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motorcycle battery voltage when running

no load). What Voltage Should A Motorcycle Battery Read When Running Uncategorized February 7, 2019 0 masuzi How to test a motorcycle battery revzilla should i replace my motorcycle battery how to test a motorcycle battery revzilla motorcycle battery voltages and what Technically, a motorcycle battery does charge while the motorcycle is idling though it does not provide as much amperage as when the motorcycle is at higher speeds. This is designed to have an output of about 15 volts. Now, switch your multimeter to read AC voltage. Battery: This is a huge part of your charging system. Replace the voltage regulator if the reading is higher or lower than the 13.5 to 14.5 volt range to prevent insufficient or excessive charging. You can do this by revving your motorcycle a little while you’re at an idle. 0. Moderation is key, so occasional revs to give that battery a boost should suffice. It only takes a tiny bit of maintenance once a month or so to keep it running well. Place the voltmeter leads to the battery terminals. Start the engine and check the voltage while doing so. If so could be a bad voltage regulator--if so may be overcharging battery Check voltage readings at battery should be around 14.2 with car running -- if much higher than this voltage regulator is bad. ... Actually, if a battery’s resting voltage is only 12.0 to 12.1 it means only 20 to 25% of its useful energy remains. When a motorcycle has an issue running, a safe assumption would be issues with the battery. As the rev's increase (e.g. Cannon Entities LLC is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. That excess amperage goes to power other things such as the lights, spark plugs, and other electrical components. If your battery is getting old and starting to have issues, you'll probably wonder if it has any affect on your motorcycle's performance. How can I tell if a flat car battery is charging when hooked up to a trickle charger? The main function of a motorcycle battery is to get the motorcycle started. It’s either a goner or it has been deep cycled, and a battery can only be deep-cycled a limited number of times before it is indeed dead. If you’re like me, you’ve found yourself in occasional stop and go traffic while riding your motorcycle; this means your motorcycle will be idling a lot. When your engine starts running, pull in the clutch and apply some gas. The carburetor may also have a fuel leak which leads to the engine starved from the right amount of fuel it needs to run efficiently. The car battery will not fry your motorcycle battery. On almost every motorcycle you will find a battery, used for providing power for starting the bike and for buffering an amount of electric energy. Use a battery tender – Ideally, you want to keep your motorcycle battery at 100% all the time. When your car is running the cars alternator is charging the battery, this is why you should see a higher voltage. While that is true when the bike is running, it’ll go back down to 12.6 -ish when you turn it off. A low or failing battery can cause crazy readings during your testing. If your tires start to wear and/or cup, the safety of your motorcycle is compromised. The World's Happiest DIY Motorcycle Repair Blog, Motorcycle Wiring – 10 Pieces of Advice for Your Next Project, The Perfect Hurricane Motorcycle Part 6: Portable Solar Panels, Motorcycle Wiring Simplified – The Basic Diagram, How To Identify The Mikuni Carburetor In Your Motorcycle, Metzeler ME 888 Vs. Michelin Commander II: Which Tire Is …, A Quick Guide To Motorcycle Chicken Strips. The battery is a 12.6 volt battery. Knowing how the battery is charged is important. when the bike is being ridden), the voltage level being put back into the motorcycle battery increases to around 13.5 to 14.5 volts and it's the extra power being produced when the bike is being ridden that charges the battery. The job of the Stator is to convert mechanical energy from the engine back into electricity. Revving the engine will provide additional amperage to the battery than just a simple idle, but not as much as it would during a normal ride. When turning the key to start, all lights turn off and engine won't start. Batteries can really only handle this a couple times before being unable to take a full charge again. Shift your motorcycle into neutral. We’ve discussed that the most important function of a battery on a motorcycle is to get it started. This NEEDS to be correctly charged and tested before you start and troubleshooting. Click here to learn more about what happens when you rev a motorcycle engine. Help diagnosing start up/battery drain problem. If the voltage instantly drops to 0 volts, that is also a problem. Motorcycle Battery maintenance tips. Essentially, the motorcycle is always providing more amperage and voltage than the battery currently has. As RPMs increase, the battery voltage should increase closer to 14 volts temporarily as the battery is being charged. amzn_assoc_placement="adunit0";amzn_assoc_search_bar="true";amzn_assoc_tracking_id="happywrench-20";amzn_assoc_search_bar_position="bottom";amzn_assoc_ad_mode="search";amzn_assoc_ad_type="smart";amzn_assoc_marketplace="amazon";amzn_assoc_region="US";amzn_assoc_title="Shop Related Products";amzn_assoc_default_search_phrase="motorcycle battery";amzn_assoc_default_category="All";amzn_assoc_linkid="eb9b23c213b2a78013f0801eb326cc09";amzn_assoc_rows="1"; For more information as to why a motorcycle struggles idling or sputters, see my other article by clicking here. A good battery should read between 12.4 to 12.6 volts, 12.6v being optimal. A sad fact in a motorcycle’s life is that motorcycle battery issues are generally only addressed when it is too late (i.e. Keep in mind though that if the voltage doesn’t increase at higher RPMs, this could point to an issue with the alternator. Video-Is your Harley-Davidson or other brand motorcycle seem to be cranking over slowly when starting? You can test the bike while it is off to see if the battery sits around 12.6 volts at rest, or you can run the bike and test voltages through a range of RPMs. The output from the stator on most modern bikes is three phase (hence the 3 wires) alternating current at a peak voltage well over the 12-14V DC voltage that your electrical system requres. So,... My name is Kyle Cannon and I love everything about motorcycles. Most motorcycles require a 12 volt battery. Christopher was born in a small-town NY and, over the years, owned a couple dozen different motorcycles, ranging from cruiser to enduro, Japanese to American. This sort of “test” really requires “knowing” your bike. Motorbike batteries are made up from a combination of such cells connected in series to give the required voltage. Batteries have a finite life, so try to keep track of when your last battery was installed (check for date stamp on battery). A motorcycle electrical system is created to keep a good battery topped off but is not designed to charge a dead battery. At idle, your bike will not produce enough voltage to recharge a battery, so even running the bike for a long time will not charge it reliably. While it is necessary to have one car running when trying to jump-start another car, motorbike batteries don’t require the same amount of energy, so the car should be left off for the duration of this process. However, revving a motorcycle engine too much (meaning for a long period of time, longer than five seconds per rev) then you can start wearing out the engine. (positive to positive and negative to negative). And it has to do this in order to charge the battery while the bike is running. However, there are some signs a battery is dying and needs some attention. Why Do Motorcycle Tires Cup? A battery tender for a motorcycle is a device that plugs into any standard AC wall outlet and transfers power via amperage to a motorcycles 12-volt battery to keep it charged. Revving it is just making the engine do what it’s already doing, just a little faster. Mileage Talks: How Many Miles Can Your Motorcycle Last? A good battery should not drop below 9.6 volts over 10 seconds or so. What is the voltage of a “dead” 12-volt battery is different from what is the maximum charging voltage of a 12-volt battery—11.9 and 13.2 are numbers you want to watch out for in the future. They are only called this to distinguish between other types of batteries. Lastly, the carburetor could potentially have a timing issue which means the air/fuel screw needs to be adjusted. One common misconception people believe is that a 12-volt battery is actually a 12-volt battery. He started HappyWrench in 2017 as he wanted to share his passion for motorcycles with other people. When a battery charger has been disconnected from the battery for one to two hours, a fully charged Conventional battery should read 12.6 volts (12.8 volts with Sulphate Stop) or higher. That said, we are not going to stop there. The relationship between your motorcycle battery and engine functions much in the same way as a car battery. 12.6 volts is considered a 100% charged battery, 12.4 volts is considered 75% charged, and 12.2 volts is considered 50% charged. While the starter is spinning, observe the voltage. It turned out to be a loose connection from the stator back to the battery so the motorcycle was running on battery spark. 4) If you go to start your engine and it “struggles” more than usual, it is possible your battery is not holding a sufficient charge (hovering too low in the acceptable range). A constant reading of 13.5 to 14.5 volts should be present. If the voltage drops below 9.5 volts while starting the engine, it means that one of the battery cells is … Avoid jump-starting a motorcycle with a car. Does your battery seem to be going bad? The full range of the battery is from just over 14 volts (when being charged by the bike running at high RPMs) down to 10.5 volts (under heavy load, for example, when the lights are on and the bike is being started). Stator is to convert mechanical energy from the engine is running power and battery. Click here to learn shop for all your DIY motorcycle repair information needs of issues a motorcycle to it... 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