Originally Posted by
datlas
Have you noticed how much of a drain it is on your computer battery? That's my one concern, the Garmin 130 has a pretty piss-poor battery life and if this think is a huge drain that may be a bigger problem. I know it has to drain the battery some, obv.
It doesn't affect the battery life of my Wahoo at all. I think that the problem with Garmin units was linked to the backlight - it would kick the light on when a vehicle was being tracked. Not sure if that's all been addressed via firmware.
As far as 510 vs 515 - I don't think that you can go wrong as long as you get one.