12 volt system

Yes.

I f you have a Batt thats in good order i cant see why you wont have full power within 3hrs bud

As long as you don't have another battery isolator between the aux battery in the 4X4 and the camper.

Hi Goona

In the case where you are running acessories from both batteries , the drain on each battery will depend on the resistance in the leads to the accessories from each battery.

I.E. assume you have two batteries the same , one is close to the accessories and one is further away, say in the car.
Assume the wires used in both cases are the same thickness to the load (accessories).

Then one run is longer and has higher resistance and so not as much power will flow to the load from that battery.

In practise installations tend to have thicker wire from the more distant battery to minimze this effect - but its a good rule of thumb to assume that the more distant battery will supply less current , and will also take less when charging.

"Have a Ctek 7 amp charger in the camper connected to the camper battery and have an Anderson plug to a second battery"

(A) if the Anderson plug is connected and I plug into power will it charge both to full capacity ?
(B) if they are one WET and one GEL battery will they *both* charge to full capacity ?
(C) if i am running accessories from both (batteries) via Anderson plug will it drain BOTH EQUALLY (if *not* plugged into power) ?

Goona,
Answers (simplistic version)
a - YES (in time)
b - ?? are DIFFERENT CHARGE RATES required ??
c - NO (remember Gel & Wet have different charge and also discharge rates too)

Mainey . . .