How long does a heated base layer last on a single charge?

When using a high-quality battery, such as the Milwaukee M12, the heated shirt can last 6 to 10 hours depending on the selected heating level. Lower settings extend runtime, while higher ones provide instant and intense warmth. If you work outdoors all day, having a spare battery is recommended.

Can the heated shirt be washed in a washing machine?

Yes, most modern models can be machine-washed if specified by the manufacturer. Always disconnect the battery and seal the connectors before washing to protect the electronics. Use a gentle cycle up to 30 °C and avoid tumble drying or ironing to preserve the heating fibers.

Is it safe to wear when sweating or in the rain?

Yes, the shirts feature insulated and water-resistant connections that prevent moisture from reaching the electronics. However, during heavy rain or prolonged exposure to water, it’s best to wear an additional outer layer for enhanced protection.

Can the heat level be adjusted while wearing it?

Absolutely. With the control button, you can easily select one of three to four heat levels while wearing it. The LED indicator shows the active mode, so you always know how warm the shirt is.

What batteries does it use and how is it charged?

It typically uses the Milwaukee M12 battery system, known for long runtime and fast charging. The battery can be recharged with a standard charger and replaced easily – simply insert it into the connector, and the shirt is ready to use.

Can I wear the heated shirt under a jacket?

Yes, the heated shirt is designed as a base layer that can be comfortably worn under a jacket, vest, or work overall. It provides warmth close to the body while the outer layer retains heat for maximum efficiency.