Ummm... I seem to remember trying to ask this very same question a while back.
I got no useful input - only some heckler who thought highly of his own rambling nonsense.
But I digress.
Anyway... not ALL electrics have to have a cord dangling out the back, ya know.
There are also the electrics with built-in batteries - that then get recharged. No cord - except when on the charger.
I know of 2 models...
Black & Decker CMM1000
I was leaning towards the Neutron when I happened into an outlet mall Black & Decker refurbished store... and spotted the CMM1000.
I did some looking on the internet for reviews... they go 50-50 for likes vs. dislikes.
I bought it - it was about $200 refurbished. (I think.)
My lawn is not too large... (Hey! I live in a mobile home park, okay?) and I can crank through the lawn cutting in about 30 to 45 minutes of work.
The mower has enough 'juice' for 45 minutes to an hour - depending on how much I have let the grass grow.
It takes a good over-nighter to recharge the battery after it goes flat.
The noise from the mower is acceptable... my cat isn't even afraid of it - and I have to yell at him to get him to move outta my way sometimes.
I'm not sure about any technical specs... if you do a google on the model - you should be able to learn more.
Feel free to quiz me if you want any more 'hands on' details on how it works.
It's basically an on-off switch - and Varoooooom - and away you go.
P.S. I like it.
P.P.S. In some cities - you may qualify for a rebate from the city - if you purchase an electric mower - and can show them a 'proof of purchase'. Here it is about $40 - 80 dollars.