Festival Time in Switzerland. No generators allowed. How to keep all the iPhones, iPads, watch, GoPros and flipMinoHD alive. OK, the 2nd batterie in the VW California Beach with 84Ah should feed a lot. But it should only be the last possibility.
So additional to the small 1time power banks I bought 2 bigger ones.
1 Anker Astro 20800mAh Powerbank
1 Amazon basics 10000mAh Powerbank
Sound only will come from the 2 small IonAudio Roadrockers. No Roadblocker or Tailgater this time.
update: The 2 Powerbanks lastet the whole 4 Festival days and beyond charging a iPhone 5c & 6 and the Apple watch.
More about the VW California Beach at festivals on my youtube channel.