Calypso AB Mini Ultrasonic Wind Meter

Your phone will overheat in direct sun before the Calypso will. I've had no issues making it through back to back weekend matches on one charge.

Do use some sort of timer/reminder to prevent leaving it on the charging pad for more than 3 hours though.
Thanks. I was planning on setting it up on a 30 ft conex tower while engaging the mile plates from covered platform below. If I can get about 4.5 hours which is about what I get from camera battery in excessive heat, that will work. Thx for the heads up on charging pad.
 
Damn, my non ab mini will last near a week on one charge!

So to get accurate wind readings with lynked systems, you need to have the AB mini pointed damn near perfect north? Grid north? True north? So now you have to have a kestrel or compass to know what heading perfect north is? Be nice if the calypso had its own compass. Especially if it burns through an entire battery in one day.