Originally Posted by
bbbean
I have a Garmin 510. Live tracking with the Garmin uses fraction of the cell phone battery that Map My Ride/Strava/Endomodo et al do, because the phone isn't having to simultaneously transmit, locate, and map. It's just transmitting coordinates from the 510.
Glympse only periodically transmits coordinates which it gets from the phone's GPS, and it's not using power communicating with a Garmin via bluetooth. It's a small battery drain so far in my experience. MMR, Strava, etc may well have higher power drain as they do much more that what Glympse does.