NEED PORTABLE BATTERY EXTENDER 3gs

[adammusic]

Going on vacation . have 3gs. Terrible battery life. Going to be out all day and don't want my phone dieing by 3 oclock. Whats the best portable battery extender on the market? HELP !

Why do Iphones have the worst worst worst batteries?

 

[Rayfire]

Try this one out, I still have mine and works fine.

It is originally called Imax power found on this thread.

 

[Nanook]

I've had a Filo P3 for a couple years, and I think it's the handiest of its kind on the market. It takes 2 AA batteries, works off of NiMH, has flip out prongs so is a self-contained charger. The down side is I only see it currently sold at one place, and have no experience with them: http://bestofferbuy.com/Fiio-P3-Por...ource=gbase&utm_medium=cse&utm_campaign=gbase

Of course you saw the other thread on page 1, too...? https://forums.macrumors.com/threads/1108467/