Battery AC Conductance Meter..what readings vs size ?

Started by phonetic, January 14, 2013, 11:34:03 PM

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phonetic

I just got a battery conductance meter..to test Internal resistance of batteries, based on a AC kelvin bridge 100mA 1khz sender and 1khz voltmeter, measure range 0.1mOhm to 20Ohms.

measued my surrette S600 battery (6 volt 600ampHr) get a reading of 6.2m Ohms
100AH 12 volt AGM get reading of 24m Ohm.

other than data from vendors, is there a rule of thumb for lead acid batteries amp-hour  and its  Internal resistance ??
Home:
3.04kW Grid Tie.
Weekender:
6.08kW Off Grid. DC & AC coupled
32 of 190W (12+12 Array DC) (8 Array AC)
Midnite Classic 150 & Classic Lite 150
1.5KW AC coupled Grid Inverter
8 of 600 amp hour Surrette S600 flooded cell battery bank 24 volt 1200 amphour
Outback VFX3024E Inverter Charger, Mate 2.