Electrical/Lighting/Alarm Having electrical problems? Discussion on everything electrical and lighting systems.

Battery

Thread Tools
 
Search this Thread
 
Old Mar 19, 2022 | 03:37 PM
  #1  
PLANET HARLEY's Avatar
PLANET HARLEY
Thread Starter
|
Advanced
Photogenic
Photoriffic
Shutterbug
Joined: Oct 2021
Posts: 96
Likes: 6
From: FRANCE
Default Battery

Hi
my brother boosted with another battery to start his fatboy 92 but by removing the cables he touched the + with the -

the bike starts but I fear for the voltage regulator






 
Reply
Old Mar 19, 2022 | 03:41 PM
  #2  
WP50's Avatar
WP50
Seasoned HDF Member
10 Year Member
Photogenic
Photoriffic
Joined: Apr 2011
Posts: 6,183
Likes: 2,131
From: W. Texas
Default

If just a momentary strike or touch it's not likely it hurt much of anything.

Ck charging with a volt meter. 13.8 -14.2 reading has been a good rule for me
Oh Raise engine rpm to about 1500 or so when testing
WP
 

Last edited by WP50; Mar 19, 2022 at 03:45 PM.
Reply
Old Mar 19, 2022 | 03:46 PM
  #3  
PLANET HARLEY's Avatar
PLANET HARLEY
Thread Starter
|
Advanced
Photogenic
Photoriffic
Shutterbug
Joined: Oct 2021
Posts: 96
Likes: 6
From: FRANCE
Default

Ok thanks
just one second
 
Reply
Old Mar 19, 2022 | 04:06 PM
  #4  
PLANET HARLEY's Avatar
PLANET HARLEY
Thread Starter
|
Advanced
Photogenic
Photoriffic
Shutterbug
Joined: Oct 2021
Posts: 96
Likes: 6
From: FRANCE
Default

13 volts of charge on with headlight on
 
Reply
Old Mar 19, 2022 | 04:11 PM
  #5  
PLANET HARLEY's Avatar
PLANET HARLEY
Thread Starter
|
Advanced
Photogenic
Photoriffic
Shutterbug
Joined: Oct 2021
Posts: 96
Likes: 6
From: FRANCE
Default

and 30 volts AC alternator output
 
Reply
Old Mar 19, 2022 | 04:16 PM
  #6  
WP50's Avatar
WP50
Seasoned HDF Member
10 Year Member
Photogenic
Photoriffic
Joined: Apr 2011
Posts: 6,183
Likes: 2,131
From: W. Texas
Default

Originally Posted by PLANET HARLEY
13 volts of charge on with headlight on
And this is on the 92 fatboy? A little low
If so I'd bet money your good to go.

Are you measuring at the battery ??

Ya might increase the rpm on this old a bike and see if it won't get up to closer to 14 v

WP
 
Reply
Old Mar 19, 2022 | 04:29 PM
  #7  
PLANET HARLEY's Avatar
PLANET HARLEY
Thread Starter
|
Advanced
Photogenic
Photoriffic
Shutterbug
Joined: Oct 2021
Posts: 96
Likes: 6
From: FRANCE
Default

yes 92
yes I measured at the battery the headlight is on.
 
Reply
Old Mar 19, 2022 | 04:37 PM
  #8  
WP50's Avatar
WP50
Seasoned HDF Member
10 Year Member
Photogenic
Photoriffic
Joined: Apr 2011
Posts: 6,183
Likes: 2,131
From: W. Texas
Default

Originally Posted by PLANET HARLEY
yes 92
yes I measured at the battery the headlight is on.
Ya might increase the rpm on this old a bike and see if it won't get up to closer to 14 v

13 is just a bit low now if you came back with 13.6 I'd feel better
Where were you measuring at to see 30 ac volts ??

wp
 
Reply
HD Forum Stories

The Best of Harley-Davidson for Lifelong Riders

story-0

7 Surprising Harley-Davidson Products that Are Not Motorcycles

 Verdad Gallardo
story-1

8 Best Harley-Davidson Motorcycles Ever

 Pouria Savadkouei
story-2

10 Worst Harley-Davidson Motorcycles Ever

 Pouria Savadkouei
story-3

Killer Custom's Jail Break Is The Breakout That Refused to Blend In

 Verdad Gallardo
story-4

Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?

 Verdad Gallardo
story-5

Harley-Davidson Reveals Super Cool Cafe Racer Concept

 Verdad Gallardo
story-6

Engraved Rebellion: Inside Bundnerbike's Glam Rock II

 Verdad Gallardo
story-7

10 Motorcycles You Should Never Buy

 Joe Kucinski
story-8

10 Things Harley-Davidson Needs to Fix in 2026

 Verdad Gallardo
story-9

Southpaw Super Glide: A Left-Hand-Drive 1979 Harley FXE Built to Fit the Rider

 Verdad Gallardo
Old Mar 19, 2022 | 04:51 PM
  #9  
PLANET HARLEY's Avatar
PLANET HARLEY
Thread Starter
|
Advanced
Photogenic
Photoriffic
Shutterbug
Joined: Oct 2021
Posts: 96
Likes: 6
From: FRANCE
Default


 
Reply
Old Mar 19, 2022 | 04:54 PM
  #10  
PLANET HARLEY's Avatar
PLANET HARLEY
Thread Starter
|
Advanced
Photogenic
Photoriffic
Shutterbug
Joined: Oct 2021
Posts: 96
Likes: 6
From: FRANCE
Default

they say there is a fuse
 
Reply



All times are GMT -5. The time now is 07:07 PM.

story-0
7 Surprising Harley-Davidson Products that Are Not Motorcycles

Slideshow: The bar-and-shield logo shows up on far more than motorcycles, some of the company's most unexpected products have nothing to do with riding.

By Verdad Gallardo | 2026-04-29 16:50:35


VIEW MORE
story-1
8 Best Harley-Davidson Motorcycles Ever

Slideshow: Not every Harley gets it right, but these are the ones that genuinely earned their reputation.

By Pouria Savadkouei | 2026-04-15 14:23:21


VIEW MORE
story-2
10 Worst Harley-Davidson Motorcycles Ever

Slideshow: From the troubled AMF years to modern misfires, these bikes earned reputations for reliability issues, questionable engineering, or disappointing performance.

By Pouria Savadkouei | 2026-04-01 20:01:09


VIEW MORE
story-3
Killer Custom's Jail Break Is The Breakout That Refused to Blend In

Slideshow: Killer Custom's "Jail Breaker" build focuses more on stance and visual aggression than mechanical overhaul.

By Verdad Gallardo | 2026-03-18 19:20:32


VIEW MORE
story-4
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?

Slideshow: The Swiss custom shop has taken a Harley Softail and stretched it into something so long and low that it looks closer to a rolling sculpture than a conventional motorcycle.

By Verdad Gallardo | 2026-03-07 16:15:30


VIEW MORE
story-5
Harley-Davidson Reveals Super Cool Cafe Racer Concept

Slideshow: Harley-Davidson's new RMCR concept revives the café racer formula with modern hardware-and it may be exactly the reset the company needs.

By Verdad Gallardo | 2026-03-04 12:23:37


VIEW MORE
story-6
Engraved Rebellion: Inside Bundnerbike's Glam Rock II

Slideshow: A standard cruiser becomes an intricate metal canvas in the hands of a Swiss custom house known for pushing Harley-Davidson platforms far beyond their factory brief.

By Verdad Gallardo | 2026-02-24 18:19:44


VIEW MORE
story-7
10 Motorcycles You Should Never Buy

Slideshow: There is no shortage of great motorcycles to buy, but we would avoid these ten.

By Joe Kucinski | 2026-02-19 14:50:51


VIEW MORE
story-8
10 Things Harley-Davidson Needs to Fix in 2026

Slideshow: Harley-Davidson's challenges aren't abstract; they show up in dropping shipments, shrinking dealer traffic, and strategic decisions that aren't yet translating into growth.

By Verdad Gallardo | 2026-01-13 18:33:17


VIEW MORE
story-9
Southpaw Super Glide: A Left-Hand-Drive 1979 Harley FXE Built to Fit the Rider

Slideshow: Graeme Billington's left-hand-drive Shovelhead is as much about problem-solving as it is about classic Harley form.

By Verdad Gallardo | 2025-12-30 11:27:08


VIEW MORE