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. 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). 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. If your battery is charging perfectly but your motorcycle still seems to keep killing the battery. 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. Batteries need to be used to stay healthy. Motorcycle Battery Maintenance. When your car is running the cars alternator is charging the battery, this is why you should see a higher voltage. The battery is there to power the electrical components of the bike when the engine is not running. We call this the open cell. And it has to do this in order to charge the battery while the bike is running. The alternator is fitted with a regulator that charges the battery while you ride. Step 5. More specifically, the carburetor may have a vacuum leak which means there’s too much air in the air-to-fuel ratio the carburetor is giving the engine. If you are experiencing poor idle while out on your motorcycle, the most likely place the issue lies is within the carburetor. So, does a motorcycle battery charge while idling? Knowing how a battery works on a motorcycle can make life a whole lot easier for any motorcyclist. The battery really has no essential function while the bike is on. How can I tell if a flat car battery is charging when hooked up to a trickle charger? However, itâs important to note that normal riding may not be enough to fully charge the battery â¦ 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. Most motorcycles require a 12 volt battery. Good preventative maintenance is simply to change a battery when it gets close to the end of its serviceable life. The battery is fully charged, but when I go to crank it, it cranks extremely slowly, then the steady clicking sound of a dead battery. Itâs 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 a battery reads 12 volts at rest, it is almost fully depleted. Once the motorcycle is started, the stator (or alternator) takes over and powers the electrical components on the motorcycle. Didn’t find what you needed in this particular post? As long as you get those several minutes in of a good run on the motorcycle, you shouldn’t have to worry about how much idling you’re doing. Battery: This is a huge part of your charging system. While it is necessary to have one car running when trying to jump-start another car, motorbike batteries donât require the same amount of energy, so the car should be left off for the duration of this process. So if you didn’t have much of a problem getting your motorcycle started, you’ll know the battery is okay. While the battery is often the culprit of issues a motorcycle can have, it likely isn’t your problem in this case. AGM batteries may have slightly higher voltage readings after a full charge. If you look at a trickle charger, most of them have a 2 amp setting or a 6 amp quick charge setting which is what your motorcycle needs at the very least to obtain a constructive charge. That excess amperage goes to power other things such as the lights, spark plugs, and other electrical components. Lately I have been having cranking issues. Continue riding your motorcycle for 15 to 30 minutes to recharge the battery. In order to start a motorcycle, you need at least 12.2 volts, or a â¦ Is your battery giving you issues? Tires are one of the most important things on any vehicle in regard to performance and safety. Then, measure the voltage from tab to tab, just like before. You must ride it to produce a load on the electrical system, or at least run the engine at a cruising RPM, for quite some time to produce the 13.5-14.5 volts required to charge the battery back up. The stator is always outputting the 13-15 amps, but the more revolutions inside the engine provides more voltage. To get a bit technical, the exact voltage is 12.6. 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. If your bike produces less than that because of a tired charging system, the lithium battery will not charge, and it â¦ the battery is already dead and/or you are stuck on the side of the road). As RPMs increase, the battery voltage should increase closer to 14 volts temporarily as the battery is being charged. Place the voltmeter leads to the battery terminals. If you take a digital reader and connect it to the battery while its running itâll say something along the lines of 13, 14, or 15 volts. link to Does The Battery Affect Motorcycle Performance. What is the voltage of a âdeadâ 12-volt battery is different from what is the maximum charging voltage of a 12-volt batteryâ11.9 and 13.2 are numbers you want to watch out for in the future. If the voltage drops below 9.5 volts while starting the engine, it means that one of the battery cells is â¦ This NEEDS to be correctly charged and tested before you start and troubleshooting. Batteries can really only handle this a couple times before being unable to take a full charge again. Q. I have all sorts of electrical problems with my bike. 3) You have discharged your motorcycle battery completely several times. 2. With a little TLC, you can extend the life of your motorcycle battery. Perform a current draw test 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. While that is true when the bike is running, it’ll go back down to 12.6 -ish when you turn it off. 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. Posted in automobile Tagged 12 volts , voltage Motorbike batteries are made up from a combination of such cells connected in series to give the required voltage. This sort of “test” really requires “knowing” your bike. 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. First, measure the battery voltage with the ignition switch off (i.e. Motorcycle battery - correct voltage running and stopped? 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. The battery becomes fully charged when the motorcycle is full-on running. On a good battery, the voltage will drop to around 10 to 11 volts as you start the engine. Batteries can last for several years before going bad. If you’re searching the query about whether or not a motorcycle charges the battery during an idle, you may have run into issues during idling. 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. When your engine starts running, pull in the clutch and apply some gas. This site is owned and operated by Cannon Entities LLC. It is actually the alternator’s job to charge the battery. That said, we are not going to stop there. A good battery should read between 12.4 to 12.6 volts, 12.6v being optimal. This is done by either keeping it in a neutral gear and twisting the throttle to 3,000-4,000 RPM or adjusting the air/fuel screw on the carburetor so it has a higher idle. A good battery should not drop below 9.6 volts over 10 seconds or so. What Every Rider Should Know. The main function of a motorcycle battery is to get the motorcycle started. A motorcycle electrical system is created to keep a good battery topped off but is not designed to charge a dead battery. The battery is a 12.6 volt battery. In 1999 I was riding a rented Harley that diedabout four hours after leaving the rental office. 6. To check for voltage, the motorcycle must be running and should be at about 2000 rpm. The starter should be running at normal speed. 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. Content is king and will continue to be rolled out. Through the system of the stator, the battery is recharged so it can start the battery again in the future. For more information as to why a motorcycle struggles idling or sputters, see my other article by clicking here. A healthy motorcycle charging system puts out about 14 volts at 2,000 rpm, and a lithium battery needs between 13 and 14 volts to charge. 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. This might remedy the problem; otherwise, you may need to replace. Use a battery tender â Ideally, you want to keep your motorcycle battery at 100% all the time. Avoid jump-starting a motorcycle with a car. Moderation is key, so occasional revs to give that battery a boost should suffice. So,... My name is Kyle Cannon and I love everything about motorcycles. If it reads below those values then your battery is not keeping a full charge. There are a few things you can do if you wish to provide a little bit more amperage to your battery if you find yourself doing a lot of city driving and have to idle your bike frequently. But it is such a small amount of charge that it will not be able to top off a battery, especially a battery that is about dead. Anon A. Batteries have a finite life, so try to keep track of when your last battery was installed (check for date stamp on battery). A healthy 12 volt motorcycle battery should maintain a range from 9.5 - 10.5 volts under the load for a good 30 seconds straight. Help diagnosing start up/battery drain problem. Now, switch your multimeter to read AC voltage. They can be expensive, so it makes sense that a rider will do everything they can to prolong the life of the battery on their bike. We think of motorcycle batteries as being 12V, but they actually hold more and more is required to start the bike. Not starting? Gases from car batteries. It only takes a tiny bit of maintenance once a month or so to keep it running well. With that being said, many may wonder if it’s good for a motorcycle to rev it like this. The voltage, when the engine is running, should be in the range of 13.5-14.7 volts. After a day on the charger the battery measured 14.88 volts with charger attached. It should be around 12 Volts. Most motorcycles have something called a stator. The car battery will not fry your motorcycle battery. 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. If you intend on doing this for longer periods of time or doing it several times in one day, be sure to give the motorcycle a good few revs while it’s stationary so you can ensure that battery gets the charge it needs. You can do this by revving your motorcycle a little while you’re at an idle. The battery is a 12.6 volt battery. If you take a digital reader and connect it to the battery while its running it’ll say something along the lines of 13, 14, or 15 volts. Video-Is your Harley-Davidson or other brand motorcycle seem to be cranking over slowly when starting? Knowing how the battery is charged is important. If your tires start to wear and/or cup, the safety of your motorcycle is compromised. If you have any comments, questions or have other ideas, please reach out via the Contact Page. For example, a fully charged battery at rest should be between 12.6 and 12.75 volts. 2. Most motorcycles have something called a stator. 1) It is more than “4-ish” years old. 8. If you are guilty of not riding, take your motorcycle out for a long ride, including a nice stretch at highway speed. When the lights are on the battery seems to lose charge even when the engine is running. Okay that’s it for sleuthing on your motorcycle battery. Check out the HappyWrench Motorcycle Repair Link Database. What my article should tell you is if the bike is generating power and the battery is holding power. When I first started riding motorcycles, I would always look at the battery first if any of my bikes had trouble starting. It turned out to be a loose connection from the stator back to the battery so the motorcycle was running on battery spark. Mileage Talks: How Many Miles Can Your Motorcycle Last? However, there are some signs a battery is dying and needs some attention. Keep in mind though that if the voltage doesn’t increase at higher RPMs, this could point to an issue with the alternator. With charger unhooked voltage reads 13.85. When a motorcycle has an issue running, a safe assumption would be issues with the battery. If this system was in a restored 1966 GT coupe, I would probably change the regulator to reduce maximum alternator voltage. Hook up your DVOM in the same manner you did for the standing voltage test, and have an assistant thumb the starter. There are some basic principles about the battery that are easy to follow, but other parts can be a bit more complicated. This is designed to have an output of about 15 volts. Revving it is just making the engine do what it’s already doing, just a little faster. Say you are stuck in stop-and-go traffic, you’ll still be using the throttle several times to move the bike forward those few feet. Does The Battery Affect Motorcycle Performance? 5) Use a multi-meter and test your battery’s voltage range. You may ask yourself that if a regular run and normal RPM’s is what charges the battery, what will constant idling do and will it help the battery at all? 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). During a normal ride, a motorcycle provides about 13, 14, or 15 amps while idling only provides less than 1 amp. The job of the Stator is to convert mechanical energy from the engine back into electricity. If the battery was dead before, it’ll go back down to whatever low voltage it had before getting started. Similarly, you may just be starting up your bike to brush off some dust and not really need to take it anywhere. 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. By your bike just sitting there idling, you’re probably putting in less than one amp. During an idle, the stator is outputting a small amount of excess amperage that will provide that little charge to the battery, but not enough to do a full complete charge. If the voltage instantly drops to 0 volts, that is also a problem. Why Do Motorcycle Tires Cup? While the starter is spinning, observe the voltage. When turning the key to start, all lights turn off and engine won't start. Slow to turn over the bike? ... Actually, if a batteryâs resting voltage is only 12.0 to 12.1 it means only 20 to 25% of its useful energy remains. Start the engine and check the voltage while doing so. A sad fact in a motorcycle’s life is that motorcycle battery issues are generally only addressed when it is too late (i.e. The relationship between your motorcycle battery and engine functions much in the same way as a car battery. It is a one-stop shop for all your DIY motorcycle repair information needs. He started HappyWrench in 2017 as he wanted to share his passion for motorcycles with other people. Next, start the bike and run the engine at about 2000 rpm and measure the battery voltage again. A low or failing battery can cause crazy readings during your testing. You ride, start the bike is generating power and the battery 10 or. Assumption would be issues with the battery becomes fully charged when the at. If a flat car battery is okay repair information needs system is created to keep your motorcycle battery engine. 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