Well, I pulled the plug a day early on hunting, so this is for an 8 day trip.
-Battery is currently at 63% starting at full charge at the beginning of the trip. No charge during.
- Total messages sent and received - 71
- Messages sent - roughly 35
- Check ins sent - about 16
- Tracking Interval - 30 min
- Tracking Usage, turned on for about 14 hrs per day, off at night. So it was probably 112 total hours of tracking.
- Bluetooth connection to phone - I used this for all messages I sent. Not for check ins. If sending a few with my wife in th evenning and waiting for a reply, I'd leave it on for an hourish. Otherwise, I had the BT on the device turned off.
- Terrain - mix of high altitude wide open mountains and high altitude dense tree cover. It was a pretty good mix, maybe 50/50.
Weather - lows overnight of 15-20F and highs during the day of 55-60. Generally clear skies with spotty clouds the first 5 days. The device was stored in ambient the whole time rarely did I put it in a pocket in my pants and that was to keep it in Bluetooth range of my phone while going to filter water at camp in the evening.
- Time to send messages - it seemed to always send within a few minutes, even I'm the woods. At least, the "message sent" time was always within a few minutes. The message check function it automatically does when sending a message or during the tracking point interval seemed to take a little longer in the woods or in my tent, but never 10 minutes. Generally 5-7 minutes at most.
-Spot X communication - I have a spot X that my buddy used. I sent him a message that he received and then sent a reply back. In about 45 minutes. Although, the first message I attempted to send him when we were in town never seemed to go through. It had the location share option turned on and I thought maybe that the type of information being sent wasn't compatible with spot X, but when I sent that I believe he had it in his house trying to receive it and it he message may have expired before he got into the mountains and used it. The second test that worked had the location sharing off. So, you may want to test this before relying on communication with a spotx user with your messenger.
- messaging on device. I sent a couple of messages with the device and yes, it sucked. But, I wouldn't hesitate to send a couple messages a day if my phone broke. The buttons on the device are a little stiff, which I think is probably a combo of them being small with a sturdy rubber cover. This is annoying for messaging, but otherwise just something I noticed and wasn't much of a bother.
- trackback feature - I forgot to use it.
- weather forecast - forgot to use it.
If the only thing different about the mini2 is the screen, the onscreen compass, and the small topo map you get with the trackback feature, I'm a huge pass on that device due to much less battery life and being more expensive.
Garmin's estimate for battery life is up to 23 days for a message or point sent every 30 minutes in moderate tree cover. I would say I was in moderate tree cover overall; a mix of wide open skies and heavy trees.
My usage changed over the 8 days. The first 4.5 days I only sent a couple messages a day and the battery was at 89% after those 4.5 days. After I started sending a lot more messages the last few days and also left the Bluetooth on the device (but not phone) on for several hours by forgetting to turn it off, then it started dropping faster. So, I believe that if you're only going to send a couple messages a day, a few checkins a day, and have it on 30mim tracking, you'd still be above 75% after 8 days.
Review of my homemade mounting device: the Velcro on the back in of the tracker stuck just fine. No no issues with the adhesive failing. The Velcro double side strap on the shoulder strap of my pack stayed out where I wanted it. The bond between the two velcros seemed to be plenty adequate. I would sometimes knock it off when taking my pack off, but it held plenty well hiking around, tossing my pack on the ground, and raking the top of it through brush when stalking. It wasn't so well bonded that it was annoyingly loud to remove in quiet woods, which I often find the case with Velcro. The reason is due to the shape of the back of the tracker (a little concave rectangle area) and the shape and width of the shoulder strap Velcro (a little narrower then the Velcro on the tracker and a little narrower than the concave tracker edges). The cheapo retractable lanyard was awesome. I'm going to get a other from work for my rangefinder.
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Sometimes in the thick stuff, sometimes not.
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