I've been investigating Lion batteries and working with them for replacing
NiCds in power tools, etc.  It definitely could be done for the vanagon
house battery.  If you are interested in making your own, Julian's video
series will give you a good primer.  He was replacing the lead acid batts
on an electric bike.
https://www.youtube.com/watch?v=y4dAXWgwqQA

On Fri, Jul 14, 2017 at 1:18 PM, Kenneth O'Connor <k_a_oconnor@yahoo.com>
wrote:

> Hello Don,
>
> I have chatted with Cameron about his LiIon battery install. It seems to
> be week though out. Here's a link to a vimeo video about it.
>
> https://vimeo.com/219040323
>
> Thank You,
>
> Ken
>
> Sent from my iPhone
>
> > On Jul 14, 2017, at 10:03 AM, Don Hanson <dhanson928@GMAIL.COM> wrote:
> >
> > Is there an available Lithium battery that fits into the space under the
> > driver's seat in our van?
> >   One might be far superior to the older generation batteries...Do they
> > even make deep cycle lithium battery s?
> >   I swapped in a lithium battery to save weight in my track car, did the
> > same job at about 3-4lbs that the standard battery (20lbs?) did, and
> tiny.
> > One could probably go 12v refrigeration, more than a day
>