battery drain - 1972 evinrude 50 selectric

JT!

Petty Officer 1st Class
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May 19, 2008
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am i supposed to disconnect the battery when im done for the day? even though the ignition key is OFF, there's power constantly being used somewhere. i come back to find my battery at 4v

is this normal?​
 

tashasdaddy

Honorary Moderator Emeritus
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Messages
51,019
Re: battery drain - 1972 evinrude 50 selectric

you either have a load drain, or a battery with a dead cell.
 

JT!

Petty Officer 1st Class
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May 19, 2008
Messages
260
Re: battery drain - 1972 evinrude 50 selectric

there is a current draw, even with key off.

i just recently replaced the rectifiers, and had found voltage present on terminals #1 & #2 with #3 being 12v from battery​
 

F_R

Supreme Mariner
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Jul 7, 2006
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28,226
Re: battery drain - 1972 evinrude 50 selectric

With voltmeter black lead grounded there should be Zero volts present at 1 & 2 and battery voltage at the red wire. Your rectifier is shorted.
 

JT!

Petty Officer 1st Class
Joined
May 19, 2008
Messages
260
Re: battery drain - 1972 evinrude 50 selectric

i just replaced my diode assembly (brp#580841 oem#510885) is this the same as the rectifer youre talking about? the round component with 3 wires or a different part?​

i tested it and all leads can be read 1 way but not the other. is there another test to perform?​
 
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