In general, you can start considering e-bikes for kids once they're over the age of 10. Sometime around the start of middle school seems to be the sweet spot. Remember that e-bikes are heavier than analog bikes, so kids will need to have a certain strength level. Can they pick the bike up if it falls over? Can they push it up the stairs if they need to? Can they help put it in the car or bike rack?
Like a lot of things with kids, there is no hard-and-fast rule for when they might be ready for an e-bike. Some kids will be ready at 10, some at 14. Don't rush it. The goal here is to keep in fun.
Electric bikes for kids vary in speed depending on their specific model and design. Typically, electric bikes for kids have a top speed of around 15 to 20 miles per hour (24 to 32 kilometers per hour). However, it's important to note that the speed of an electric bike for kids can be limited or adjusted through parental controls or the bike's settings to ensure safe riding conditions for children. Additionally, factors such as the weight of the rider and terrain can also affect the speed of an electric bike for kids.