How can I use my towing car to charge the battery in my small tent trailer?

Can I fuse and tap into the 12 Volts from the battery? The alternator is tied to the battery, so will it be enough to charge the car's and trailer's battery?How can I use my towing car to charge the battery in my small tent trailer?You can tap into your towing car's power supply, and it can usually supply enough power to charge an extra battery. If you do most of your driving at night, your headlights may increase the drain on your alternator and cause you problems.How can I use my towing car to charge the battery in my small tent trailer?I would be affraid burning out an alternator. my wife's prism (corrolla twin) burnt out two alternators due to dead cells in batteries. $150 a pop for rebuilt alternator, me changing them out.How can I use my towing car to charge the battery in my small tent trailer?You need to install a dual battery system. If you attempt this without the proper components, you will burn the diode out in your alternator, as it will detect the extra current draw as a short. If you install a dual battery system, your alternator will keep both batteries fully charged and ready to go.How can I use my towing car to charge the battery in my small tent trailer?Yes, the alternator will charge both batteries, but to be safe I wouldn't power any other devices while charging both batteries(i.e radio, headlights, etc.) The second battery is a load, which will draw current at a rate that is a function of its present voltage and mAh rating. So if the cell is severly drained, it will draw a lot more current. I would fuse it for sure.How can I use my towing car to charge the battery in my small tent trailer?Round style trailer plugs charge batteries on campers with no damage done to tow vehicle. Take your car and trailer to a R.V. dealership, they can change both plugs for around $100. Or buy a battery charger, and keep it plugged into your camper on trickle charge. This should keep your battery up for a long time on a pop-up camper. If it don't then you need a new battery(camper).How can I use my towing car to charge the battery in my small tent trailer?depends on the size of that battery