If it’s substantially excessive, this can cause electrical system and/or battery damage. Cushions, Lexington & Sonar, Trolling A voltage regulator needs to know two things before it can control the alternator properly. Seats, Fishing Boat Covers, Boat Seat Jacks, Boat Trailer Brakes & Still, it's perfectly normal for others to see the alternator not charge at all intermittently. 15VDC is not unheard of, I've seen it with my own truck, and the previous D****. Charging voltage might be a little high at 15 volts but is not the reason your fuse is blowing. Distribution, ProMariner ProNautic Normal charging on these is 14.5 to 15 volt, any meter could vary enough to get the 15.2. Guide, Boat I Have Replaced My Battery & Then The Alternator. Biminis, Paint and Holders, Cabin Accessories & The voltage regulator is built in to the alternator. Good advice but it didn't help my problem. Lights flicker even when volts are normal now truck at idle in park the rpm is going up and down from 600 to 700. Hardware, Boat Cabin Marble, Engine Accessories, Marine DC Power Plugs Dollies, SportsStuff Great Big Then it blows the 25A fuse (one of 2) that is in the CDI enclosure area, next to the CDI unit. Lights flicker even when volts are normal now truck at idle in park the rpm is going up and down from 600 to 700. I have a 2006 GMC 1500 with the 5.3 I have 15+ volts at my Battery, (actually from my alternator).. For some alternators, it's normal to see as low as 13 volts. Boat, Boat Buyers no issues. Higher than 15 volts indicates a fault in the charging system’s voltage regulator or related circuits. ACCOUNT, Find Deals, Camping & RV I tried the search, but couldnt find an answer. Software, Digital Took it and had it tested & it came back as bad according to the generator shop. Accessories, Electronic Navigation Can overcharging alternator kill battery? Systems, Marine Plumbing Anytime voltage rises, your current will drop ie.... if you have a circuit at 100 volts drawing 10 amps of current then the same circuit at 200 volts would draw 5 amps it's always directly proportionate between voltage, resistance, amp draw and power (wattage). Bilge Pumps, Shop You are using an out of date browser. Charging system tested while vehicle was running and it failed, no charge. Covers, Boat Shrink Wrap Accessories, PWC Parts & the voltage of each cell for a lead acid battery is normally 2.1-2.3 V. small variations are due to how the battery is made, but the voltage range is determined by the electromotive force which is given by the chemical reaction between the lead plates and the acid. & Any Idea As To... https://www.2carpros.com/articles/how-to-check-a-car-alternator, https://www.2carpros.com/articles/how-to-check-wiring. A car alternator needs to be putting out at least 13-14 volts (ideally between 13.8 and 14.2 volts) to effectively charge a 12 volt car battery.If the alternator is putting out too much voltage (15+ volts), it is likely your battery acid will boil over out of the battery. Axles, Boat Trailer Tie Starters, Marine Solar Power Almost too high to be believable if there is still liquid in the battery. What could be the problem? i think the voltage requirement might > vary slightly depending on the type of battery, but 15 volts sounds > good. Plumbing, Fresh Water Boat & Rings, Prop Nut Kits & & Circuit Wells, Toilet & Waste Covers, Other Tubes, Shop Locks, Boat Deck Over charging. the battery is one year old. Battery Charger, Marine Audio & Tables, Minn Kota get a volt meter set it on dc scale start your engine .take meter hook it to battery it should be 13.5 to 14.5. it shouldnt go over 15. if it goes over 15 volts your alternator has a bad voltage regulator. When the voltage output of an alternator reaches a higher-than-recommended threshold, it will destroy the battery and ruin the electrical system of the vehicle. Accessories, Boat Waxes, Boat Cleaning It goes to the down side of the tilt/trim relay on one end of the wire and to the ignition switch (ON and START part of switch) on the other. Systems, Lowrance Hook2-4 GPS Test At Main Alternator Wire Reveals Output Of Approx. Alternator is overcharging. Holder, Anchor & Dock Deals, Boat Seats Hardware, Marine as far as I understand, having 15 V is not possible. After I replaced that and the alternator. You must log in or register to reply here. Now I had the old alternator tested and it passed three times. Wednesday, April 3rd, 2019 AT 6:54 PM Seats, Offshore Boat These charge heavier than the old days of 13.5 -14. 14.3!!!! Furniture, Boat Seat Pedestals & Motors, Fishing Downriggers & That is a question I asked way back in the thread.. How does he know it is overcharging… Manufacturer, Boat Tables & PFDs, Roof Racks, Carriers, #1 is it needs a good vehicle ground, 0.0 volts or as close to the actual voltage at the battery NEGATIVE terminal as possible (which should be 0.0 volts). Not sure if they are? Kits, Boat Trailer Also note those years had some issues with faulty battery cables. Bike has always charge somewhat high (14volts +) but this year when I went on my first ride about 3 weeks ago it was normal charge at idle but when riding it looked pegged at 16 volts. Apr 01, 2009 | 2002 Ford Escape. The Label Came Off The... Hi, If anything, a higher voltage would lower your current draw as basic ohms law states. Most batteries require 14.8 to 15.5 Volts for bulk, 14.8 Absorption & 13.2 for Float. Rafts, Paddle Switches, Shore Power & AC Now, Shop I presume your voltage with the first (overcharging) alternator was in excess of 15.5 volts, which after a short while will start "cooking" the batteries and producing that sulfer smell. MPPT 75/15 overcharging. Boarding, Paddles & The voltage will read 15+ volts once in a while it will drop to normal 14 volts but a couple times it would drop to 12 volts and stay there until I turn of the truck and restart it and it will read 15+. Tops, Bimini Top My truck is a 1500. If the voltage ever goes above 15 volts, there is a problem with the voltage regulator. For a better experience, please enable JavaScript in your browser before proceeding. If it is actually charging more than 15 volts, then you need to get a new alternator. The battery is three years old and a brand I never heard of but it started perfectly in negative weather. My wife's '76 LTD carried 14.8 volts for over 20 years. Bullet Skimmer, Paint and The battery was tested and it tested good. You think it is because you flip the switch on the panel and the green light lights up. Grills, Boat Drink Meaning no problem. You are correct, 18 volts is much too high, but an alternator can not cause over-charging unless it is assembled incorrectly with one of the brushes grounded through its mounting screw. Galley, Barbeque I was told it was in working condition. This could be a bad component or maybe a shorted wire somewhere and this over current condition could be what's causing the high charging voltage (if that is high for your motor). Charts & Charging system on any vehicle should put out a wee bit over 14 volts to properly charge the battery and as such a battery charger need to do the same so as long as it was not on the charger for an extended period it should be ok however it is best to use a motorcycle specific maintenance charger to avoid over charging my alternator seems to be slightly overcharging. 1 decade ago. Pumps, Livewell Aerator Pumps This same voltage setting will give an extra 1.05 volts at 90 degrees F and dramatically shorten the lifespan of the battery. AN If the voltage is constantly below 14 volts, you should have the system checked. voltage needs to be at a fairly high rpm? Harley 03 Ultra overcharging, 16 volts. Communication, Auto Pilot Hello, I have a 2007 GMAC Sierra 1500. Dash continues to display 'charging system failure'. Riptide Terrova 80 Trolling Motor w/i-Pilot & Bluetooth, Inflatable Most RV converter chargers combine 3 stage battery charging into a dual stage hybrid process. Professionals. 15+ will boil batteries and shorten bulb lifetimes. But once in a while like today it went up to 15+ volts then dropped to 12 and would not come back up. at idle, I am getting 15.1 volts at the battery. It may look fine and clean but if you skive back the insulation four to six inches you may find a lot of corrosion as well. Ventilation, Interior & Cabin Fenders, Boat Trailer Kits, Seadog Stainless Steel Cup Higher than 15 volts indicates a fault in the charging system’s voltage regulator or related circuits. Meters, Marine Electrical Panels It should be around 14.1-14.2 max right? (Well, technically it's there, but the bubbles are acting as … Honda 5hp Outboard, Boat Biminis, View Savers, Boat Trailer Guides & At this point, I would keep my eyes on it for the next few days. It is not your battery overcharging it is your alternater putting out to much juice to the battery. Still using the battery. My car is exactly 3 years old. Shelters, Boat For some, a constant 13.6 volts is an indication of a problem. Car Charging at 15.2 Volts With New Battery 9 Answers. This fuse is the one that has a white with red stripped wire on both ends. Boat Gel Coat - Spectrum Color, Pumps and It seems that the thing never ran above 13 volts or so before. Light bulbs burning out was a bit of a problem, but the ham radio equipment loved the higher voltage. High Back Reclining Helm Seat, Cabin and Sealant, & Bought a reman and it was still overcharging.....took it back and exchanged for another reman from Peterbilt (Delco-Remy 5SI series)....hooked up the "smart sense" terminal and it still overcharges.....just past 15 volts. While driving the battery light came on and the dash displayed 'charging system failure'. I have NO inverter. Only ever replaced 3 batteries. Maintenance, Pumps and & Though the regulator is designed to protect electrical components of the vehicle, sometimes it does fail. Smoke Bilge Pump, Tires, Rims, & Hub The dash volt meter shows that it is charging at 12 volts. To your problem, yes, 15.4 volts is about 1 volt or so too high. I put truck in neutral while driving turned truck off and restarted it went to 15+ then two minutes later dropped to 12 and stayed. 15 Volts While Disconnected... Can You Give Me A Step By Step Process On How To Remove Alternator And The Tools Required. Accessories, Marine Electrical Deals, Paint & Maintenance Mr. Badwrench. Seats, Pontoon Boat Seats & J. Ropes, Boat Products, Carbon Monoxide & Tops, Other I'm guessing that you are reading the gauges on the dash. It's an artifact of bubbles formed on the plates from overcharging, which have by themselves an anode and a cathode. Supplies, Boston Whaler, 1972-1993, Yesterday my car didn't start, battery low, 15 degrees outside. Do you know what the max. Boats, Propeller Parts & The 15V is not a real reading. Drink Holders. The other 25A fuse that is next to the one that blows never has blown. Fishing Lures, Fishing Rod Holders & Trailer Winches, Shop Instruments, VHF Radios & Blocks, Marine It seems to me that 15.5v is very high. I cleaned all grounds checked wires, could it still be the battery? Could be caused by the computer controlled of the alternator's field generation circuit-have it checked. Protection, Dock Storage & verify your meter. Even a brand new part can be bad right off of the shelf. All, Boat Bimini get a new alternater. System Voltage was determined to be below 12.56 volts Tow/Haul Mode is enabled When any one of these conditions is met, the system will set targeted generator output voltage to a charging voltage between 13.9–15.5 volts, depending on the battery state of charge and estimated battery temperature. Storage I have repeated and heavy blue/white battery terminal corrosion--especially on the positive post, but has also migrated to the metal battery tie down. Hitches, & Helm Seats, Shop But then a weak ground would likely be somewhat obvious when cranking the engine and you didn’t mention that as a problem. The voltage regulator in the battery blew the 10amp fuse in the junction box. All rights reserved. Alternator was removed and bench tested and it passed all test. Towers, Tow Ropes & Parts, Rule 1500 GPH Automatic Over-charging is caused by the voltage regulator driving the alternator too … My question is this, Does my truck have an external Voltage Regulator? You mentioned your voltmeter runs at about 15 volts most of the time. It may not display this or other websites correctly. Reinstalled alternator was reinstalled, checked all terminals and wire connections to make sure they were secure. Accessories, Boat Lift Canopy You can see from Lifeline’s chart above, the only way to fully charge their battery at 30 degrees F is with 15.1 volts. Accessories, Pontoon Bimini & Live Bait Thanks I will start looking for the short. This creates a false" voltage potential that really isn't there. Have the system checked as soon as possible as this “overcharging” condition can cause damage to your electrical system. ... (18-20 volts depending on the sun) that goes through to my 12 volt electronics in the camper. Parts, Wash Down > 15 volts sounds about right. Zincs, Generator Need Step By Step Instructions In Removing Alternator And The Tools Required. Breakers, Power Packs & Jump I would say the present alternator is … Replaced Battery And Alternator And Still Not Charging. Hardware, Boat Seat But once in a while like today it went up to 15+ volts then dropped to 12 and would not come back up. Fasteners, Boat Windshield Trolling Motors, Shop & Dock, Anchor Chains & After The Truck Is Not Driven For A Few Hours The Battery Goes Dead. CREATE Hello all. Screws, Boat Handles, Pulls, Plumbing, Anchor If the battery is dry it is probably ruined. The system works great until the BattleBorn is charged, then the voltage keeps climbing up. JavaScript is disabled. Marine Battery Chargers, Shop What is wrong is it boiling the water out of the battery or? Platforms, Slide Maintenance, Boat Cleaners & The end result is that the battery never actually get fully charged. Login, Boats A high voltage reading, typically above 15 volts, indicates a problem. Caulking, Marine Engine Tested the alternator tested fine exchanged anyway still same thing got new battery same thing. Outboards, Shop Terminal It was whining so I got a new one anyway installed it and it is actually reading higher 16+ volts. Winches, Boat Motor Supports & Telescopes, Covers and I have an obd 2 scan tool that I link to my phone and it reads the same as the dash. The tilt works fine until the fuse blows. Rollers, Boat Trailer Boat Repair, Boat Paint & Alternators that overcharge will typically produce excess voltage to the battery, making the … Forums, Find Hardware, Boat Seats by Transom Dock, Cabin and (Merged), Could be the computer control of the alternator field generation messing with you-its like a built in IVR on the computer that controls the alternator output, I never thought of that, if I go out and start it right now cold, it charges like it should and running down the road its fine, I put it in gear earlier and turned the lights on and my kc driving lights which draw a lot of power and it dropped right off, i'm just assuming that the battery if it's good should power everything better than that though, i'm wondering if it's holding a false charge, i'll know better tomorrow after I load test it, or take it to the dreaded dealership and have them scan it, thanks for the reply.