Even my conservative, 92-year-old dad switched to a battery mower for the hand mower. He loves it.
But he says he still feels that electric leaf blowers, pressure washers and ride-on mowers are inferior to gas.
I want a good electric pressure washer. The one neighbor has tried five. All of them died. I don't think it's a question of the electricity so much as the electrics just not being professional grade.
And you just can't get the pressure I think. A 5hp motor is 3700 watts. Your standard outlet has a 20-amp breaker, so that means you max at 2400 watts, but realistically about 2000 watts before you trip the breaker constantly. So to equal a gas pressure washer, you need an outlet wired for 240, which usually we North Americans do not have on the exterior, which means that you have to run a 5000-watt portable generator to run your 3700-watt electric pressure washer equal to a gas one.
With, let's say, 37-volt DC, you would need to run at 100amps. That means on one of my 2.5KWh 60-pound Simpliphi batteries, you would get about 40 minutes of use. So with a 12-pound battery you would get 8 minutes.
Not sure of all my math there... but I think that's the issue in general with changing over a 5hp device to an electric, either battery or plug-in.