I have an H5 EVercross, I swapped this seat (same as this video) with a seat that also had a backrest. Also added a very high quality headlight that mounts near top of bike as the light is pretty weak but only use it as backup for very dark areas, my scooters light died after 2 years of riding about 3 miles a day, battery is still strong. Upgrading to a new bike will be delayed until they make these a tad bit faster, say 40mph top speed if that ever happens
My view is don't sit on a seat made for a bicycle way too small. Bolt on a high back office or gaming chair you''ll never go back to a normal seat or standing again!!!
Several condos and apartments in the area have banned bringing e-scooters /e-bikes inside our unit, due to fire hazard. Also informed that your home insurance would not cover any damage caused due to e-scooter battery fire. My Segway Ninebot is certified to UL2272 standard. An inquiry to Segway on the fire risk issue only brought instructions on how to deal with a battery fire.