Diagnosing Slow Cranking - Starter Amp Draw

[solarguy]

I'm troubleshooting a recent slow cranking speed situation and am looking for Starter amp draw numbers.  Car has 340, Turbo-Start mopar resto yellow cap battery, DB electrical mini starter, Heavy duty battery cables, clean terminals.  Battery and starter are about 18 months old.

With my d/c amp probe clamped around the positive cable and cranking with a remote starter switch, I am measuring 235-248 amps.  That seems high off the top of my head but I actually have no data plate to compare it against.  Before I go have the battery load tested, does anyone have any "Normal" amp draw numbers.   

Thanks

[72cudamaan]

That seems awfully high to me. Seems like I remember 100-120 amp as being
a normal amp load.

[ntstlgl1970]

  I think 150A is the high end of the scale. What is the battery voltage when you measure that amount of current? the next thing to check is voltage drops across all your connections. .2Vdc for connections, .5Vdc for solenoids. Something isn't right

[solarguy]

Thanks for the answers, I didn't do a voltage drop test, I will later.  Static voltage of the battery was 13.5v.  I have the battery out and on a charger just for GP.  I will post up when battery is back in car. 

Anyone have any idea of the wattage of these mini starters>  I would really like to know specs.  I am going to call DB electrical tomorrow just to have this info.  Assuming 10 volts at cranking, that means approx 2350 watts. 

[solarguy]

I just got back from load testing the battery, print out shows 13.23 volts and 183 CCA , looks like 18 mth old resto battery is gone.

I'm curious though why I was reading 235 or so amps and the load test shows only 183. I guess variable in load between their tester and my engine load??