While the battery is often the culprit of issues a motorcycle can have, it likely isn’t your problem in this case. And it has to do this in order to charge the battery while the bike is running. If the battery was dead before, it’ll go back down to whatever low voltage it had before getting started. The car battery will not fry your motorcycle battery. Moderation is key, so occasional revs to give that battery a boost should suffice. First, measure the battery voltage with the ignition switch off (i.e. Why Do Motorcycle Tires Cup? With a little TLC, you can extend the life of your motorcycle battery. However, there are some signs a battery is dying and needs some attention. Lastly, the carburetor could potentially have a timing issue which means the air/fuel screw needs to be adjusted. That said, we are not going to stop there. link to Does The Battery Affect Motorcycle Performance. 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. Use a battery tender â Ideally, you want to keep your motorcycle battery at 100% all the time. Motorcycle Battery maintenance tips. In order to start a motorcycle, you need at least 12.2 volts, or a â¦ 1) It is more than “4-ish” years old. 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 job of the Stator is to convert mechanical energy from the engine back into electricity. Then, measure the voltage from tab to tab, just like before. 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. As RPMs increase, the battery voltage should increase closer to 14 volts temporarily as the battery is being charged. If it reads below those values then your battery is not keeping a full charge. When turning the key to start, all lights turn off and engine won't start. 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. Motorcycle battery - correct voltage running and stopped? Shift your motorcycle into neutral. 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. The alternator is fitted with a regulator that charges the battery while you ride. Not starting? The battery becomes fully charged when the motorcycle is full-on running. A good battery should read between 12.4 to 12.6 volts, 12.6v being optimal. That is such a small amount that if you let your motorcycle idle for 10-15 minutes, you’re really not charging your battery all that much. 3) You have discharged your motorcycle battery completely several times. Once the motorcycle is started, the stator (or alternator) takes over and powers the electrical components on the motorcycle. With charger unhooked voltage reads 13.85. 2. It is a one-stop shop for all your DIY motorcycle repair information needs. Video-Is your Harley-Davidson or other brand motorcycle seem to be cranking over slowly when starting? 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. (positive to positive and negative to negative). 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. It should be around 12 Volts. 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. So if you didn’t have much of a problem getting your motorcycle started, you’ll know the battery is okay. 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. Is your battery giving you issues? However, itâs important to note that normal riding may not be enough to fully charge the battery â¦ They are only called this to distinguish between other types of batteries. no load). My battery is 2 years old, and I usually keep it on a battery tender. Good preventative maintenance is simply to change a battery when it gets close to the end of its serviceable life. What you are looking for is â¦ 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. While that is true when the bike is running, it’ll go back down to 12.6 -ish when you turn it off. With that being said, many may wonder if it’s good for a motorcycle to rev it like this. When the lights are on the battery seems to lose charge even when the engine is running. 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. How can I tell if a flat car battery is charging when hooked up to a trickle charger? The battery is a 12.6 volt battery. The voltage, when the engine is running, should be in the range of 13.5-14.7 volts. We know that idling does charge the battery, but not to the amount it fully needs in order to completely recharge the battery. When a motorcycle has an issue running, a safe assumption would be issues with the 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? Anon A. ... Actually, if a batteryâs resting voltage is only 12.0 to 12.1 it means only 20 to 25% of its useful energy remains. 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). When running at a normal slow cruising engine RPM, the voltage across the battery terminals should stay over 14.3 volts even with full load, like lights, heater blower, and everything else, running. 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