External battery packs

[razer]

Hi.
Just a quick question ,do you use these along side or instead off the batteries in your flash.

 

[blazzar]

For the canon one I have you use it as well as the batteries.

 

[Flash In The Pan]

Along side, so with the likes of the Pixel ones you'll need 12 batteries in total.....

 

[kiteninja]

Along side, so with the likes of the Pixel ones you'll need 12 batteries in total.....

But man does it recharge fast