Just want to quickly share my setup for in the field charging. I'm using Progressive RC's The Caged Threat power supply and charger combo which consist of the 48v 2000w iCharger 4010Duo and Mean Well RSP 2000w 48v power supply in a custom case. This is powered in the field by a Yamaha ef2000is generator which is rated at 1600w constant 2000w peak. This is a very powerful compact setup! The generator only weighs 40lbs and is extremely quiet and efficient. In the field i'm able to run it for 9 hours while only using a half tank of gas. I can charge two 6s/10k mah packs at 4c each or six 6s 10k mah packs at 1.5c each.