lorenzo 0 #1 Posted 13 hours ago just got an electro 12 that has been sitting for a while, jumped the battery to get it started but the battery is not charging. only showing 12 volts at the battery and the voltage goes down the longer that its running. should I be seeing a higher voltage coming back to the battery? Thanks Share this post Link to post Share on other sites
CasaytheMann 277 #2 Posted 13 hours ago With the engine running you should see 13-14 volts. But I am not a mechanic. 1 Share this post Link to post Share on other sites
lorenzo 0 #3 Posted 12 hours ago correct, but I'm showing only 12v at 1/2 throttle. My owners manual wiring diagram shows only a rectifier, no regulator. I don't know how to test a rectifier. It shows an orange wire coming from the key switch, but doesn't show the color of the other 2 coming out of the rectifier. The tractor runs fine until the battery voltage drops down, the motor quits and needs jumped to start again.Thanks Share this post Link to post Share on other sites
953 nut 69,645 #4 Posted 12 hours ago A dead battery will not charge from the engine. Charge the battery and have it load tested at an auto parts store, they will di it for free. 2 Share this post Link to post Share on other sites
ebinmaine 80,813 #5 Posted 12 hours ago Very important thing to remember in these. The electrical systems are DC. Direct. Current. Bad ground is a bad circuit. Clean the mounting points of ALL components of the charging system. The Voltage Regulator must have good clean ground. 1 1 Share this post Link to post Share on other sites
ri702bill 13,122 #6 Posted 5 hours ago 6 hours ago, ebinmaine said: Very important thing to remember in these. The electrical systems are DC. Direct. Current. Bad ground is a bad circuit. Clean the mounting points of ALL components of the charging system. The Voltage Regulator must have good clean ground. A lot of us add a new ground wire from the battery negative terminal to one of the rectifier mounting bolts. This is better than grounding thru painted sheet metal... 2 Share this post Link to post Share on other sites
ebinmaine 80,813 #7 Posted 2 hours ago 3 hours ago, ri702bill said: A lot of us add a new ground wire from the battery negative terminal to one of the rectifier mounting bolts. This is better than grounding thru painted sheet metal... When the black ground wires start looking like spaghetti... it's just enough. 1 Share this post Link to post Share on other sites
