Battery powered tool sets brands?

Hi! I'm looking into getting a few battery powered pieces of equipment for gardening client's who are more noise sensitive.

I've always used gas powered Stihl equipment along with everyone I know in the industry, so I'm just looking for insight on other options.

I'd consider any line that has a combi set with string trimmer attachment, hedge trimmer attachment, etc.

I'm obviously worried about battery life and cost of additional batteries, and how quickly the batteries last with heavy use.

Does anyone have a comparative experience between brands or industrial experience with battery powered sets?

Thanks in advance.