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1983 Evinrude - Batteries overcharging

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alex32165

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I got a boat with a 1983 Evinrude 70HP E70ELCTE motor last summer. Shortly after getting it (and it could have been doing this the entire time) I noticed that the volts were reading very high, around 17 volts. I switched to a different battery and it seemed to be normal for a while, but then it started doing it again.

I know that it seems to be that a regulator is bad, but would an engine this old have a regulator? Looking at this exploded part view https://www.crowleymarine.com/evinrude/oem-parts/outboard/1983/e70elcte/ignition-system i can see that part 43 is only labeled as a rectifier, not a regulator/rectifier...as shown by this link https://www.crowleymarine.com/evinrude/products/0583408-rectifier-lead-assembly

Any tips on my situation? Is it the batteries job to act as the regulator and i just have 2 bad batteries?
 
Replace it with this...problem goes away
1740784197667.png
 
They are about 100 but batteries will last maybe 10 years. I have an Interstate marine that is 12 now and still strong. Batteries are allowed to hibernate here in N. Minnesota for about 5 months. Charge them fully, 12.65 volts, then let them retire in my unheated shop for the winter. If they need one recharge or less during this time, indicates a very good/healthy battery.
 
Here is my garden tractor battery, an Exide from 2015. I just took in into the house to test a car stereo. Batteries survive much longer in the cold maybe double the life up here is long as you keep them functionally charged so the sulfuric acid/water will not freeze.
I recently had to retire the Interstate from my '97 F150 just after it had its 20th birthday. This truck is not driven on the calcium chloride/salt, so basically stored for 4 to 5 months. 300,000 miles +.
 

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