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Adding a fridge to an existing 12v system
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<blockquote data-quote="Bsmiffffy" data-source="post: 533163" data-attributes="member: 35444"><p>Hi I currently have a 100w solar panel that feeds into a pwm controller then into 2 12v 110Ah batteries connected in parallel.</p><p>This feeds into a caravan 12v system and works fine but I now need to add a 90w fridge to the system. It will run on gas during the winter and 12v during the summer.</p><p></p><p>I am replacing the 100w panel with a 400w panel and replacing the controller with an MPPT controller feeding into the same 12v batteries.</p><p>The caravan live feed comes from battery 2 and the negative from battery 1 so one 220Ah 12v battery.</p><p></p><p>My question is how do I stop the fridge from draining both batteries. I need to charge both from the solar but I only want the fridge to use one of the 2 batteries and leave the other for lights etc.</p><p></p><p>Thank you in anticipation.</p></blockquote><p></p>
[QUOTE="Bsmiffffy, post: 533163, member: 35444"] Hi I currently have a 100w solar panel that feeds into a pwm controller then into 2 12v 110Ah batteries connected in parallel. This feeds into a caravan 12v system and works fine but I now need to add a 90w fridge to the system. It will run on gas during the winter and 12v during the summer. I am replacing the 100w panel with a 400w panel and replacing the controller with an MPPT controller feeding into the same 12v batteries. The caravan live feed comes from battery 2 and the negative from battery 1 so one 220Ah 12v battery. My question is how do I stop the fridge from draining both batteries. I need to charge both from the solar but I only want the fridge to use one of the 2 batteries and leave the other for lights etc. Thank you in anticipation. [/QUOTE]
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Adding a fridge to an existing 12v system
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