Entertainment systemWhile traveling in a camper van can afford opportunities for hikes through the beautiful wilderness or visits to the beach, there will inevitably be some idle downtime. Since not every minute can be filled with adrenaline-inducing adventure, it is a good idea to have some onboard entertainment. Whether you need an upgrade or want to install something in your custom camper build, entertainment is a must.If you have built your own rig, you will have a lot more freedom with what you can do. Most people will want to have a TV with an integrated sound system that can be connected via Bluetooth. Having the TV double as a monitor is useful, and incorporating a gaming system is also popular. Popular with many travelers are TVs that operate on 12 volts DC rather than the 120 volts AC in houses. A range of sizes are available, and they can be mounted in many ways to suit your needs. This can be on the ceiling with a flip-down hinge, on a wall-mounted arm, or some are flush-mounted on the wall with a hinge to swing out for viewing.Regardless, adding enhanced sound is imperative. This can be as simple as a standard soundbar, but clever installers can hide a multi-speaker setup with amps and subwoofers, creating a mobile theater experience hidden from view. In the end, audio can be provided by something as simple as a Bluetooth speaker to a complete mobile recording studio, as one enterprising man from the U.K. has done.Power storageWhile you are driving down the highway, your van provides you with power for almost everything you need. You have climate control, a stereo system, and auxiliary power for charging devices. However, internal power goes away the moment you stop and turn the vehicle off. Save for leaving your engine running all night — which is not recommended for a host of reasons — you are going to need power. Packing a generator in a camper van is impractical and noisy, so your best bet is to install a power bank.Modern batteries are great for storing large quantities of electricity and a properly designed and installed system can treat you well on your journeys. A power bank can be a relatively simple system built for a few hundred dollars or get increasingly complex and costly, depending on how you want to set it up. After determining your power load from accessories such as refrigerator, air conditioner, and lighting, you can estimate how much power you will need. Clever setups use a series of batteries that can be charged either by the van's alternator or solar panels. This requires a charge controller and a battery isolator to prevent voltage from both sources from overloading the system.The batteries you choose will have an impact on how much power you can use and for how long. The battery choices generally include an absorbed glass mat (AGM) battery, a silicon dioxide battery, or a lithium battery. These have pros and cons that correlate to the price, so some good research is fundamental to assessing your budget. Add to this a good power inverter, and you will be ready to plug in whatever you need and make the most of your adventure.