![]() Modern split charge systems typically have a device that connects the starter and leisure batteries only when a charging source is operating, and electrically isolates them otherwise, ensuring that the use of one battery does not draw current from the other. On vehicles and boats this charging source is almost always the vehicle alternator which is in turn powered by the engine, but there can also be other charging sources not related to the engine such as a mains powered charger, solar or wind powered re-charging systems and portable generators. Split charging is the term used to describe the simultaneous charging of the vehicle starter battery and the leisure battery (or batteries) from a common charging source. But once you have a second battery installed, how do you keep it charged up in the same way that the starter battery is? This is what split charging is all about and this article will give you an overview of the various technologies commonly used, as well a some pointers to consider when specifying your own system. So the common solution is to fit one or more auxiliary batteries (often referred to as leisure batteries in vehicles or house batteries on boats) that are used purely to power those items not related to the starting of the engine. ![]() If you try to power these from your engine starter battery without the engine running then before long you'll have flattened it, leaving you stranded. These can be simple, low consumption items such as 12V sockets and LED lights through to more power hungry items such as a water pump, coolbox/fridge, navigation equipment, fan, laptop, TV or sound system. ![]() The unit can be monitored and programmed via Bluetooth.ĭimensions: 7.3″ wide x 5.1″ tall x 3.If you own a motorhome, campervan or boat then you'll almost certainly have electrically powered equipment installed that you'll want to run when your engine is off. It’s recommended that you use a trigger wire connection if using multiple units in parallel. For instance, you could wire up two of these units to increase your alternator charging capacity to 50 amps. ![]() ![]() Multiple Orion DC-DC chargers can be connected in parallel to increase total charging output. The charger can be turned on and start charging automatically by sensing the incoming voltage (when you’re running the van the voltage will be higher) or you can run a trigger wire that provides voltage/triggering when the ignition switch is turned on. This charges the batteries better than simple “isolators” or “relays” and protects your alternator from overloading since the output current is limited to the capacity of the DC-DC charger – 30 amps in the case of this product. They adapt the “raw” current with irregular voltage from the alternator to regulated output power for adaptive 3-stage charging of all types of batteries. DC-DC chargers (also called battery-to-battery chargers) connect your van battery to your “house” (camper) battery bank to charge from the vehicle’s alternator. ![]()
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