Is the 12 volt outlet tied into the battery pack so that it could be used for an extensive period of time without causing damage so long as the amps are kept within limit and you do not run down the battery pack? For instance, say you are at a nearby weekend cabin without electricity and you want to run a low amperage radio from the 12 volt socket. Assuming you watch the battery pack charge level and maintain it high enough to comfortably get back to a recharge location, would you be causing any problem? The manual specifies the maximum amps that can be drawn from the 12 volt connection, but I have seen no mention of the maximum watts (or kilowatts) that can be safely drawn.