Best battery booster for iPhone 5s

[Alex75]

Hi, I'm going out with a group to watch the TdF on Monday. It's going to be an all dayer.
I use the Strava app and Wahoo app on my phone at the same time which of course uses a lot of battery. On a 3hr ride it's not too much of a problem, but obviously it will be on Monday. Plus I want to use my phone to take photos and vids of the tour when it comes past.
Any recommendations on which battery boost pack I should get?
Many thanks in advance.
Alex

 

[Cold]

I have this for when I do long distance walks get nearly 4 full charges out of it.

http://www.amazon.co.uk/10000mAh-Po...?ie=UTF8&qid=1404206128&sr=8-3&keywords=anker

 

[KneesUp]

From the description of the above:

"10000mAh of capacity. Charges all iPhone four to five times, a Galaxy S3 thrice, or an iPad / iPad 2 once."

People should use the word 'thrice' more often

 

[BRounsley]

This is very expensive for the capacity but if you want to mount the phone (and therefore the battery) on the bike this is really handy. I have it and it works well.

“Topeak Mobile PowerPack 5200mAh”

http://www.evanscycles.com/products/topeak/mobile-powerpack-5200mah-ec049352

 

[albion]

...On a 3hr ride it's not too much of a problem, but obviously it will be on Monday. Plus I want to use my phone to take photos and vids of the tour when it comes past.
..

Check Aldi to see if they have any left. They have their rugged 7000 plus a 10,000 one. Likely you want the rugged.

Maybe all gone though.

 

[JoeyB]

+1 for the Anker

I have one and it doesn't let me down.