9

/ 10

Great

Main highlights

•New Upgrade Battery Adapter: Input voltage: 18V; Output voltage: 18V; Maximum current: 30A. In addition, it is equipped with 12WAG wires and terminals to meet your different usage needs
•With Switch & Indicator: It adopts the integrated design of switch and indicator light, which makes your operation more convenient, safe and controllable. In addition, battery adapter adopts ABS flame-retardant shell, as well as 12AWG wire, which is safer and suitable for most scenarios
•Multi-protection Function: Kzreect battery converter adapter has a built-in intelligent chip with over-current protection, short-circuit protection, low-voltage protection, over-discharge protection and other functions. Convenient to use, but also pay more attention to the protection of your battery and equipment
•Compatible with 18V Battery: Compatible battery models: 48-11-1820, 48-11-1828, 48-11-1835, 48-11-1837, 48-11-1850, etc. Kzreect battery adapters are high quality and fit snugly into the battery for easy installation and locking of the battery (Battery not included)
•Suitable for Various Scenarios: This Kzreect battery adapter has a maximum output current of 30A, which can turn the lithium battery into a mobile power source, you can use it freely both indoors and outdoors. It compatible with power wheel, remote control toys, work lights or robots to meet your various DIY needs
•NOTE: 1. When connecting external devices, please make sure the positive and negative poles are connected correctly; 2. This product is for output use only, do not connect the charger; 3. Please remove the battery when not in use

View offer on:

$13.99

Check Price

ZWDXRB

for Milwaukee 18V Battery Adapter Use for Dewalt 20V Power Tools,MIL18DL Converter for Dewalt Tool to for Milwaukee M18 18V Battery,Replace for DCB200 (Adapter Only)

8.8

ChoiceComparer.com Score

8.8

/ 10

Great

Main highlights

•【Function】The ML18DL adapter is compatible with Milwaukee 18V M18 batteries and provides power conversion for DEWALT 20V Max XR series cordless tools. When paired with your M18 battery, this tool battery adapter perfectly replaces for Dewalt 20V Max XR lithium-ion batteries: DCB180, DCB200, DCB205, DCB206, DCB606, DCB609, and more.
•【Structure Introduction】The top port of this for M18 battery converter is compatible with DCB200 20V cordless power tools. The bottom port of the converter is compatible for Milwauke M18 18v lithium batteries 48-11-1811, 48-11-1815, 48-11-1820, 48-11-1822, 48-11-1828, 48-11-1840, 48-11-1841, 48-11-1850, 48-11-1852, etc.
•【Expand Brand Line】This MIL18DL battery adapter converts for M18 18V Lithium battery to DCB200 20V lithium battery, perfect replacement for DCB200 20V lithium battery,which means you can use your old for m18 batteries to for dcb200 20v power tools,compatible for Dewalt 20v max drill/impact driver/impact wrench/screwdriver cordless tools. Save your money on new DCB200 20V battery.
•【Safe Protection】Solid design, ABS high quality material.This battery adapter can tightly lock the tool and battery together, will not loosen, will not slip off,High temperature resistance,Let you work with confidence
•【Product Advantages】Wide usage for Dewalt 20V Lithium-ion Battery power tool , If your DCB 20V Lithium-ion Battery stop working, use the adapter for Milwaukee 18V for M18 battery as power replacement.

View offer on:

$16.99

Check Price

ADPLIFE

Power Wheel Adapter Set for Milwauke 18V Battery with 14AWG Wire for Robotics, Work Lights, RC Trucks, and RC Toys

8.6

ChoiceComparer.com Score

8.6

/ 10

Good

Main highlights

•Compatibility with 18V Battery Series, including 48-11-1815, 48-11-1820, 48-11-1828, 48-11-1840, 48-11-1850, 48-11-1860, and more. Our battery adapter connector is precision-engineered for a secure fit onto your battery, ensuring easy installation and reliable locking. Crafted from robust ABS plastic, it boasts heat resistance and exceptional corrosion resistance, making it suitable for both indoor and outdoor applications.
•Versatile Application: The power wheel battery adapter boasts a robust 14-gauge wire configuration, capable of handling a maximum permissible current of 30A. This substantial power capacity empowers upgrades to a variety of devices such as power tools, ride-on toys, work lights, and DIY robotics projects. The comprehensive package encompasses 1 power wheel adapter with fuse holder, 3 30Amp fuses, 1 wiring terminal.
•User-Friendly Operation: Achieving ease of use is simple – just slide the power adapter into the designated groove and subsequently push the converter until it securely latches onto the battery. For removal, press down on the battery buckle before detaching the adapter. Additionally, the adapter features two screw holes designed for secure attachment to walls, machinery, or DIY projects.
•Key Considerations: It's essential to note that this converter functions solely as a power output and not as a charger, directly utilizing voltage and power from your battery. Proper wiring involves connecting the red wire to the positive terminal and the black wire to the negative terminal. During usage, ensure alignment between the device's positive and negative wires and those of the adapter. When not in use for extended periods, remember to detach the battery from the adapter.

View offer on:

$6.99

Check Price

ZWDXRB

ZWDXRB Battery Adapter for M18 to Work for M12 Tool Battery Adaptor,for DeWalt Tool and for Milwaukee Battery Adapter,Power for Milwaukee for M12 Tools

8.5

ChoiceComparer.com Score

8.5

/ 10

Good

Main highlights

•For M18 use for M12 Battery Adapter: Convert for M18 battery to work for M12 tools.
•For DeWalt Battery Adapter: The DM20M12 battery adapter is also compatible with DeWalt 20V 60V lithium battery, then convert for DeWalt battery to power your Milwaukee for M12 cordless tools.
•Conversion function:This DM18M12 adapter is for DeWalt 20V battery DCB180 DCB200 DCB205 DCB206 DCB606 DCB609 AND for Milwauke M18 48-11-1852 48-11-1840, 48-11-1815, 48-11-1820 48-59-1850 Lithium batteries to for Milwaukee 12 volt M12 Lithium-ion Battery.(NOTE: battery not included)
•Portable: this battery adapter is much lighter and smaller than battery, you can take it for business trip easily.
•Easy to use:Just insert this converter into battery, then insert it into power tools.18V or 20V to 12V Step down converter make your battery can work for 12V power tools.

View offer on:

$23.99

Check Price

📊

📈 How we rank

With our cutting-edge technology, we examine thousands of products and retailers, assessing reviews, ratings, trends, and sales rankings to identify what matters most to users like you.

Our team evaluates this data alongside genuine user feedback, merging AI analysis with human insights to provide you with real-time, highly-rated recommendations that empower your decision-making with clarity and confidence.