Segway continues to expand beyond the personal mobility devices that made it famous. Now owned by Segway-Ninebot, following a 2015 acquisition, the brand announced an upgraded version of its boundary-wire-free robot lawn mower, along with new backup power solutions at CES on Tuesday. Segway Navimower i-series robot lawn mowersSegway says 30,000 of its current robot mower, the Navimow H series, are mowing lawns today, despite that model not being available in the U.S. If you’re thinking that’s a low number for a consumer product, know that robot mowers are much less common than other household …