Best Lithium-Ion Power Tool Battery Converters of 2026

The VELATEMOR Battery Adapter is a handy tool designed to help you connect 18V lithium-ion batteries with different brands of power tools, so you don’t have to buy new batteries. It also lets you charge your 18V battery directly through a charger, making the charging process simpler and saving you from carrying multiple chargers. Its compact and lightweight design makes it easy to carry around or store in your toolbox, whether you’re working at home or on a job site. Plus, it’s easy to use, helping you work more efficiently by reducing downtime caused by incompatible tools.

The Garosa B4 Battery Adapter makes your lithium ion batteries more useful by allowing you to use them with different power tools. It helps you get the most out of your batteries by improving how well your tools perform, giving you more power to finish your tasks quickly and smoothly. Installing the adapter is simple—just press a button to insert the battery and connect it to your tool, so you can start working right away. Plus, it easily converts your battery to fit a variety of tools, making your equipment more flexible and convenient to use.

The VELATEMOR 18V Battery Adapter makes it easy for you to use 18V lithium-ion batteries with your power tools, ensuring a secure and reliable fit. It also doubles as a charger, so you don’t have to buy extra charging equipment, saving you time and money. Installation is straightforward—just slide your battery into the adapter and connect it to your tool, simplifying your workflow. Plus, its compact and lightweight design means it won’t weigh down your tools or get in your way, even when you’re working in tight spaces. This adapter is a handy addition to your toolkit for convenience and flexibility.

The Pongnas 18V Battery Adapter is a lightweight and portable tool made from durable ABS plastic, making it easy for you to carry it around whether you're working at home or on a construction site. It allows direct charging of 18V lithium-ion batteries, simplifying your charging routine by reducing the number of devices you need. This adapter also helps you switch between different brands of power tools quickly, minimizing downtime and improving your work efficiency. Plus, it connects a variety of 18V lithium-ion batteries to tools from different brands, saving you money by eliminating the need to buy new batteries for each tool.

The HanOaki Battery Adapter helps you lighten your handheld power tools by moving the battery away from the tool itself, making your tools easier to handle and control during work. It fits well with 18V and 21V lithium-ion batteries from multiple brands, giving you flexibility with your existing batteries. Made from strong ABS material, this adapter is built to last and easy to carry around wherever you need it. Plus, it features a patented design, showing that it’s been carefully engineered to deliver reliable and efficient performance for your power tools.

The FTVOGUE Battery Adapter is designed to work with various P series battery packs, including One+, P743, PSK005, PBP2003, and P107 models. It offers a low voltage output through its DC head interface, making it perfect for connecting your DIY tools and toys safely. The adapter ensures a secure fit with your battery, preventing it from falling off or shaking during use, which means you can work without interruptions or worries. This stable connection helps you get consistent power for your tools, enhancing your overall experience and convenience.

The Azocek Battery Adapter is a versatile tool that allows you to easily convert Dewalt 20V Lithium-ion batteries for use with Dewalt 18V tools. It also works seamlessly with Milwaukee M18 18V batteries, giving you the flexibility to power a wide range of equipment. This adapter is designed to support various Dewalt 18V models, making it an ideal replacement for older batteries. Additionally, it features a USB output port, enabling you to charge your electronic devices on the go. With this adapter, you can maximize the utility of your existing battery collection.

The Noteflora Battery Adapter is designed to connect your 48-11-1828, 48-11-1815, and similar lithium-ion batteries to Power X-Change 18V tools, ensuring a secure and steady connection during demanding tasks. Its durable plastic build makes it tough enough to handle workshop environments while staying compact and easy to store. You’ll find it simple to attach and remove, thanks to its user-friendly design that prevents slipping or accidental disconnections while you work. Plus, it includes a protective plate that helps keep your battery healthy during longer breaks, so you can get the best performance over time by detaching the battery when not in use.

The EVGATSAUTO 18V Battery Adapter is designed for easy and quick installation, making it a convenient addition to your toolbox or workbench without taking up much space. Its compact design is perfect for users who want a hassle-free setup. The adapter features a smooth, edge-free design to protect both your lithium batteries and power tools from damage during use, ensuring safety and longevity. Made from tough ABS plastic, this adapter is durable and resistant to wear and scratches, so it can handle regular use. It’s a versatile accessory that lets you connect your 18V lithium battery to a variety of power tools, giving you more flexibility in your projects.

The FILFEEL 18V Power Adapter is a handy device that combines a battery adapter and charger in one, making charging simpler and cutting down on extra gadgets you need. Its compact and lightweight design means you can easily carry it around whether you're working at home or on a construction site. Made from durable ABS plastic, it’s built to handle tough conditions while keeping your tools safe with protection against overcharging and short circuits. Plus, it lets you connect your 18V lithium-ion battery to many different brands of power tools, so you don’t have to buy new batteries for each one. This adapter helps you save time, money, and effort.