Battery Charging Cicuit
Printed From: CorrectCraftFan.com
Category: Repairs and Maintenance
Forum Name: Engine Repair
Forum Discription: Engine problems and solutions
URL: http://www.CorrectCraftFan.com/forum/forum_posts.asp?TID=2489
Printed Date: November-23-2024 at 3:39am
Topic: Battery Charging Cicuit
Posted By: Bhedbloom
Subject: Battery Charging Cicuit
Date Posted: September-22-2005 at 8:53pm
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How do I test to make sure that the circuit that cahrges the battery while running the engine is working properly?
My new marine starting battery (not deep cycle) went dead after my last trip to the lake. I figured that the alternator must not be charging the battery so I had the alternator rebuilt and put a new voltage regulator in while I was at it. I hooked the garden hose up, started the boat in the drive, and let it run for about half an hour but the new alternator would not charge the battery. I took the battery in and it tested good. What Gives? Was the battery too dead for the 60 amp Alternator to charge in that length of time or is the charging circuit not working properly? Thanks for the help with this one!!! ------------- Barry, South Carolina |
Replies:
Posted By: Bhedbloom
Date Posted: September-22-2005 at 8:55pm
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Oh I started it by jumping from a another battery I had in the garage. ------------- Barry, South Carolina |
Posted By: JEFF KOSTIS
Date Posted: September-23-2005 at 12:20am
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Start the engine, and put a digital voltmeter across the battery. It should read 13.5 to 14.5 volts. If its less, its not charging. If so, check the voltage from the case of the alternator (ground) to the large stud (output +) on the back of the alternator. If its lower than 13.5 volts, then the alternator/regulator or wiring is bad. ------------- MUSTANG COUNTRY http://www.correctcraftfan.com/diaries/details.asp?ID=1074 - 1974 Mustang 17 http://www.correctcraftfan.com/diaries/details.asp?ID=1093 - 1976 Mustang 17 |
Posted By: David F
Date Posted: September-23-2005 at 12:38pm
| Also, 30 minutes of idling will not significantly charge a dead battery (probably not enough to start). |
Posted By: Leon - Denmark
Date Posted: September-23-2005 at 7:03pm
I had 2 problem's with my alternator, B+ (charging wire was broken), i fixed it, still not charging, kontrol lamp connected to D+ was blowen, so i changed the lamp and it went 14.4volt on B+ wire. ------------- 55.18.728N 11.10.018E, yea its up northern Scandi. http://www.hobieco.com/linked_images/nissan_hobietiger.wmv - 48knots Flying Hobiecat |
Bhedbloom wrote:Posted By: JEFF KOSTIS
Date Posted: September-26-2005 at 12:15am
David F, 30 minutes is plenty of time to chare a good dead battery to start. It definately wont be fully charged, but she will crank over no problem. Even with a 37 amp alternator, you will get 20 amps or so of charging at idle including on board draw. A 10 amp charger hooked on a dead battery will bring it up in 20 minutes to start my G3500 van with a 350.  ------------- MUSTANG COUNTRY http://www.correctcraftfan.com/diaries/details.asp?ID=1074 - 1974 Mustang 17 http://www.correctcraftfan.com/diaries/details.asp?ID=1093 - 1976 Mustang 17 |