Overcharging concerns

[Brendanpd28]

Hey everyone,

     I have yet to fire up my Evinrude since rewiring, but through my research I have heard of an overcharging issue that I want to be prepared for. I have a 1990 Evinrude 88 spl which I believe ONLY has a rectifier and NO voltage regulator. This could mean that when I throttle up, I could high very high voltage going to my electronics!!  I am using the blue seas "add a battery setup" which has the ACR to charge both batteries simultaneously.  Could this perhaps help me out or does that not make a difference?  I have heard of deep cell batteries helping this problem along with installing a CDI regulator on my outboard of course.   Has anyone else had this problem and have any advice?? I am already all wired up so I hope this isn't a huge issue.

Thanks so much!!!

[wingtime]

Modern electronice can operate on a borad range of voltage.  So unless you see over say 18V I wouldn't worry about it.  It is the spikes and LOW voltage that will do more damage.  This is where your ACR will help since the electronics are isolated on a separate battery.  Even better if you included the key switch circuit that temporarily disconnects the acr when you crank the motor.

[Brendanpd28]

Thanks wingtime. I didn't include the ignition circuit but I might now lol

[Brendanpd28]

Modern electronice can operate on a borad range of voltage.  So unless you see over say 18V I wouldn't worry about it.  It is the spikes and LOW voltage that will do more damage.  This is where your ACR will help since the electronics are isolated on a separate battery.  Even better if you included the key switch circuit that temporarily disconnects the acr when you crank the motor.

So today I connected both my batteries and got the motor going. I noticed that the status light on the ACR did not light up at all. I also noticed that when the motor was running, the engine battery voltage jumped up to 14v so I know it is charging but the house battery remained at 12.5v. Did I go wrong somewhere with the wiring? I wanna make sure everything is correct before launch day. I appreciate the help especially since you have the same setup.

Thanks.

[wingtime]

The ACR has a delay after it senses charge voltage before it joins the batteries. Did you include a switch to turn the ACR on and off? If so the led will blink slowly when in stand by mode.

[Brendanpd28]

Ooo ok. I read that somewhere but forgot to check the ACR after the motor was running for a couple minutes. And no I don't have a switch. I have the basic mandatory wiring setup....none of the optional stuff. 4 awg from the battery switch to the house and engine battery, 8 awg from ACR to engine and house battery with 50 amp breakers on each, 2 awg from battery switch to engine, and 10 awg to my fuse block and switch panel.