battery setup for alt delete. 2 6v or 2 12v

[turbothrush]

Originally Posted by steffen707

I've been trying to read up on batteries this week, and I thought I read that normal lead acid batteries and golf cart batteries emit hydrogen and aren't rated for in cabin use. Is this true? Are you guys just ignoring the risks, or are you somehow running sealed compartment that vents to outside the car?

My BMW x3 has the battery inside under a cover in the rear floor. Not sealed but fits nice. It just uses the vent kit that comes with most batteries (just a small plastic cover that goes over the top of the battery and a tube that connects the cover to the outside)

[Ryland]

Some lead acid batteries have a vent at one end, a small hose can be connected to it and vented outside if you are really worried, but VW bugs had their battery under the rear seat for decades.