Greenworks G-Max 40-Volt-2.0Ah Lithium-Ion Cordless Leaf Blower

Art,

If you are talking about run time, you are looking at about 55-70 minutes depending on your speed setting.

If you are asking about storing the battery after it has been fully charge, the manufacturer says about 3 - 4 weeks without any true drop of power.

Ruth,

The only cordless model I see that comes near that air speed is the cordless blower from Earthwise:

Earthwise BVM21010

This blower when used on high, comes in at 225 MPH exactly.

Beret,

The answer is a resounding yes to both. The Greenworks 24252 requires you to separately charge the battery in the charger that ships in the same box.

Mary,

I agree with you that the levels of noise is very important when choosing a leaf blower. It is unfortunate that the manufacturers of some products do not feel the same way.

There is no mandatory sound level testing required to produce a leaf blower, so you won't see any uniform testing requirements. If you do see any Db listing, understand that they may be taking the measurement from wherever they choose and that noise level may not match the noise level you need to achieve form your perspective.

Greenworks does not list the dB level of any of their products.