We have the Duracell 600 Power pack. It's a similar animal, but does not actually have an air compressor on board, which would be handy, since we carry a separate compressor too. It's a 28aH AGM battery so we liked that it can handle vibration and won't spill and can jump start a V8.
http://www.amazon.com/Duracell-DPP-6.../dp/B000TKHMWK

For a charger/trickle charger for our AGM batteries we got a CTEK 7002. It's highly recommended for AGM batteries.
http://www.amazon.com/CTEK-Multi-700...5&sr=1-2-fkmr0