Carol2925

I currently have three B&D power tools that are run by 18volt batteries. I bought two new batteries recently and when fully charged, they lasted approximately 15 minutes. I have heard that with an adapter I could use a lithium 20volt with these tools instead of getting brand new ones. The model numbers of the three tools are NSW18 leaf blower, NST2018 Type 2 Grass Hog, and NHT2218 Type 1 hedge trimmer. I would appreciate some advice.