http://invertersupply.com/index.php?main_page=product_info&products_id=1464&cPath=0_245#sthash.9wFFOfC6.dpuf
Do some shopping as prices vary. The unit with the 20 amp power supply-charger is ideal for our smaller batteries. With an automatic relay such as the sure power this will keep both chassis and house batteries in shape during storage.
Dennis
-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of Edward Maglott
Sent: Tuesday, August 25, 2015 10:43 AM
To: vanagon@GERRY.VANAGON.COM
Subject: automatic aux battery charger + inverter setup
I had a homemade setup in my van that I need to replace and would like to improve. I had a switch in the van mounted down near the outlet by the bed. In one position it connected all the AC outlets to shore power. In the other it connected them all to an inverter and turned the inverter on.
I relied on discipline to not switch it to the inverter position when plugged into shore power. That aspect of the system was obviously far from ideal. If I wanted to use a charger, I would plug it in manually and connect it to the aux battery and again, make sure I did not have the switch in the "inverter position."
So what I would like is:
-A system that would start charging the aux battery when I was plugged into shore power. 2 Amp maximum power is fine.
-When not plugged into shore power I would have the option to power all AC outlets from inverter. Inverter capacity of 400W should be fine.
-Not blow up or cause damage if I accidentally turn on the inverter when plugged into shore power.
Is there a commercially available device to do this? I hear you volks talk about using some "surepower" device or something like that?
Thanks,
Edward