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16 Volt Anomaly When Battery Connected To Cut Off Switch

Printed From: the12volt.com
Forum Name: Marine Electronics
Forum Discription: Boat Stereos, Security, Navigation, Lights, Switches, Gauges, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=148072
Printed Date: May 06, 2025 at 5:11 PM


Topic: 16 Volt Anomaly When Battery Connected To Cut Off Switch

Posted By: plainvanilla
Subject: 16 Volt Anomaly When Battery Connected To Cut Off Switch
Date Posted: July 12, 2024 at 7:55 AM

Just joined the forum so here I go.
I have 10 foot Pelican Bass Raider with a 12v Trolling motor. Powered by a 12v Lithium Battery. Battery at rest after charging, nothing connected, is about 14v. All good.
My hook up is motors positive cable to cut off switch, cut of switch cable to positive battery terminal, negative motor cable directly to battery. I uploaded a simple diagram but not sure it worked.
When I test the battery with cut off switch set to off I get 16v. I removed both cables from the terminals And now I am back at 14v. Anyone know how this is possible.

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