45Kevin
Well-known member
My van came with the aux battery located in the engine compartment and has the EK1 and F150 terminals under the drivers seat.
I would like to have two separate 12V systems.
One would run off the aux battery and power the fan and my cheap Chinese diesel furnace.
Those two devices would probably not get used a lot together. The aux battery could probably run the furnace for two straight days before it got down to 50% SOC.
The reason for two systems is that the aux battery will discharge at a lot colder temps than my lithium batteries. So on cold days when I enter the cold van I can run the furnace before the inside temp is warm enough to let the lithium batteries work.
I will be using a Renogy DCDC 50A charger for the lithium batteries, as well as solar and shore power through my Renogy invertor.
The DCDC will draw from EK1 (I think) and the furnace power will come from the F150 (I think). I'm still trying to wrap my head around this.
My question is, can I get two independent 12V systems, or will they be connected through the connection of the charger to the vehicle system?
The Renogy DCDC Operation booklet states that if the solar controller part of the DCDC senses a fully charged house bank it will divert power to the starter battery, which in this case would be the aux. So it seems the connection is a two way street.
I could use a separate controller if needed.
My head is going to explode.
I would like to have two separate 12V systems.
One would run off the aux battery and power the fan and my cheap Chinese diesel furnace.
Those two devices would probably not get used a lot together. The aux battery could probably run the furnace for two straight days before it got down to 50% SOC.
The reason for two systems is that the aux battery will discharge at a lot colder temps than my lithium batteries. So on cold days when I enter the cold van I can run the furnace before the inside temp is warm enough to let the lithium batteries work.
I will be using a Renogy DCDC 50A charger for the lithium batteries, as well as solar and shore power through my Renogy invertor.
The DCDC will draw from EK1 (I think) and the furnace power will come from the F150 (I think). I'm still trying to wrap my head around this.
My question is, can I get two independent 12V systems, or will they be connected through the connection of the charger to the vehicle system?
The Renogy DCDC Operation booklet states that if the solar controller part of the DCDC senses a fully charged house bank it will divert power to the starter battery, which in this case would be the aux. So it seems the connection is a two way street.
I could use a separate controller if needed.
My head is going to explode.