Maintain your Battery and check your charging system!
9 times out of 10 the infer why your bike won't start is usually because of the battery health or loose connections. A charging principles failure is less likely but is still possible.
Automatic Motorcycles
I will talk about both of them here.
Schumacher SC-1200A SpeedCharge 12/8/2 Amp Charger/Maintainer/Starter/Tester Best
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Schumacher SC-1200A SpeedCharge 12/8/2 Amp Charger/Maintainer/Starter/Tester Feature
- 12 Amp fast charge to monitor battery condition and prevent battery damage
- 8 Amp medium charge to self-adjust charge rate and keep the battery in peak condition
- 2 amp slow charge to charge small and maintain large batteries
- 50 Amp clamps for top and side-mounted battery posts
- Electronic push button controls switches for selection of display mode, charge rate or battery type and retractable handle for easy portability and storage
Schumacher SC-1200A SpeedCharge 12/8/2 Amp Charger/Maintainer/Starter/Tester Overview
Schumacher SC-1200A functions as a charger, maintainer and tester with fully automatic microprocessor control. With 12Amp fast charge, it monitors battery condition and adjusts charge rate downward to prevent battery damage. With 8 Amp medium charge, it self-adjusts charge rate and keeps the battery in peak condition. 2 Amp slow charge to charge small and maintain large batteries. 50 Amp clamps are used for the top and side-mounted battery posts. This charger also features electronic push button control switches for different selections of display mode, charger rate or battery type. It also features a retractable handle for easy portability and storage.Schumacher SC-1200A SpeedCharge 12/8/2 Amp Charger/Maintainer/Starter/Tester Specifications
The Schumacher SC-1200A SpeedCharge is a fully automatic battery charger that uses advanced technology to charge up to twice as fast as conventional chargers. It offers 2-, 8-, and 12-amp charging modes to efficiently charge and maintain connected batteries. The 50-amp clamps are compatible with both top and side-mounted battery posts. Its easy-to-read LED indicators show battery charge status at a glance. Quickly charge and maintain conventional automotive batteries, deep-cycle, AGM, and gel cell batteries.
Multiple Charging Modes
Choose from 2-amp, 8-amp, and 12-amp charging modes to quickly charge all types and sizes of batteries. In 12-amp Fast Charge mode, the charger monitors battery condition and adjusts charge rate downward to prevent battery damage for car, truck, marine, RV, and farm equipment batteries. 8-amp Medium Charge is a self-adjusting charge rate that's ideal for everyday charging needs and for keeping your battery in peak condition. 2-amp Slow Charge is a trickle setting for charging and maintaining small batteries, such as those for motorcycles, ATVs, snowmobiles and lawn tractors.
Electronic Push Button Controls
The SC-1200A features easy-to-feel switches for selection of Charge Rate or Battery Type. Choose between regular, deep-cycle, or AGM battery type, while selecting Fast, Medium, or Slow Charge.
Sturdy, Built-In Handle
The built-in, retractable handle serves as convenient cord wrap for the 50-amp clamps and power cord, in addition to providing easy portability.
Microprocessor Controlled
Microprocessor Controlled Technology with multi-stage charging lets the Schumacher SC-1200A deliver added precision, safety, and battery life. This technology lets you charge your motorcycle, car, or utility vehicle batteries up to 2x faster than using conventional chargers.
Fully Automatic Operation
The SC-1200A automatically switches from Continuous Charge to Float-Mode Monitoring, which allows the charger to maintain the battery when fully charged. The SC-1200A resumes continuous charging when the battery becomes discharged.
Technical Specifications
- Input Voltage: 120V AC
- Output Voltage: 12VDC
- Output Power: 2A/8A/12A continuous
- Amperage Control: Push-button
- RoHS Compliant: Yes
- Energy Star Compliant: No
- Certifications: UL, CUL
- Warranty: 5 Year
- Dimensions: 7.6" x 3.5" x 9.8"
- Weight: 3.1lbs
Customer Reviews
*** Product Information and Prices Stored: Jan 07, 2012 18:17:06
First look at your battery connections. Check for obvious and easiest to fix problems first. A loose connection, poor ground etc. Will likely cause intermittent doing of the starting and charging systems. If you find a loose relationship and/or corrosion, clean the connections with a wire brush.
Before re-attaching apply a miniature grease to the sense points. The grease helps to prevent any of the white corrosion residues construction up colse to the battery terminals.
Try and start her up now. You still have a problem? Go down to the mall and buy yourself a small electronic multimeter. (Make sure it has both Ac and Dc volt functions, as well as a continuity (or Ohms)function. Pull out the battery and set it on a counter. Set your multimeter to Dc volts. Quantum the Battery voltage by placing the red lead on the obvious and the Black on the negative.
The voltage read should be colse to 12.5 volts (higher is Ok) If the voltage is less than this it may indicate a poor battery. Consideration I say, "may" here because the bike's charging principles might be at fault. In this case the battery will most likely be Ok.
Confirm that the electrolyte level in each cell of the battery is good. Add distilled water only to cell's with a low level. (Obviously you cannot add water to a maintenance free battery) charge the battery overnight with a slow charger only. Motorcycle batteries cannot deal with a fast charge. Make sure the charger only charges at a rate of 2 amps or less.
Install the battery and try and start her again. If she still won't go buy a new battery and your question will likely be fixed. If she starts and runs like a charm, then you have to find out why the battery went dead. You need to check the charging system.
With the motor running, place the multimeter leads on the battery. Rev the motor a little. The principles voltage should rise with motor Rpm. A voltage of colse to 13.5 to about 14.5 should be displayed. If the voltage stays constant and/or is slowly decreasing, or if the voltage rises above 14.7 volts the charging principles is not functioning.
What do you do now? You have to check two things. The Stator and the Regulator. The stator creates an Ac voltage. The regulator changes the Ac to Dc voltage and also maintains that voltage at the proper level.
The Stator can be checked with the Ohms function on your meter. Locate and remove the plug for the stator on the front of the motor block. You will see two or three pins inside.
Set the meter for low Ohms, and Quantum the continuity between these pins. 5 Ohms or less is what you are seeing for here. Set the meter to the top setting. With 1 lead attached to a metal part of bike check for continuity to each pin. You meter should read infinite, or no continuity. If these tests check out then your stator is fine. If there is a fault in any of these tests, then see your dealer
The regulator is the easiest of all to check. The regulator is made of solid state electronics and can't be opened. Replace the regulator if all things else on the charging principles checks out or if there is an overcharging situation.
On most Harley's you will not know if the charging principles is starting to fail. The evidence shows up when you have dim lights or she just won't start. There are aftermarket accessories that you can setup on your bike that will tell you the current state of the charging system.
Save yourself some bucks here!! With a easy multimeter available from any Electronics parts store you can troubleshoot your charging principles and check your battery and most likely fix any problems yourself.
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