[villagetinker]

While I love the idea of battery powered (aka quiet) lawn equipment, there are practical items to consider:
1. I would guess the average lawn trimmer, and weed blower used for 8 to 10 hours a day would go through several battery packs per day. Storage, recharging, replacing bad or weak packs, etc. will probably be a big problem.
2. Lawn mowers, both large and small would have similar problems, except these batteries are much larger, and harder to change out, more down time, etc.

I am guessing a hybrid model could work here, smaller items could go to battery, and improved mufflers, and SOME additional pollution controls for the larger equipment could be a workable solution. This could be handled with the contracts for landscaping without a lot of new laws, HOWEVER there will also probably be an associated cost increase.