Re: (ET) Overheating Problem

["David Roden" <etpost drmm net>]

If only the one terminal is getting hot, you probably have either a poor 
connection between clamp and battery post, or between wire and clamp.  I'd 
say the latter is more likely.

Place a load on the battery (jack up the wheels and run the drive motor, 
turn on the mower, etc.).  Use a digital multimeter set on a low voltage 
scale (start at 5 volts or so and go down, to protect your meter).  

Touch one probe of the meter to the center of the battery post, and the 
other to the battery clamp.  Measure the voltage drop.  You probably will 
need to use the millivolt range of the meter to read it (at least I hope 
so!).  Repeat, this time with one probe on the clamp and the other on the 
clamp at the OTHER end of the battery jumper (or wherever the wire goes).  

Repeat this procedure with the other wires that are not overheating to get 
a 
baseline measurement. 

When you see a much larger voltage drop across a connection than a similar 
connection elsewhere, you've found the faulty connection with excessive 
resistance and voltage drop.  That's what causes the heating.

Or, if the wire is one of the battery interconnects, just replace it.


David Roden - Akron, Ohio, USA

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