Your question is not clear and very confusing. Please ask again and this time list make, model, and year of the mower your are referring to.
12 volt
With a 12 volt battery charger set to around 5 amps. Do not overcharge if it is not an automatic charger.
Only use 110-120 volt appliances on a 110 volt socket.
Typically they are either 220V or 110 volts not both. Plugging a 11o volt blanket to a 220 volt line has a huge risk of fire.
Hot, neutral and ground.
NO
Yes
17
no
Yes - usually house voltage varies from 110 to 120 volts.
115 Volt and a 110 Volt can be treated as the same thing. The electrical voltage supplied from your electric company is not exact and can be 120 Volt + or - 10%.
No adapter is needed, 110 and 115 volt are interchangeable.