... 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. 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. Batteries can last for several years before going bad. So, does a motorcycle battery charge while idling? What Every Rider Should Know. 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. Does The Battery Affect Motorcycle Performance? 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. The battery is a 12.6 volt battery. Most motorcycles have something called a stator. 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"; 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. 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. (The procedure for measuring the battery voltage was previously described in the multimeter section.) Knowing how a battery works on a motorcycle can make life a whole lot easier for any motorcyclist. Gases from car batteries. 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. 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. 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. One common misconception people believe is that a 12-volt battery is actually a 12-volt battery. After a day on the charger the battery measured 14.88 volts with charger attached. It should be around 12 Volts. If the battery begins to hold and then steadily drops in voltage, there is a problem. 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 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. While that is true when the bike is running, it’ll go back down to 12.6 -ish when you turn it off. Start the engine and check the voltage while doing so. When the lights are on the battery seems to lose charge even when the engine is running. In moderation, revving a motorcycle engine isn’t bad. It turned out to be a loose connection from the stator back to the battery so the motorcycle was running on battery spark. 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. If the battery was dead before, it’ll go back down to whatever low voltage it had before getting started. While the battery is often the culprit of issues a motorcycle can have, it likely isn’t your problem in this case. When a motorcycle has an issue running, a safe assumption would be issues with the battery. 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. You can do this by revving your motorcycle a little while you’re at an idle. What Every Rider Should Know. Car batteries have far more capacity than motorcycle batteries. Lastly, the carburetor could potentially have a timing issue which means the air/fuel screw needs to be adjusted. Anon A. It is actually the alternator’s job to charge the battery. The battery is there to power the electrical components of the bike when the engine is not running. 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). 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. 5) Use a multi-meter and test your battery’s voltage range. Use a battery tender – Ideally, you want to keep your motorcycle battery at 100% all the time. If you enjoyed this blog post, please like or share on Facebook, tweet on Twitter, or like on Instagram. 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. He started HappyWrench in 2017 as he wanted to share his passion for motorcycles with other people. With that being said, many may wonder if it’s good for a motorcycle to rev it like this. Most motorcycles have something called a stator. If the voltage instantly drops to 0 volts, that is also a problem. 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. Your motorcycle functions either off of a 6-volt (early 60s-70s) or a 12-volt system. This is designed to have an output of about 15 volts. The word revving is short for revolutions per minute that’s happening inside the engine. With ignition on and engine not started it measures 12.85 dropping rapidly to 12.70 within 15 seconds. A constant reading of 13.5 to 14.5 volts should be present. There are some basic principles about the battery that are easy to follow, but other parts can be a bit more complicated. 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. The primary battery voltage is dictated by the chemistry of the lead acid cell. We call this the open cell. While the starter is spinning, observe the voltage. The job of the Stator is to convert mechanical energy from the engine back into electricity. Perform a current draw test (positive to positive and negative to negative). 3) You have discharged your motorcycle battery completely several times. This is the proper voltage that will allow the battery to recharge properly. link to Does The Battery Affect Motorcycle Performance. This sort of “test” really requires “knowing” your bike. Not starting? And it has to do this in order to charge the battery while the bike is running. Knowing how the battery is charged is important. When I first started riding motorcycles, I would always look at the battery first if any of my bikes had trouble starting. 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. This blog is where I report everything I’ve learned about motorcycles and what I continue to learn. Motorcycle Battery Maintenance. 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. Lately I have been having cranking issues. A lot of riders are aware that the battery is charged while the motorcycle is running, but some wonder if idling provides the same charge. Myths About Engine Coolant and When to Replace It. 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. Video-Is your Harley-Davidson or other brand motorcycle seem to be cranking over slowly when starting? 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. This NEEDS to be correctly charged and tested before you start and troubleshooting. 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. Most motorcycles require a 12 volt battery. 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? They are only called this to distinguish between other types of batteries. Step 5. Then, measure the voltage from tab to tab, just like before. 2) You have been regularly letting your bike sit for long periods without running it (a motorcycle battery will lose about 1% of its charge per day when not run). Now, switch your multimeter to read AC voltage. Q. I have all sorts of electrical problems with my bike. However, there are some signs a battery is dying and needs some attention. If you have any comments, questions or have other ideas, please reach out via the Contact Page. This site is owned and operated by Cannon Entities LLC. Why Do Motorcycle Tires Cup? If a battery reads 12 volts at rest, it is almost fully depleted. This might remedy the problem; otherwise, you may need to replace. When turning the key to start, all lights turn off and engine won't start. A good battery should read between 12.4 to 12.6 volts, 12.6v being optimal. Tires are one of the most important things on any vehicle in regard to performance and safety. Understanding this concept may seem a bit complicated, but if you keep reading I can explain exactly what happens with the battery during an idle and what you can do to optimize the power your motorcycle provides. If a battery reads 12 volts at rest, it is almost fully depleted. Didn’t find what you needed in this particular post? Motorbike batteries are made up from a combination of such cells connected in series to give the required voltage. If your bike produces less than that because of a tired charging system, the lithium battery will not charge, and it … So if you didn’t have much of a problem getting your motorcycle started, you’ll know the battery is okay. The battery really has no essential function while the bike is on. By your bike just sitting there idling, you’re probably putting in less than one amp. Keep in mind though that if the voltage doesn’t increase at higher RPMs, this could point to an issue with the alternator. Batteries need to be used to stay healthy. It only takes a tiny bit of maintenance once a month or so to keep it running well. Slow to turn over the bike? On a good battery, the voltage will drop to around 10 to 11 volts as you start the engine. A low or failing battery can cause crazy readings during your testing. 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. 12.6 volts is considered a 100% charged battery, 12.4 volts is considered 75% charged, and 12.2 volts is considered 50% charged. If this system was in a restored 1966 GT coupe, I would probably change the regulator to reduce maximum alternator voltage. 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