While you can’t directly run Milwaukee M12 tools from a car battery, there are ways to power them using your vehicle’s electrical system. Let’s explore the options and why direct connection isn’t recommended.
Common accessories included with many inflators. Photo by Lemmy.
Why Direct Connection is a Bad Idea
Milwaukee M12 tools are designed for a 12V system, similar to a car battery. However, directly connecting them can damage both the tool and the battery. Here’s why:
- Voltage Fluctuations: Car batteries experience voltage spikes and drops, especially during starting. These fluctuations can overload the tool’s delicate electronics, causing irreparable damage.
- Amperage Requirements: M12 tools demand high amperage during operation. A car battery, while capable of delivering high current, is primarily designed for short bursts to start the engine. Sustained high current draw can overheat the battery and potentially damage it.
- Incompatible Power Delivery: Car batteries provide raw DC power. M12 tools require regulated and consistent power delivery for optimal performance and safety. Direct connection bypasses this crucial regulation, risking damage.
Digital display found on the M18 inflator allows for pre-set pressures and easy-to-read real-time feedback. Photo by Lemmy.
Powering M12 Tools with Your Car
Instead of direct connection, consider these safe and effective methods:
- Inverters: A power inverter converts your car’s 12V DC power into 120V AC, allowing you to use a standard M12 charger. Choose an inverter with sufficient wattage to handle the charger’s load.
- 12V Adapters: Some manufacturers offer 12V DC adapters specifically designed for powering tool battery chargers. These adapters plug into your car’s 12V outlet (cigarette lighter) and provide a more stable power source than direct battery connection.
- Portable Power Stations: These battery-powered units offer a versatile solution for powering M12 tools anywhere. Charge the power station at home or in your car, then use it to power your tools on the go. Many offer both AC and DC outlets.
The M18 inflator being used to inflate a trailer tire. Photo by Lemmy.
Choosing the Right Power Solution
The best option depends on your needs:
- Occasional Use: A 12V adapter or a smaller inverter might be sufficient for occasional use.
- Frequent Use: A larger inverter or a portable power station provides more reliable and sustained power for frequent use.
- Remote Locations: Portable power stations are ideal for remote locations without access to AC power.
Milwaukee M18 batteries are compatible with a wide range of tools, including this inflator. Photo by Lemmy.
Conclusion: Safety and Performance
While the temptation to directly connect your M12 tools to a car battery exists, it’s crucial to prioritize safety and tool longevity. Investing in a proper power solution ensures optimal performance and prevents costly damage. Utilizing an inverter, 12V adapter, or portable power station offers a safe and reliable way to harness your vehicle’s power for your M12 tools. Remember to always consult the manufacturer’s recommendations for your specific tools and chargers.
