I should have mentioned the type of AGM. Yes 5 whatsits. (But with two isn't that in half?) ISTR a regular batt is about 10 whatsits from when Salvo was measuring Rs.
http://www.hespv.ca/hesproductspecs/HES/Stark_Battery_TD_ENG.pdfBattery made in China. Seems to be the same one as that 12100. Working well in my set-up, no complaints. Recharge and Float voltages are right for my converter too (14.8 Vector charger/13.7 float on the7455.) I can do both in parallel with a 55 amper and be close to their 27amp each spec.
