The AIRLUX is the lightest battery air pump ever at only 105 grams.  It also doubles as a light with 3 brightness settings.  170 litres per minute.  It is half the weight of an inflation bag, and a lot lighter than other battery inflators. Charges via USB cable (supplied). 1400mAh battery.   It isn't super fast but it does the job in about the same time as a bag.  Also useful for inflating air mattresses. It's fitted with a wee lanyard so it can be hung inside a tent.  We used it on a 5 day trip and it inflated the packraft, my air matteress each night and was OK to read by at night. All on a single charge.  You can take a power supply or solar charger.  Includes two nozzle adaptors and a USB cable.