External Battery pack for Sunnto Ambit 3

It must recharge with USB?

How many mAH is the battery?

Multiply by 3 since you want to recharge 3 times, and multiple by 2 for inefficiency and get a battery pack with greater than that capacity

If your battery is 500 mAH, for example, you want a battery pack that has at least a 3000 mAH battery.

I got an Anker from amazon.com that's worked okay. Several other people same.

I have one of these and it works perfectly, also can serve as your backup life source.

http://www.amazon.com/Powerful-Portable-RAVPower-Technology-Lightning/dp/B00MQSMEEE

I haven't used the GPS on my Ambit 3 yet, is that the reason for the limited battery life you are estimating?

Thank you for the comments.

I haven't been able to find the specs for the battery size in the Ambit 3. I found that the Ambit 2 has a 480 mah so I imagine the 3 would be in the same neighborhood. I am doing an off trail Wind River trip and would like to keep GPS on at the lowest battery consumption level to track the route we take. I also like having all the other information you get by hiking with GPS activated.

I am not sure how much battery drain I will encounter but I want to be sure I get the whole trip. It seems like something around 3000 mah would be sufficient.

when is your trip?

August 15-23

480, 500, good guess? : )

http://www.amazon.com/iXCC-3200mAH-Power-Bank-Portable/dp/B00VKVMVL4/ref=sr_1_19?ie=UTF8&qid=1438740254&sr=8-19&keywords=usb+battery+pack

3200 mAh for $12 if you have prime

Jerry,

I thought you knew the battery size. Definitely a good guess. Thanks for the link.

Once you get one if you don't mind I would love to know how it works out for you James.
I'm not in immediate need but I have an Ambit 3 and like you for use on multiple day treks am searching for a good battery solution.

cheers

Ito,

Sure thing. I will let you know my thoughts when I get back from the trip.