If you will be charging with a generator this is a good time to review your charging system. Many converters are fixed voltage trickle chargers and you really want a multi-stage converter that initially charges a low battery at 14.4+ volts.
The batteries need to be maintained between trips. Top issue is to get them fully charged and keep them fully charged for longest life and best performance. If you allow them to run down in storage they will begin to sulfate and may seem charged as you leave but will have lost some capacity.
The 12 Volt Side of Life
