A civil engineer huh..
If you shop around you can already find them as cheap as AGM's...surely in the ole US of A you might get them even cheaper
then than poor us in Australia who pay more for everything boating and fishing
then than you guys..
I saw these on a "Black friday" special last weekend..if you do the currency exchange and take into account the usable amp hours they come in about the same or maybe even a fraction cheaper
then than what you paid for your AGM's..
A friend also bought 3 of these Voltax 12v 100Ah batteries on special for $AU329 each this week..this is significantly cheaper
then than what you paid for your AGMs on a usable Ah basis...
VoltaX 12V 100Ah Lithium Battery LiFePO4 Iron Phosphate Rechargeable 4WD RV for sale online | eBay