BatteryBeak: Utility of making internal resistance and state of charge measurements

[MrRiedemanJACC]

Ether,

Thanks for the pic of the homebrew test information. Our team is looking at purchasing the battery beak, but they are out of stock at Andymark (could get it direct from Cross the Road, but we still have credit left at Andymark). So I'm thinking about trying your test as an alternative to purchasing the West Mountain CBA (will try to get one of those next year).

Also, there are three connections on the back of the headlight I have, which is also from an old Camaro - but a '79. The light is labeled GEH6024. Do you happen to know what each one might be for? I'm assuming high beam, low beam, and ground? But I'm not having much luck in finding a diagram to know which is which.

Any other suggestions on the data we should take? I was thinking that we should record Volts and Amps every 10 minutes for the 2 hours). But from your previous post it sounds as though the 11.5 volts at the end of 2 hours is our determining factor to tell if the battery should be used or not.

Thanks for your and others help on this topic.