How to determine if your Rectifier is going bad ? - Star Motorcycle Forums: Star Raider, V-Max, V-Star, Road-Star Forum
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post #1 of 17 (permalink) Old 04-25-2015, 08:09 PM Thread Starter
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How to determine if your Rectifier is going bad ?

Hey members, Just wanted some info on the 650 rectifier .

I rode my bike last weekend and trying to start it today for a ride the battery was low. No start.

I have not changed the battery or Rectifier since I've had it ( 1 year)
Was told the battery was about a year old ( would be 2 now )

So how do you know if the rectifier needs to be replaced ?

I have heard it is common to replace it when the battery gets changed.

Update : I charged the battery and rode for a good 12 miles or so.
Bike started right back up no problem. I'm going to try it again in the morning and see if it's holding charge.

Any help on this would be sweet...

jake

2000 Vstar 650 Classic , Firethorn orange Metal flake Urethane, OEM tall Windshield, 47 Harley Tail light mod, progressive springs, hard bags painted to match w/chr. bullet accents Custom Modified rear rack/backrest, Cobra Modified exhaust w/ chrome Pencil tips, Hyper charger kit,
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post #2 of 17 (permalink) Old 04-25-2015, 08:51 PM
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Just do a voltage test.... your shop manual should tell you where it should be. I know the 1100 should be 12.8 at idle and about 14.6 at 3000 RPM, not sure about the 650

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post #3 of 17 (permalink) Old 04-25-2015, 09:18 PM Thread Starter
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Thanks Mick, I do have the shop manual and will take a look at what it shows in terms of tests related to this. Normally the bike has sat for a week and will crank right up. So this is new.

I will keep the board posted on what the out come is.

jake

2000 Vstar 650 Classic , Firethorn orange Metal flake Urethane, OEM tall Windshield, 47 Harley Tail light mod, progressive springs, hard bags painted to match w/chr. bullet accents Custom Modified rear rack/backrest, Cobra Modified exhaust w/ chrome Pencil tips, Hyper charger kit,
PRV 15, Riser mounted speakers, Chrome levers,Fringe grips, studded Leather bib with pocket, Billet Oil filter relocation kit , 3.5 PMS w/ stock pilots, mains- 122.5, Custom billet t signals
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post #4 of 17 (permalink) Old 04-25-2015, 09:57 PM
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You may want to have the battery load tested too....

Sick Mick* 2006 V Star 1100 Custom

--- Striping, lettering and paint by Sick Mick 6* Tree - 2" extended forks 21" front wheel - HK Sideburners - Progressive rear shock Pods Sick Mick solenoid delete - Spring seat - and other stuff
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post #5 of 17 (permalink) Old 04-26-2015, 08:17 AM Thread Starter
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Great idea, I have a load tester at work I can hook it to.

The battery is an interstate AGM. But no date code is on it.
I can only assume it's actual age. Plus the bike sat a lot while
going through the paint job. Rather then risk a no start away from the house I would rather check into another battery.

What is a good reliable brand of AGM thats not too expensive ?

I saw a few for $60 but is that a lot or a good deal...

2000 Vstar 650 Classic , Firethorn orange Metal flake Urethane, OEM tall Windshield, 47 Harley Tail light mod, progressive springs, hard bags painted to match w/chr. bullet accents Custom Modified rear rack/backrest, Cobra Modified exhaust w/ chrome Pencil tips, Hyper charger kit,
PRV 15, Riser mounted speakers, Chrome levers,Fringe grips, studded Leather bib with pocket, Billet Oil filter relocation kit , 3.5 PMS w/ stock pilots, mains- 122.5, Custom billet t signals
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post #6 of 17 (permalink) Old 04-26-2015, 08:55 AM
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I've had great luck with Yuasa and Scorpion. Check your local retailers and Batterystuff.com....and I'm sure there are a lot of others selling batteries. Don't be afraid to spend a fair amount on one. You usually get what you pay for.

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--- Striping, lettering and paint by Sick Mick 6* Tree - 2" extended forks 21" front wheel - HK Sideburners - Progressive rear shock Pods Sick Mick solenoid delete - Spring seat - and other stuff
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post #7 of 17 (permalink) Old 04-26-2015, 09:05 AM
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Since you say the battery is an Interstate AGM, I'd take it to the Interstate battery outlet. They can undoubtedly figure out the date code, and test the battery too.
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post #8 of 17 (permalink) Old 04-26-2015, 12:15 PM Thread Starter
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Thanks guys for the info. All of this will be determined by what this battery does. If not holding a charge or my rectifier took a dump.

I need to check up stream from the battery first, Then if need be purchase a new battery and a tender with a charge light.

My current one has no lights so it's hard to tell what it's doing.
And it's only 500 ma. Trickle and old.

2000 Vstar 650 Classic , Firethorn orange Metal flake Urethane, OEM tall Windshield, 47 Harley Tail light mod, progressive springs, hard bags painted to match w/chr. bullet accents Custom Modified rear rack/backrest, Cobra Modified exhaust w/ chrome Pencil tips, Hyper charger kit,
PRV 15, Riser mounted speakers, Chrome levers,Fringe grips, studded Leather bib with pocket, Billet Oil filter relocation kit , 3.5 PMS w/ stock pilots, mains- 122.5, Custom billet t signals
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post #9 of 17 (permalink) Old 04-26-2015, 02:16 PM
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Thumbs up Charging

Resto-A bad or weak battery can stress the charging diodes by drawing maximum charging current all the time and overheating occurs. While the engine is running(idling), and you can read at least 14v on the DC meter at the battery terminals, the charger is working correctly and I wouldn't replace it. This may take a few seconds to build to 14v and that's OK. Charger/regulators are generally very durable these days and will take some hard use as long as they are not shorted or wired incorrectly in the first place. My2cts.

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post #10 of 17 (permalink) Old 04-26-2015, 02:36 PM Thread Starter
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Well on these bikes the battery is not charging at idle speeds.

We are working on the problem and will report back soon with more details...

thanks

2000 Vstar 650 Classic , Firethorn orange Metal flake Urethane, OEM tall Windshield, 47 Harley Tail light mod, progressive springs, hard bags painted to match w/chr. bullet accents Custom Modified rear rack/backrest, Cobra Modified exhaust w/ chrome Pencil tips, Hyper charger kit,
PRV 15, Riser mounted speakers, Chrome levers,Fringe grips, studded Leather bib with pocket, Billet Oil filter relocation kit , 3.5 PMS w/ stock pilots, mains- 122.5, Custom billet t signals
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