When you plan for a lower power draw over a longer period of time, this lightweight, highly mobile power supply gives you a 10 amp Lithium power supply with up to 300 W of peak surge power and 150W continuous AC power, and up to 15 amps of DC power for lighting, charging, and small AC/DC appliance needs.  The lithium battery cuts the weight of this power supply to a fraction of the AGM-VLRA battery weight. It can hold it's charge for up to a year without assistance, and has superior operational abilities in freezing orsub-freezing temperatures.
 
The PowerPort 112L has 3 charging options:  a USB 2.1A port, a single AC outlet, and a single DC cigar outlet. Comes with a 1Amp automatic lithium battery charger, and a sturdy heavy-duty nylon padded case for protection and portability. 
 
For heavier usage, a 3-amp automatic lithium Fast Charger is also optional for fast recovery.