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will 12v makita batteries charge on 18volt charger

Title: Compatibility of 12V Makita Batteries with an 18V Charger


In today’s rapidly advancing world, power tools have become an indispensable part of our lives. Makita, a renowned brand known for its high-quality power tools, offers a wide range of batteries to power their devices. However, one common question that arises is whether the 12V Makita batteries can be charged using an 18V charger. In this article, we shall explore this compatibility issue and shed light on the factors to consider.

1. Understanding Makita Battery Compatibility:

Makita batteries are specifically designed to power Makita’s range of power tools. They come in different voltages, including 12V and 18V. It is crucial to note that Makita’s 12V and 18V power tools have dedicated battery platforms designed specifically for each voltage range. As a result, the batteries are not directly interchangeable between the two platforms.

2. Compatibility Factors:

a) Voltage Difference: The primary concern when charging a 12V Makita battery with an 18V charger is the voltage difference. Makita 12V batteries have a lower voltage rating than the 18V charger. Although some electronic devices may support a degree of voltage tolerance, it is not recommended to charge a 12V battery with an 18V charger. The higher voltage output can damage the battery, decreasing its performance and potentially posing a safety risk.

b) Battery Communication: Makita batteries are equipped with a communication system that allows them to communicate their status with the charger. This system ensures optimal charging and protects the battery from overcharging or overheating. However, the 12V batteries do not have the necessary circuitry to communicate with an 18V charger. Hence, charging them with an 18V charger may lead to inaccurate or even unsafe charging.

3. Ensuring Proper Charging:

To ensure the longevity and performance of your Makita batteries, it is essential to follow the recommended charging guidelines. Here are a few key points to consider:

a) Use Genuine Makita Chargers: Makita provides dedicated chargers for each voltage range. It is crucial to use the appropriate charger that corresponds to your battery’s voltage. This helps ensure the proper charging protocols are followed, maximizing battery life and performance.

b) Avoid Mixing Voltages: To avoid compatibility issues, it is wise to stick to the designated battery platform for your Makita power tools. If you own both 12V and 18V power tools, it is advisable to maintain separate sets of batteries and chargers for each platform.

c) Check Battery and Charger Compatibility: Before purchasing a new battery or charger, always check for compatibility with your specific power tool model. Makita offers a wide range of batteries and chargers, so it is crucial to choose the correct ones for your needs.


In conclusion, charging a 12V Makita battery with an 18V charger is not recommended due to the voltage difference and the lack of communication compatibility. Using the correct charger and maintaining separate battery platforms for different voltage ranges helps ensure optimal performance and prolongs the lifespan of your Makita batteries. By following the recommended charging guidelines, you can enjoy the reliability and efficiency that Makita power tools are known for.

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