UNIVERSAL POWER COMPATIBILITY: This charger accepts input voltages from 100-240V and operates at a frequency of 50 Hz to 60 Hz, providing a versatile power source for different regions. ADJUSTABLE OUTPUT PARAMETERS: With an output voltage between 18V and 21V and a current of 1.2A, our charger can support a wide range of power tool batteries with capacities from 1.5AH to 6.0AH. COMPATIBILITY WITH MOWIS BRAND AND UNIVERSAL: Tailored for Mowis brand tools in the range of 18V to 21V, this charger is also compatible with most other brands within the same voltage range. However, you should check the product images before purchasing to confirm the interface dimensions and ensure they fit your specific power tool battery. INTUITIVE CHARGING INDICATORS: Experience hassle-free charging with clear indicators. A red light signals normal charging, while a green light indicates that the battery is fully charged or when the charger is plugged in. This provides visual cues for the charging process. IMPORTANT INTERFACE CHECK: If you are considering this charger for other brands, it is important to check the product images to confirm the battery interface dimensions. Incorrect sizes can lead to charging issues, so please ensure the correct interface size before purchasing.