Another Anderson plug and cable is needed for power and earth along the trailer drawbar and up to the charger. Then fix the Anderson plug where suitable. This cable must run to the back of the vehicle near the trailer plug, so follow the chassis rail along and use plenty of cable ties to secure it. Now wrap the entire length of the cable in corrugated split tubing for protection.
#Battery box for trailer install#
Use a lug crimper to install some battery terminals for the positive and negative cables – but don’t connect them yet. You’ll need to fit a fuse or circuit breaker according to the requirements of your DC charger – right here at the positive terminal of your main battery. Pre-made cable with Anderson plugs and connectors can be purchased at Supercheap Auto. To send power from your vehicle alternator to the charger – you’ll need to complete a simple Anderson plug installation. Allow a little space around the unit for dissipation of heat, and never allow it to be smothered. Once your battery is mounted, the DC charger should be installed as close to this as possible and fixed to a flat surface. However, this may not be suitable for some newer vehicles as the chassis might be completely isolated from the mains battery. When grounding the DC charger to the chassis is a good way to reduce cable length and voltage drop. The DC charger will compensate/increase the voltage required to charge the second battery. It is best practice mount the DC charger as close as possible to the mains battery, then run it out to the auxiliary battery with a suitable cable. Most DC chargers will switch off at 12.5v or 12.8v making it very close to the switch point. It uses preset algorithms according to battery type - to achieve a 100% charge.įor example: A charge of 13.8v from the alternator through 50amp or 8mm2 cable over 5m (5m x 2 positive and negative = 10m in total) back to the battery is a drop of 0.85v equalling 12.95v, before it gets to the DC charger. A DC charger can boost this voltage at the trailer battery. Voltage drop is a leading reason why people return DC chargers as they experience this when using regular 50amp cable extensions. When placing a DC charger far away from the main battery when it should be as close to the main battery as possible, much thicker cabling is required to avoid voltage drop. Solar Panels - Keep your batteries charged without your vehicle running with a solar setup.įinally, the DC charger.Deep Cycle Batteries - If you're planning a dual battery setup, you're going to need a deep cycle battery that's designed to be drained.Battery Boxes - Keep your deep cycle battery stored away in a battery box for peace of mind.DC to DC Charger - Better yet, a DC to DC Charger with a Solar input is a great way to charge your battery using solar and the vehicles alternator in one handy compact unit.VSR Kits - If you have a battery installed for solar use, wy not have the vehicle charge it while you drive with a Voltage Sensitive Relay.
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Mounting this battery inside a battery box is wise to avoid damage to the battery, or accidental shorting of the terminals. Instead, choose a GEL or AGM deep cycle battery.Īn AGM 100ah (Amp hour) battery is a good starting point for running basic accessories and a fridge from your trailer. The gases released from a wet cell battery during charging make them unsafe for enclosed spaces. When choosing a battery for your system, steer well clear of wet cell batteries. What is the Best Battery for a Camper Trailer? A battery, a battery box – or secure way of mounting it and a DC charger. There are three key components needed for a successful installation. But owning an older model doesn’t mean you have to live in the dark ages! This article will show you just how simple it is to fit a battery system to any trailer. Modern caravans and camper trailers are loaded with the latest 12-volt technology. How Easy is it to Fit an Auxiliary Battery into my Trailer/Camper?