I have travel trailer and it has car battery installed near the hitch to power the power inverter to provide A?

I have travel trailer and it has car battery installed near the hitch to power the power inverter to provide AC power inside the trailer. question is how can the battery be charged when it is depleted? how can it be connected to my SUV's alternator to have it charged?I have travel trailer and it has car battery installed near the hitch to power the power inverter to provide A?
some trailers have a seven wire plug that can also be set up to charge the battery while you are going down the road. the problem is, you need a heavy duty alternator to make this work on a long term basis. Talk to either a U haul dealer who you can pay to wire this up with a universal plug, or do what I did , I just took my battery charger with me on the road, and when I got to an RV park I plugged the trailer in , then plugged the charger into the outside plug and put it on 2 am charge and charged the rv battery overnight. RV stores,and places like wal mart sell plastic battery boxes with covers and straps. You protect the battery from all types of weather, and I could put the charger under the trailer if it was raining and still charge it slow overnight if necessary.I have travel trailer and it has car battery installed near the hitch to power the power inverter to provide A?
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it should be normally wired thru your light wiring to accept an charge....

if not you can precharge it with an battery charger then when your camping you can hook it to your ride with jumper cables and recharge it. Also check if it has an cord that you can plug into the trailer it may be wired up to provide power to the battery for you.

have fun