Extra juice for an iPhone 4s

jcrofts

Hi,

Probably not a touring question per se, but I reckon you're probably the people who will know most about this...

I'm mostly a commuter doing about 10km a trip. I'm a sucker for gadgets and wear a blue-tooth heart-rate monitor hooked into Runkeeper on my iPhone for GPS tracking and 'workout' details.

In September I'll be doing a 6 hour ride. I'd like to use Runkeeper but I reckon that's a little more than double my phone's juice. What would you suggest I use to extend it? I don't really want to fit a hub dynamo that I might only use a couple of times a year (but am willing to if that's really the best option). On the other hand, day trips on the bike in the near future are a real probability so a little more than an extra hour from a battery pack is needed.

Thanks in advance,

Joe

martinperry

http://www.veho-uk.com/main/shop_detail ... rticle=124
Brilliant piece of kit

englander

In a similar vein to martinperry, I have one of these: http://www.amazon.co.uk/gp/product/B00A ... UTF8&psc=1 You can pick your desired battery size and the price changes accordingly.

It's about to get it's first proper use on Monday when I begin my 3 day trip. I would be charging things up in the evening at the campsites, I think if you were to use it on the go you might have to conjure up some sort of electrical tape based mount.