My motorcycle is not charging the battery. they will honor their warranty, then we can start with a fresh battery to do testing. While the engine is running, connect the voltmeter as before. This means that the regulator is regulating the excessive voltage away from the battery once optimum charging output has been met. Once the motorcycle is on, the stator takes over and is what helps the bike run while also recharging the voltage the battery had to use to get the motorcycle started. Menu. Be in the know on whether you actually need a new motorcycle battery or not. If the battery voltage increased to above 14.8 Volts, the charging circuit is likely overcharging the battery. While you are ridding your motorcycle, the charging system provides electrical power to run electrical components and accessories. Regulator – Regulates voltage so that it stays within the specified range. • Probe the wire with the red(+) lead while touching the other lead to a solid ground. Avoid leaving the battery inside the bike while charging it, as this could damage to other components. Good idea about having an extra battery for use around camp. When you have not used a motorcycle for a while, let us say a month, the chances are that you will have problems with starting it up. Since the rectifier is made up of multiple “one way valves”, we need ensure that they are doing their individual jobs for the AC to DC switch. If the voltage starts O.K. Q. I have all sorts of electrical problems with my bike. It’s even more frustrating when you’re out for a ride and notice you’re losing power and/or the battery is completely drained when you get home. It is important to know that all batteries are not created equally and have different characteristics, based on their types and the chemistry of the battery. Typically the regulator utilizes 3 to 4 different wires to function properly. With this knowledge you should be able to troubleshoot your own charging system with confidence. Checked for shorts or opens … *Results: What you are looking for is continuity (a path) that continues through all three leads. Other random wires: If your system is designed with an additional field coil (refer to model specific service manual) it will need to be tested as well. To accomplish this switch, the rectifier is made up of diodes. There could be multiple reasons for something like this, but the likely reason it’s happening is due to the battery. *Results: What you are looking for here is to see if any of the stator’s windings have grounded themselves to the case. Ac volts goes from about 8-9 volts at low idle to 40- 50 volts at 2000- 3000 rpm. Ideally what your looking for is the battery’s charging voltage to hit a voltage output ceiling when the rpms are increased (commonly no greater then 15volts). Battery – Stores regulated DC current. It’s never a good sign when your motorcycle is struggling to stay running while you’re out for a ride. On most bikes the charging voltage runs about 14.5 Volts. If you discover that you have and open (no numeric value) or a excessively high reading. You’ll see plenty of people hook up a … No need to go running to a dealership to spend money. But because your car battery is more powerful that your motorcycle battery, it's important to be careful when charging latter with the former. Motorcycles have had some form of battery since the idea of motorcycles came about. The relationship between your motorcycle battery and engine functions much in the same way as a car battery. •The rectifier needs to be unplugged with no voltage running through it. Motorcycle battery was not charging while riding, bike died out? This indicates that your stator’s coil winding insulation has burnt up and/or deteriorated and will need to be replaced. The last and one of the most obvious ways to tell if your motorcycle battery continues to drain while riding is if you can jump start it or charge it and it works great afterwards. If you want a fast charge with high current, then its best to remove the battery first. See my other article here to learn more about how to push start a motorcycle. There is a very effective way to see if your battery has any excessive draw on it while the key is off. The car had the later 70 and up electronic ignition … This is a defense mechanism engineered in order to prevent the cable from hitting a ground and causing a spark. enough is enough!”. If the battery voltage increased to at least 14.2 Volts but not over 14.8 Volts, the charging circuit is working properly. Checked ac output from stator. Start the engine. Battery issues are completely frustrating. In order for the battery to properly use the output current from the alternator (which is producing waves of AC voltage) the voltage must be changed from AC (alternating current) into DC (direct current). Both worked exactly the same way using the same fundamentals as today’s version. These readings should be closely in range of each other. This site also participates in other affiliate programs and is compensated for referring traffic and business to these companies, link to 3 Reasons A Motorcycle Battery Will Not Jump Start. What you do depends on whether you have power where the bike is parked, and how kaput the battery is – if it’s stone dead, Optimate recommend removing the battery while its desulphation process takes place. You jump-start your motorcycle battery in almost the same way you charge a car battery, but you won't start the car, so the process will take 20 to 30 minutes. Thought stator was bad. It’s possible for the wiring to have been done wrong when these types of add-ons where installed on a motorcycle. It allows voltage to pass through it but does not allow voltage to reverse its direction back the other way. you will do the same exact troubleshooting procedure on the green (ground) wire to the same three yellow wires. This clicking sound is coming from the motorcycle trying to draw power from the battery but is unsuccessful. The “Resources” link explains how to jump start a motorcycle with a dead battery. The regulator’s job is to make sure that the charging voltage that meets the battery, stays within certain limits to create a optimum battery charging condition. Your charging system is putting out the necessary voltage to the battery during a running condition (past idle). Checked the voltage at the battery while bike running, it reads whatever the battery charge is. In which case the stator has begun to break down or is bad. If you were suspecting a battery problem because you had difficulty starting the engine, or you had problems with another electrical circuit, or the alternator warning light on the dashboard is coming on (charging system problems), your problem is not with the battery. You may also get a very high resistance reading. If your battery is charging perfectly but your motorcycle still seems to keep killing the battery. Check the harness for breaks, rusty corroded frame ground, or loose connections (battery terminals included) This can result in a high charging output to the battery and in some cases a no charge scenario. No need to go running to a dealership to spend money. 1. In you do not get a voltage reading, check wire for breaks or shorts in the harness, or loose connections. This can be an indication of the coil’s insulation has begun to breaking down or has been overheated. This needs to be 12.5volts or above for accurate testing results Or you may find it's not the battery at all and a charging system problem instead. Either way, testing is pretty much the same. Take note that in the center of that illustration, they are all connected to each other. Let me explain…. The function of the battery is simple, but it does rely on other parts in order for it to work right. • Set your multi-meter to read resistance(Ω). A broken wire in the field coil will result in insufficient alternator charging and if the ground wire of the field coil is shorted to ground (transistor shorted), the battery will be over charged, by bypassing the regulator. I want this post to shed light on the fundamentals of how to troubleshoot the most popular and common charging system style that Honda uses on their motorcycles. Yes. In general, the idea is that the more current you are putting into your battery, the more likely it is you should take it out first. → → →, Pre 1980, some bikes used these two systems as separated units. Then connect the positive cable to the positive terminal of the car battery then the negative cable to the negative terminal. Batteries aren’t able to store AC current so the regulator/rectifier converts power into a type of current the battery can store. They can also be found in the center of the alternating system like on the older CB750’s Place your Red meter lead to the red or red/white(+) wire, while placing your black lead to each of the yellow wires. • Set your multi-meter to the resistance (ohms Ω) setting. Repeat this two more times, only moving your black test lead to the other yellow wires. 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