My mom wants an electric lawn mower. Any reccomendations?

Well I've had my Toro Personal Pace mower for 10 years now, still starts on the first pull and only 2-3 pulls after sitting all winter. My wife does have problems pulling it though as she has weak wrists. I change the oil every year and the spark plug every 3-4 years but never see anything wrong with the old one. I really like the personal pace feature and guess I am one who will keep using it until I die...
I remember the "TORO" were the first and may be the only 2 cycle mower, I had one. I also had one of the first Battery mowers, made by Black and Decker. I was their ginny pig, before it went to market. I believe it was back around 1985. It worked great for a small yard that was cared for. I understand the B&D goes by another name now.