But for getting the most out of a panel, it's necessary to rotate it with the sun. The problem with the roof top solar panel is, that its direction cannot really be changed. LED indicators on both devices always giving feedback of the current status, either if an error occurs, or the system is in standby or when it's charging the batteries.Īnd as everything has been so easy to connect, we furthermore added two 100W foldable solarpanels from Aukey and Polaroid and small solar suitcase of 60W. Without the need of a MPPT solar charger, we just plugged it into the D250S Dual and the solar panel worked from the beginning. Now with our dual battery system up and running, we also added a 100W solar panel on the roof rack. On top of that, we've got the CTEK MXS25, a 25ah battery charger, in case we would stay on a campground with 230V electricity.Ģ25 Amps Of Battery Power & 360W Solar Energy SMARTPASS has a temperature sensor which protects batteries against high temperatures. SMARTPASS also has an integrated “Battery Watch” feature which protects batteries from harmful total discharge and ensures that critical equipment such as radio, emergency lights and navigation systems get the proper priority to provide maximum functionality. Used together with a D250S DUAL DC/DC on-board Battery Charger, SMARTPASS provides optimal charging via CTEK’s unique multi stage charging cycle, which also protects your batteries. It distributes power to battery banks or consumers depending on energy needs, such as the service battery bank, bow thruster or anchor chain hoist batteries or power consumers like refrigerators, radio’s, etc. It controls and optimizes energy produced by alternators, solar cells, wind power or conventional AC/DC chargers. SMARTPASSis a smart automatic dual battery isolator switch and energy management unit. With the system above, we already had a highly reliable power-management, but to make it even better, we also decided for getting the enhancement. It increases simplicity and reliability by eliminating the clutter of many individual components including battery switches, secondary battery isolators, relays, load managers, low voltage alarms and cutoff’s, separate solar panel and wind generator voltage controllers, etc. It provides temperature controlled charging to meet the charge requirements of your service battery bank in any weather. It gathers energy from multiple DC power sources (the alternator(s), solar panels and/or wind power generators) and optimizes power to properly charge your service battery bank with microprocessor controlled smart charging algorithms. The D250S DUAL on-board charger, charges while you drive. It also contains MPPT solar power management functionality and a temperature compensated 20A smart battery charger.Īll combined into one multi-functional product! The CTEK D250S is a Premium Battery Isolator, a Smart Power Relay and a Solar Panel Voltage Controller. Rather than buying 3 different devices, I decided to use one device that should manage everything. Perfect for a proper dual battery setup.Īfter doing a lot of research, I found a system which could pretty much fit my needs. It is a deep cycle AGM battery with 150 AH and can be discharged until 8.4 Volts (if I remember right). I still had an Effekta BTL 12-150, which I used in my VW T4. The starter battery of the JEEP is a Optima Yellow with 75 Amps, which is a pretty good and reliable one, but it hasn't enough power for supplying all of our devices. Charge-controller (for the solar panel)īut this system still would first charge the main battery and when it is fully charged, the service-battery afterwards. In this case I would have needed different devices: I also wanted the dual battery setup to be charged parallel, as well as to boost the power, which comes from the alternator. There might be some more intelligent cut-off relays for dual battery systems on the market, but I also thought about some more power suppliers, like solar energy or something else. But what, if our soundsystem is running, the headlamps are turned on and maybe the air-condition or the heater is running? In this case, the service-battery practically would never be charged. It usually loads the service-battery only, when the starter battery is fully charged. For our eletrical devices, like battery-chargers, power-banks, headlamps etc., we needed something more reliable, which wouldn't force us to stay on a camp-site. DACHZELTNOMADEN – Auxiliary Diesel Heaterĭue to our high demands on eletrical power, we needed something more intelligent than a simple cut-off relay and a service-battery.
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