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From Fellrnr.com, Running tips
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Here's the PulsePak plugged into the dock while being worn. I've not had a problem with the battery sticking out. You could use a micro-USB extension cable and tuck the battery into the wristband of the watch, but I preferred this simpler approach.
[[File:Charge On The Run - Fenix3 (5).jpg|center|thumb|300px|]]
I find it's a little more comfortable worn over a wrist band. The thickness of the wristband combined with the thickness of the dock does make the watch feel a little more cumbersome, but . ==Recharge Time==I found I was boosting did some analysis to see how long it takes to charge the Fenix 3 when it's recording. The figures below are the battery charge by about time from completely depleted. {| class="wikitable" style="margin-left: auto; margin-right: auto; border: none;"! Time (minutes)! Percent Charged|-| 15| 10%|-| 26| 20%|-| 39| 30%|-| 53| 40%|-| 55| 50% in half an hour, so you shouldn't be wearing it for an extended period.|-| 77| 60%|-| 90| 70%|-| 103| 80%|-| 115| 90%|-| 138| 100%|}
=Garmin Epix=
While the [[Garmin Epix]] has been rather abandoned by my Garmin, with no firmware updates to fix bugs, it remains a high functioning watch at a price that starting to decline. The Garmin Epix has its charging port on the side, and the cable just clips in. You can see the standard table cable below, along with an aftermarket adapter. (The yellow cable tie is just a marker so that I can find where the watch is plugged in when I've got lots of them on charge at the same time.)
[[File:Charge On The Run Epix (1).jpg|center|thumb|300px|The standard charging cable that comes with the Garmin Epix.]]
As with most other watches, you can wrap the long cable around your arm and hold the battery in your hand, though this is a little cumbersome.
[[File:Charge On The Run Ambit.jpg|center|thumb|300px|]]
=Garmin Vivoactive=
The [[Garmin Vivoactive]] is not an obvious choice for ultrarunning has its battery life is only 10 hours. I've included it here because it's a very small watch with a lot of functionality for a very low price, and it charges on the run fairly well. It only holds about 200 mAh, so it doesn't take much to fully charge it, though it seems to charge rather slowly. The charging cradle sits nicely under the watch body, and is attached magnetically, though this is immaterial as it's held in place when you're wearing it.
[[File:Charge On The Run 22.jpg|center|thumb|300px|The Vivoactive, it's factory standard charger with the built-in cable, and an aftermarket adapter.]]
If you use the factory cable that comes with the watch you'll have to wrap the cable around your arm a little, but this works reasonably well. You should wear the watch on your right wrist, so the cable goes up your arm rather than against your hand, though the cable is flexible enough that wearing it on the left is not much of a problem.
|[[File:Charge On The Run 10.jpg|none|thumb|300px|]]
|[[File:Charge On The Run 24.jpg|none|thumb|300px|]]
|[[File:Charge On The Run 17.jpg|none|thumb|300px|]]
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Another approach is to use the aftermarket charging adapter with a short USB extension cable and hold the small battery pack in your hand. This works okay, but I'm not a fan of holding anything if I can avoid it. (Note that you have to have a micro-USB extension cable, not a standard male to male cable. I got this three pack of extension cables and used the shortest <jfs id="B016Q5FK8E" noreferb="true"/>.)
|[[File:Charge On The Run 25.jpg|none|thumb|300px|]]
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==Recharge Time==
Charging the Vivoactive while recording, it takes about two hours to go from empty to fully recharged. The recharge rate is fairly even, with each 25% taking about 30 minutes.
