New battery designs and amp hours

If you don't have solar, think about some. Then you can quit thinking you need more AHs.

How high an amperage extraction rate do you insist on? Ampere hours and microwave power loads are about as useful as a slide rule in English class. If you NEVER ever plan on high amp extraction that narrows the field and makes your question more comprehensible.

High porosity plates with lots of surface area ratio, makes for high energy density. But this means an engine starting battery if you use a flooded battery. Life In The Fast Lane.

AGM especially Lifeline offers great power and cyclability. But it's ampere hour rating is somewhat limited.

In short, there are no 150 mph, 40 mpg, $20,000 cars...

If there were battery miracles your television would be jumping off the wall with all the screaming commercials.

path1 wrote:
Any of the "new" designs able to pack lots of amp hours in smaller size?

Yes. Lithium.

I have two group 39 12v AGM batteries and I couldn't be more pleased. I haven't even looked at them in well over a year and they keep up with all my demands. I have 280 watts of solar on the roof and haven't turned on the generator since I installed them

Www.rvbprecision.com

It depends on the shape of your space and your budget.

Unlimited budget: I think Li-ion batteries are the best (or among the best) currently available in terms of energy density. You'd almost certainly need different chargers, etc. to make use of them.

Modest budget: Golf cart batteries are probably about the best reasonable choices. 6V GC2 batteries (in pairs) are the most cost-effective. If you have the room, a pair of 12V GC12 batteries would have a greater capacity but be less cost-effective for the capacity. (GC12's are somewhat longer than GC2's, but about the same width and height.)

2 Golf Cart 6Volts. NAC