Voltage of Battery: Could It Be Causing Electrical Component Burn Out?

V-Star Voltage

Question:

I have a over charging problem. My battery gets so hot that it totally shorts out and blows everything electrical. Headlight, tail light, speedometer, fuel pump, fuel pump relay.

Had it tested and the charging @13.8 vdc @ 5000 RPM. with loads on 11.4 amps. Have not had it checked under a load. Any advice would be helpful. Thanks. {Richard, California, USA - 2000 Yahama V-Star 1100, XVS1100}

Answer:

The battery voltage charging values you describe are ok. There are within specifications. It sounds like your V-Star’s Rectifier – Regulator, also know as the voltage regulator is faulty.

When a rectifier – regulator stops functioning properly, it allows the voltage running through bike to spike well over 13v (13 volts). These power spikes burn out your electrical components.

Light bulbs in your headlight and tail lights would probably be the first to go. The tiny filaments are sensitive.

Fortunately, the rectifier-regulator used on your V-Star is still available, as it is utilized in many Yamaha power sports products. The OEM Yamaha part number is 5BN-81960-00-00.

You should expect to pay around $100 for a new one.

A quick search of eBay

shows that used, it will run about $50.

Search for both the part number and the word used. Also, be sure to check the Include Description Box

Need more free ATV or motorcycle repair information?

Q&A: Leaking Fuel Valve?
Q&A: Leaking Gas Valve flooding engine?
Q&A: Battery Maintenance
Q&A: Battery Types
Q&A: Carb Jetting page 1
Q&A: Carb Jetting page 2
Q&A: Aftermarket Exhaust System
Q&A: Carb Float Needle
Q&A: Carburetor Identification

Q&A: Honda Points
Q&A: Rim Bolt Pattern
Q&A: CB750F Identification
Q&A: Broken Speedometer Cable End
Q&A: Suzuki LT-Z400 QuadSport Tank Removal
Q&A: Motorcycle Trike Conversion
Q&A: Honda Rancher Reverse Problem
Q&A: Kawasaki Z650SR Fuel Mix problem
Q&A: RM80 Piston Position

Q&A: LT80 Engine Oil Issues

href="http://www.weeksmotorcycle.com/cable_break_in.html">Q&A: Clutch Cable Break In period?

href="http://www.weeksmotorcycle.com/cooling_fan_problem.html">Q&A: Cooling Fan Problem?

href="http://www.weeksmotorcycle.com/oil_change_XV920.html">Q&A: 1983 XV920 Virago Oil Change

href="http://www.weeksmotorcycle.com/atc90-spark-plug.html">Q&A: ATC90 Spark Plug question

href="http://www.weeksmotorcycle.com/nighthawk-750.html">Q&A: Nighthawk 750 Spark Plug Gap

href="http://www.weeksmotorcycle.com/bike_registration.html">Q&A: Bike Registration Problem

href="http://www.weeksmotorcycle.com/hypercharger-instructions.html">Q&A: Lost Hypercharger Instructions

href="http://www.weeksmotorcycle.com/bourget-charging-system.html">Q&A: Bourget Charging System

href="http://www.weeksmotorcycle.com/cleaning-spark-plugs.html">Q&A: Can Spark Plugs be cleaned?

href=" http://www.weeksmotorcycle.com/wheel-bearing.html">Q&A: Wheel Bearing Removal for 1976 CB750K

href=" http://www.weeksmotorcycle.com/yz490-kick-start.html">Q&A: 1982 YZ490 Kick Start

href=" http://www.weeksmotorcycle.com/goldwing.html">Q&A: 1979 GL1000 Goldwing Points Gap

href=" http://www.weeksmotorcycle.com/cable-routing.html">Q&A: 1982 GS650GLZ Cable Routing Problem

href="http://www.weeksmotorcycle.com/ether.html">Q&A: Ether vs. Carb Clean

href="http://www.weeksmotorcycle.com/atv-ignition.html">Q&A: ATV Ignition Trouble

href="http://www.weeksmotorcycle.com/backfire.html">Q&A: John Deere backfiring

href="http://www.weeksmotorcycle.com/phantom-200.html">Q&A: Honda Phantom 200 Tire Pressure

href="http://www.weeksmotorcycle.com/clutch-slip.html">Q&A: TRX350 Clutch Slip possible causes

href="http://www.weeksmotorcycle.com/timing-marks.html">Q&A: LTF250 Cam Chain Installation & Timing Marks
Q&A: Demon X pit bike clutch trouble

href="http://www.weeksmotorcycle.com/tire-size.html">Q&A: OK to Increase Tire Size?

href="http://www.weeksmotorcycle.com/rv125.html">Q&A: RV125 Lost Keys

href="http://www.weeksmotorcycle.com/gpz550.html">Q&A: 1981 GPZ550 flywheel cover

href="http://www.weeksmotorcycle.com/yamaha-badger.html">Q&A: 2000 Yamaha Badger : Hard to start

href="http://www.weeksmotorcycle.com/cb360t.html">Q&A: 1975 CB360T Replacement Tire

href="http://www.weeksmotorcycle.com/cb750.html">Q&A: Vintage CB750 Chain Size

href="http://www.weeksmotorcycle.com/lta500f-vinson.html">Q&A: LTA500F Vinson Leaky Fuel Petcock

href="http://www.weeksmotorcycle.com/rancher.html">Q&A: TRX350 Rancher Hard Shifting

href="http://www.weeksmotorcycle.com/rectifier.html">Q&A: Replacement Rectifier

href="http://www.weeksmotorcycle.com/gs500f.html">Q&A: GS500F Turn Signals

href="http://www.weeksmotorcycle.com/idle.html">Q&A: Suzuki Quad Poor Idle

href="http://www.weeksmotorcycle.com/carb.html">Q&A: Yamaha Wolverine cracked Carb top

href="http://www.weeksmotorcycle.com/cold-start.html">Q&A: Vulcan Classic VN1600 Cold Start issues

href="http://www.weeksmotorcycle.com/no-power.html">Q&A: 1980 GS1000 with No Power

href="http://www.weeksmotorcycle.com/octane.html">Q&A: High Octane Fuel

href="http://www.weeksmotorcycle.com/water.html">Q&A: Suzuki Bandit 1200 Water in the Oil

href="http://www.weeksmotorcycle.com/vibration.html">Q&A: Suzuki LT250 Vibration and Clutch Slip

href="http://www.weeksmotorcycle.com/breather-hose.html">Q&A: Rancher with Oil in the Air Box

href="http://www.weeksmotorcycle.com/brake-master.html">Q&A: Honda NTV 650 Deauville with Brake Master Cylinder problem

href="http://www.weeksmotorcycle.com/oil-filter.html">Q&A: Virago Oil Filter Location

href="http://www.weeksmotorcycle.com/intermittent-spark.html">Q&A: GSX-R1100 with Intermittent Spark

href="http://www.weeksmotorcycle.com/v-star.html">Q&A: V-Star 1100 Brake Light Wiring

href="http://www.weeksmotorcycle.com/dyna-s.html">Q&A: GoldWing 1000 Dyna S Ignition

href="http://www.weeksmotorcycle.com/trail-90.html">Q&A: Honda Trail 90 CT designation?

href="http://www.weeksmotorcycle.com/pw50.html">Q&A: Yamaha PW50 runs on full throttle only

href="http://www.weeksmotorcycle.com/filter-cover.html">Q&A: 1996 Virago Oil Filter Cover

href="http://www.weeksmotorcycle.com/shock-tension.html">Q&A: ’03 Honda Rear Shock Tension

href="http://www.weeksmotorcycle.com/xv920mk.html">Q&A: Yamaha XV920MK Virago Exhaust Swap

href="http://www.weeksmotorcycle.com/engine-swap.html">Q&A: GSX600 Katana Engine Swap

href="http://www.weeksmotorcycle.com/timing.html">Q&A: Vintage CT90 Timing Troubleshooting

href="http://www.weeksmotorcycle.com/code.html">Q&A: Unknown Euro Honda Engine Code

href="http://www.weeksmotorcycle.com/rc09.html">Q&A: Venezuelan Honda Code = RC09

href="http://www.weeksmotorcycle.com/virago-750.html">Q&A: Virago 750 Throttle Issues

href="http://www.weeksmotorcycle.com/boulevard.html">Q&A: Boulevard C50 Engine Guards

href="http://www.weeksmotorcycle.com/cr125.html">Q&A: Smoking CR125

href="http://www.weeksmotorcycle.com/valve-spring.html">Q&A: CB750K Valve Spring Failure

href="http://www.weeksmotorcycle.com/v65.html">Q&A: V65 Engine Shut Off

href="http://www.weeksmotorcycle.com/voltage.html">Q&A: V-Star 1100Voltage too high?

href="http://www.weeksmotorcycle.com/cable-clip.html">Q&A: Honda CT90 Cable Clip Dilemma

Weeks Motorcycle Home

SBI!

Salvage & Junkyards

Classified Listings

Motorcycle Pages

ATC, ATV & Quad Pages

Search Pages

Events

Online Shopping

Just for Fun

Business Stuff

V-Star Voltage

Question:

Answer:

Need more free ATV or motorcycle repair information?