pianotuna wrote:
Yes, it is normal.
The batteries need to be fully recharged. The sane way to do that is with shore power.
3 hours of driving won't be enough to fully recharge the battery bank.
Well ... maybe ! If you had a good DC-DC charger and your battery bank is not too large (? two 6V golf cart batteries).
12.2V is about 50% SOC. Discharging further could permanently damage your battery bank if discharged further.
pianotuna wrote:
Look into adding a modest solar system to recharge the battery bank in between trips.
EXCELLENT suggestion, especially if you like to boondock !