It all depends what you're doing. For a weather station you could do very well and have very low power at one reading per minute. HTTP is great for that. Also

It all depends what you're doing. For a weather station you could do very well and have very low power at one reading per minute. HTTP is great for that. Also your approximation is off. I'm under 200ms (closer to 110) per insert, end to end. That's before any optimizations.