Search results

Now add the clamp on meter. Channel 2 is shunt, channel 3 is clamp on.

This is the ground for the aux battery. The shunt is 75mv at 150A. 80mv is 160A peak for the aux ground.

I am in the process of verifying the current probe.

This is starter cable.

Probes are the same, main gound peaks near 800A, aux ground near 200A. Main battery puts more current to starter than aux battery.

Disklok

I put a current probe on the auxiliary ground and the main ground. This is the starting current; channel 2 is auxiliary ground, and channel 3 is main ground. The aux ground scale is 50A/div; the main is 200A/div. Channel 1 is N2 channel 4 is the start relay.

Starter current

Amazon $10 for 2, side post battery disconnect.

very cool.

I added an auxiliary battery disconnect, so now I can check both battery voltages and charge each one separately.

Just having fun.

Note the engine is running in all the pictures. The spike is the start current. Picture 2 is inverted I think. This picture is better.

I put a clamp on amp meter on both grounds and the plus starter cable. First is starter cable.

Getting ready to measure current.

N1 and N2 voltage, cold start.

Take the relay case off, drill a hole in the top . Solder a test point on.

I made a relay with a test point, it is green trace. The probe is connected to the output of the stater relay. Trigger near 7.8V rise. The test point measures less than 1 ohm to GND. It is the coil of the starter solenoid. Main battery ground.

PCR is open during ess start. Trigger is starter relay green.

Ess hot start. Ignore the spikes they are from the inverter. The pcr and starter signals are moved down. Last image I moved green up.