Extending life of Gopro battery for timelapse

[Rupie]

I want to extend the life of my Gopro3, to record a timelapse, longer than the usual battery. There are a number of usb devices on the internet but I wanted to ask what results anyone had achieved. It is for cycling so weight is important, I want to record a ride of about 7hrs. What experiences have other people had ?

 

[Mr Haematocrit]

I take two batteries with me, small light and convenient.. Most of the after market options are substantially larger

 

[sabian92]

Don't use a Go Pro as they're renowned for having the worst battery life of all the helmet cams that are worth buying.

Other than that, buy spare batteries and change on the go?

 

[Rupie]

I already have a gopro, used for work, I wanted an option to avoid changing batteries.

 

[Shut Up Legs]

Even with the GoPro Hero3's Battery Bacpac add-on, you still won't get more than about 3 hours recording. As @sabian92 said, GoPro's approach has always been "pack on heaps of features at the expense of battery life". I have the Hero (original) and the Hero3 and the latter has shorter battery life!

 

[SatNavSaysStraightOn]

Don't know what you are thinking weight wise but we have a powergorilla which we used on tour to charge anything from USB. It is excellent. There is a smaller version called a powermonkey which might meet your requirements. They are not exactly cheap, but they are stunningly good. Just google the names (without spaces) and you will find what I mean.

 

[Rupie]

Its about the balance between weight and amphours, thanks