Lifeline told me it wouldn't be a problem using them as starting
batteries, so they were combined as one, with no starting battery. It
was a TDI and started easily. They were in use for 8 years in my
ownership and two successive owners of the van, one of which toured
Latin America for 21 months.

Custom Li batteries are available, a friend in the solar / battery
systems industry ordered and installed a couple in several Vanagons in
the stock box under the driver's seat. 130 Ah.

On 6/9/2021 1:51 PM, Dennis Haynes wrote:
> That is also a great option. To keep the 2 100A/H batteries isolated to be used as dedicated house batteries a standard battery with vent tube can be placed right side under rear bench and connected to starter.
>
> It would have been nice if the battery box was just 3/4" taller so that Group 48 batteries would fit as that case is available in AGM and LifPo
>
> Dennis