Warren-Pat_01 wrote:

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Thanks Tim & Richard,
As we use the van mostly on power - free camping is a minimum these days, are you suggesting that I don't have to change or modify the SETEC charger (I think it is a ST35) if I change to from AGM to Lithium?

That being said I modified the wiring to the house battery to be charged only from the solar - not the car & I use the house battery to power our 12v accessories, lights - not from the power (SETEC system). With the amount of sun that we get up here in NQ, I thought it was the best way to go. The car provides the 12v to the 3-way fridge.

I know the charging pattern is different between both types of batteries - will that make a difference?

Over to you - if I need to make a change, what do you suggest?

Cheers

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 Ok Warren i have done some tests on my battery.  Your Setec acts as a power supply providing 13.65V to the battery so i discharged my battery then charged it up to 13.65V with my Victron charger.  I then ran a discharge test today at a rate of approximately 8A and taking it down to 10.6V using a fridge and lights as my battery tester hasnt arrived yet.   

I was pleasently surprised as they drew 108.8Ah from the battery.  Judging by this you should have no issues charging your new battery with your Setec especially with your low power draw.

Good luck

Tim

!00Ah back on sale for $289 through Bunnings Marketplace.

https://www.bunnings.com.au/voltx-12v-100ah-lifepo4-lithium-battery-prismatic-cells-rv-camping-power_p0587428?

Good luck

Tim