Welcome! Please use the navigational links on your left to explore our website.

Company Logo Shop Now
   Allis Chalmers Case Farmall IH Ford 8N,9N,2N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver
Classified Ads
Photo Ads
Tractor Parts

Discussion Forums
Project Journals
Tractor Town
Your Stories
Show & Pull Guide
Events Calendar
Hauling Schedule

Tractor Photos
Implement Photos
Vintage Photos
Help Identify
Parts & Pieces
Stuck & Troubled
Vintage Ads
Community Album
Photo Ad Archives

Research & Info
Tractor Registry
Tip of the Day
Safety Cartoons
Tractor Values
Serial Numbers
Tune-Up Guide
Paint Codes
List Prices
Production Nbrs
Tune-Up Specs
Torque Values
3-Point Specs

Tractor Games
Just For Kids
Virtual Show
Museum Guide
Memorial Page
Feedback Form

Yesterday's Tractors Facebook Page

Related Sites
Tractor Shed
Ford 8N/9N Club
Today's Tractors
Garden Tractors
Classic Trucks
Kountry Life
Ford 9N, 2N & 8N Discussion Forum
Order Ford 8N Parts Online

Re: 8n battery

[Show Entire Topic]  

Welcome Guest, Log in or Register
Author  [Modern View]
Bruce (VA)

05-23-2020 03:22:45

Report to Moderator

You need 9.5 volts to charge an 8 volt battery; your generator puts out 7.5 volts to charge the 6 volt battery. Trying to charge an 8 volt battery with 7.5 volts gets you a perpetually discharged 8 volt battery operating at about 50% capacity. Trying to charge it with a 12v charger gets you a boiled battery. Adjusting the 8N voltage regulator to put out 9.5 volts requires special tools and expertise to do it correctly. Or, you can try it yourself as long as you are prepared for the consequences of failure: a boiled battery, a burned up v/r or no charge at all. Cranking up the output on a 2 or 9N generator will increase the charging voltage but at the cost of overheating the generator. Having a partially discharged 8 volt battery in your tractor is no better than having a fully charged 6 volt battery. At 8.43 volts, your 8v battery is fully charged. And it needed 9.4 volts to get there. But, at 8.04 volts, your 8v battery is only 25% charged. In other words, it’s no better than a 6v battery at that point. If you already have an 8v battery and the v/r was adjusted to put out 9.5 volts, chances are very good that it is no longer doing that. Because the adjustment was made by bending the points arm. Is that how ignition points are adjusted? You will also need to keep checking your voltage output every few months because it will change with both time and temperature. Remember, it’s only about 2 volts that makes the difference between no charge and a boiled battery.

IMHO…….cleaning up the grounds, replacing the cables and buying a new 6v battery is a lot easier.

[Log in to Reply]   [No Email]
[Show Entire Topic]     [Options]  [Printer Friendly]  [Posting Help]  [Return to Forum]   [Log in to Reply]

Hop to:

We sell tractor parts!  We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]

Home  |  Forums

Copyright © 1997-2020 Yesterday's Tractor Co.

All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy

TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Yesterday's Tractors - Antique Tractor Headquarters

Website Accessibility Policy