Once again, we have been supported by the extremely generous @voltaicsystems. We will be using the latest V88 Laptop Battery (boasting 24,000 mAh/88 Wh) to power our electrical equipment. We will be relying upon the performance of the latest lightweight foldable solar panels to charge a multitude of camera, video, drone and flashgun batteries in Greenland this summer (August). So far, we are very impressed! Many many thanks Voltaic Systems!