External battery option for Garmin Edge 305?

[flanagaj]

Hi,

Planning on doing a 3 day trip soon and won't have the option of being able to recharge my Garmin Edge 305 whilst I am on the trail and was wondering what external battery options are available.

I have seen external battery packs that use disposable / rechargeable batteries and was thinking that might be my best bet.  If you have used something along these lines can you ping me a link as I am unsure what to buy.

Thanks

[sfuller]

If it were me, I'd look at one of the many lithium external battery packs on the market. Search for "battery pack" on Amazon and you will find a ton of them. One full charge on one of the medium size ones should easily allow you to recharge your Garmin over the course of 3 days.

Something like this would be good - http://www.amazon.com/PowerGen-PGMPP8400-8400mAh-External-Battery/dp/B0073F92OK/ref=sr_1_8?ie=UTF8&qid=1362015161&sr=8-8&keywords=battery+pack