Hello Monsy.
Thank you for choosing Greenworks Tools for your lawn care needs.
Blowers are considered a high-power draw application which means they do tend to drain the battery quite rapidly in comparison to some other tools. The runtime of a Greenworks cordless blower battery is primarily affected by the battery's amp-hour (Ah) rating, which determines how much charge it can hold, meaning a higher Ah rating leads to longer runtime; additionally, factors like the blower's power setting, the amount of debris being moved, ambient temperature, and the battery's condition can also impact its runtime.
We have designed Greenworks product lines to have a range of batteries that can be used with the tools in that same voltage. This unit can be used with Greenworks 24v 5Ah to 24v 2Ah. The only issues you may experience using a heavier battery is the added weight to the unit which may not be as comfortable to handle as a smaller battery.
Follow the link shared to view Greenworks 24v battery platform.
https://www.greenworkstools.com/collections/24-volt?uff_knr5hq_productType=Battery
Hope this information helpful. If you require any additional support or have questions regarding a product, we recommend try our Q&A section on product's page or Chat with us direct on our website www.greenworkstools.com.