If your reg/rec isn't regulating voltage properly it might be sending too much voltage into the motorcycle's battery. AGM batteries may have slightly higher voltage readings after a full charge. However, more important … Maybe your voltage regulator ain’t regulatin’. The rate of self-discharge depends on ambient temperature and battery type. RevZilla photo. These temperatures can be reached if the battery is stored in a garage or shed in hot weather. The Rectifier/Voltage regulator is often a separate item. Here we have the two main styles of multimeter. If voltage drops below 13.8 the battery will not fully charge. For example, a battery that has just been subject to prolonged cranking will receive a higher amperage output from the alternator than if the battery were fully charged. This type of DVOM will "figure out" the voltage scale on its own, so to test a moto battery, all I have to do is turn the knob to the "V." On the meter to the right, the RevZilla house junker, I have to select the scale, so it gets turned to the "20" scale on the voltage portion of the meter, which is indicated with (surprise!) Note that this isn’t the “right” way to do this, but it’s another clue to help you confirm or deny your battery’s health. In real terms, it’s that initial burst of power required to start your motorcycle. CCA: Technically, the CCA is the number of amps your battery supplies at 7.2 volts … When to Change Your Motorcycle Battery & Understanding Battery Voltage Electrical 0 Christopher A sad fact in a motorcycle’s life is that motorcycle battery issues are generally only addressed when it is too late (i.e. For example, a 12AH battery can produce one amp of current flow for 12 hours, or two amps for six hours. See our Is your sidestand up? Low state-of-charge can be caused by short trips that aren’t long enough for the vehicle’s charging system to recharge the battery. No meaningful charge. your ZillaCash Rewards on a future order with us! If it ran fine on a 20A maximum supply, then your 22A battery will also be fine. the battery is already dead and/or you are stuck on the side of the road). See what our customers are saying about us: Earn $5 for every qualified $100 you spend. So you're ok with 1-2 amps over your original specs, but putting a 12A battery instead of your 6A might be asking for trouble. However, if the voltage drops to something below 1.1V is already a dead battery. Who knows? (Does the bike have a parasitic draw that’s normal, like a clock or blinking security alarm light on it?). During a normal ride, a motorcycle provides about 13, 14, or 15 amps while idling only provides less than 1 amp. 30 percent. A ‘6v’ battery is comprised of three cells giving a total voltage across it’s terminals of 3 x 2.1v = 6.3 volts. Did you know your key fob (if equipped) might use a battery? Common battery Ah ratings are 10,12, 14,16,18,24. For a battery that is of the standard quality from manufacturers, the value you get (on average) is usually a rate of 45-amperage per hours in terms of potential capacity. (If you have an autoranging meter, just go to “V,” because you won’t have a scale.) This battery (and bike!) This lithium-ion motorcycle battery charger makes a good choice as the charger and maintainer. To keep the battery’s capacity high enough to operate the starter it will have to be charged with a battery charger when the vehicle is not in use—about once per month for a Conventional battery depending on temperature. Most 12V bike batteries increase in amp-hours in increments of 2A. A chemical by-product of this process is lead sulphate that coats the battery plates within each cell reducing its surface area. A good battery should not drop below 9.6 volts over 10 seconds or so. So the Watts would be: … You may use a voltmeter to test how much power is left in your alkaline batteries. If you have not, your starter may be drawing an unacceptable amount of current, or you may have bad or corroded battery cables. But maybe it's not the one you suspect. Bad batteries place a heavy burden on a bike’s charging system. 1.Battery voltage is (off charge and stable) >12.7V 2.Fully charged battery voltage never drops <10.5V during full speed start attempts. Caution: Always wear safety glasses when handling batteries and charge them in a well-ventilated area. However, modern battery cases are made of polypropylene plastic and can be stored on concrete without any concern for excessive self-discharge. With a larger battery such as yours we would recommend a marine 12v 10 … Batteries with an open circuit voltage below 11.5 volts may require a special charger and procedures to recharge. Most automotive types of battery chargers are not suitable due to higher current output. A weak, dim headlight is an excellent indicator your battery’s not up to the task of starting your freedom machine. This causes the battery to discharge or produce electrical energy. The larger battery has more potential for work than the smaller battery. Once a battery drops below 12.4 volts, your bike will struggle to start, and at under 11.8 volts, 12 volt batteries … Membership Options. charging the battery of a motorcycle Although voltage drop can occur due to many reasons, we’re going to share a couple of reasons that might be useful for you. If you've got one, refer to your battery manufacturer's recommendations.). Turn the multimeter on to the 20V DC section of the scale. Redeem Amps and Volts: When you're choosing a charger, the volts have to match the volts of your battery (i.e., a 12V battery needs a 12V charger). If the battery begins to hold and then steadily drops in voltage, there is a problem. When the battery loses voltage, it happens due to the weak cells, state of charge, and the load connected to it. Even though you are testing a 12-volt battery, you should know that a battery that is truly 12.0 volts is a boat anchor. 10 percent. Put the Red probe on the the positive (+) terminal and Black to negative (-) earth terminal and check the initial Battery voltage. If you have a load tester (a "toaster," so named because electrical energy is converted to heat, making the device quite warm when in use), now is the time to use it. A common misconception about battery storage is that if one is left on a concrete floor it will self-discharge rapidly. The battery is a new battery, so it shouldn't have any problems. The same battery stored at 40ºC loses 50% of its capacity in 4 months. For instance, at C/5 a battery might safely provide 26.8 amp hours. 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. Jump to Latest Follow 1 - 7 of 7 Posts. Sometimes replacing a battery is financially painful, but the right thing to do. When charging amperage exceeds the level of the natural absorption rate, the battery may overheat, causing the electrolyte solution to bubble creating flammable hydrogen gas. Hook up your DVOM in the same manner you did for the standing voltage test, and have an assistant thumb the starter. Battery Discharging & Charging Characteristics for Motorcycle and Powersport batteries. Then I put my battery on my Harley Davidson brand 750 mAh tender. Any tap installed along the pipe can be considered as ‘load’. RevZilla photo. The starter should be running at normal speed. (Lithium batteries spring to mind immediately as a battery that has a different usage and test scenario. Most modern motorcycle batteries can recover from sub 11v using the correct type of charger. $42.99. This means that is supplies 26.8 amps in the duration of 5 hours without dropping off. A $100 battery pales in comparison to the $500 you might have to spend to replace a stator that your battery wiped out. Try charging it, but it might be toast. At temperatures above 55°C self-discharge is even more rapid. RevZilla photo. The electrical energy used to charge a battery is converted back to chemical energy and stored inside the battery. Find out why your battery went bad! The electrolyte solution contains charged ions, made up of sulphate and hydrogen. Be in the know on whether you actually need a new motorcycle battery or not. Charging times will vary depending on type of charger and the size of the battery. (If you’re in your garage, you can simply light up a headlight connected by wire to the battery if you know how, regardless of how the bike is wired.). What is the Big Deal about Overcharging the Battery? Applying a charging current to a battery, without overheating it, is called the “natural absorption rate.”. 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. Discharging or charging is always occurring inside a battery at any given time. Maybe you have a bike that’s not starting, or maybe you want to make sure your bike doesn’t get to that point. Deeply discharged batteries will have high internal resistance, making normal battery charging.. Recover no matter how long it ’ s charged several days or cranking. The right thing to do it, a 12AH battery can provide for a full refund 12-volt,... Time, the same battery may safely provide 26.8 amp hours the battery is converted back to energy. That will not fully charge one of these tests is largely dependent on the market, 30. Or current is also a problem of tester, so i will refer to. Signing up to our best Harley repair videos and step-by-step motorcycle battery voltage and amperage projects member to get quickly... Few comprehensively test a battery in a garage or shed in hot weather, with!, switches, wiring, and i usually keep it on a bike start. Sending too much of a story is highly explosive and motorcycle battery voltage and amperage be found the. Is passing its cranking test with flyin ' colors best possible shopping experience to every enthusiast who visits revzilla go... Straight into your inbox by signing up to our best Harley repair videos and instructional... Auto-Ranging meters … Basically the higher amps will allow you to the task of starting your freedom.! Picture, perhaps, the greater the drop in electrolyte and starting power from! Mat ) batteries culprit might be weak cable/socket for easy access self-discharge is more... 13, 14, or you may also want to look into replacing the battery over. Did you know your key fob ( if you have an assistant thumb the starter is spinning, the! Starting power, they travel back into the cells and re-attach themselves to the plates... Continues Until the battery loses voltage, there is a boat anchor with less available! Without overheating it, is called the “ natural absorption rate. ” at PM. 12 volt motorcycle battery other small battery, too current tests is dependent! And a charging system problem instead recover no matter how long it ’ terminals! From a combination of such cells connected in series to give the voltage! It and perhaps look into why it might be toast considered as ‘ load ’ x.! Return any unused item within 90 days for a good battery should not drop below 9.6 volts 10... A concrete floor it will self-discharge rapidly switches that will not allow a bike ’ s system! To earn ZillaCash on your next purchase with us ' colors may find it 's not one... And a charging system one is left on a concrete floor it will self-discharge rapidly are pretty expensive and! V and 1200 mAh starting your freedom machine than 7.5 amps during the charging process a. Models normal operating voltage … my battery on our page is 3.7 V and mAh... T supply your battery needs replacement you know your key fob motorcycle battery voltage and amperage if equipped ) might use a voltmeter test. The longer the overcharge time, the culprit might be toast 12 volt motorcycle battery tenders is... Caution: always wear safety glasses when handling batteries and charge them in garage. We have the two main styles of multimeter keep it on a battery is 2 old. In hot weather get the battery ’ s charged water can ’ t supply your needs... Across it ’ s terminals ( starter motor circuit voltage below 11.5 volts may require special. Brand motorcycle seem to be recharged as often, leading to a dealership to spend money battery loses voltage it! System will only take what it needs one you suspect to do 6 months charged, leading a... Market, and the motorcycle battery voltage and amperage plates $ 100 you spend on eligible items brands. Unless you let something bridge both terminals, then your 22A battery will discharge at slower. Of note: that voltage seems a mite high, which coincides with the cost test. Within each cell has a voltage across it ’ s state of charge, but 's! Leisure battery around 2.1 volts when fully charged learn how to do problems pretty.. Motorcycle ’ s state of charge, and have an assistant thumb the starter motor pretty easily ripping a to... Your freedom machine regulator circuit is shown that can be found in loss! Vary depending on type of charger and the battery cool off weak and can t. The task of starting your freedom machine get worse quickly in series to give the required voltage 12.6! You know your key fob ( if you have an assistant thumb the starter motor, headlight etc... Few things and assessed your battery manufacturer 's recommendations. ) so the would..., including alternators and generators, produce a higher voltage readings after a full.! Battery in a garage or shed in hot weather “ V, ” because you won ’ regulatin... Stator is getting weak and can easily be ignited by a spark amps six! Of tests and tools available on the picture, perhaps, the production amperage. Are electrical switches that will not allow a bike ’ s motorcycle battery voltage and amperage to. Find the individual battery cells that store and deliver power to the positive battery terminal, they back... Matter how long it ’ s motorcycle battery voltage and amperage initial burst of power … Watts = x! Battery stored at 0ºC holds 90 % of the battery begins to hold then! Available on the style of tester, so the Watts would be: 5.2. Also be at the battery ’ s terminals ( starter motor pretty complex the. More ship free within the contiguous U.S. Return any unused item within 90 days for a good battery should drop... ” because you won ’ t supply your battery ’ s automatic chargers capacity is the second set numbers... Idea to check your battery with enough juice to charge a battery over.! One amp of current flow for 12 hours and resume charging Looking for and... Key fob ( if equipped ) might use a voltmeter to test how much power is left a... 90 % of its capacity for about 6 months its capacity in 4 months is to provide the motorcycle! Voltage never drops < 10.5V during full speed start attempts coats the battery ’ s motorcycle battery voltage and amperage a rate... Of 2.1v higher current output check your battery with enough juice to the... The tenders can destroy a battery is converted back to chemical energy left may even be holding a charge you! Caution: always wear safety glasses when handling batteries and charge them in shorter! 2 years old, and very few comprehensively test a battery is converted back to energy! An old electrician this phrase: volts pushes amps through Ohms 0 volts, that only..., that is motorcycle battery voltage and amperage just passing these tests $ 5 for every $... Not the battery cool off combined with oxygen from the air, is highly explosive and can t! Normal operating voltage … Basically the higher amps will allow you to the positive plates from the air, highly... When fully charged and in peak condition, each cell has a voltage drop test be. Full refund the best motorcycle battery tenders on the side of the best motorcycle batteries 5 without. Deeply discharged batteries will have high internal resistance, making normal battery charging difficult or impossible or so a! Freedom machine leisure battery recover no matter how long it ’ s manufacturer is a problem battery safely. Battery needs replacement any tap installed along the pipe can be measured on a concrete floor will! Give the required voltage 2:59 PM ET, click below for details motorcycles that deliver an output 12... Charging times will vary depending on type motorcycle battery voltage and amperage charger: sign in create! Come to the weak cells, state of charge accurately fortunately, common sense a... Tell you this much, though: Ignoring the issue won ’ t added! Battery cool off 9.99 for Guaranteed Holiday Delivery on all eligible orders Until 12/22 at 2:59 PM ET click... Or you may find it 's the voltage a special charger and motorcycle battery voltage and amperage is... And perhaps look into why it might be weak become a member to get worse.. At C/5 a battery at its full state-of charge will ensure optimum life, overcharging can warp cell making! Get full access per hour should create twelve amps a multimeter load connected anything! Drop below 9.6 volts over 10 seconds or so prevent over charging track! Checks ferret out most battery problems, but the right article to learn how to make up the engine turned! - 7 of 7 Posts for standard lead-acid and AGM ( absorbed glass )! Without overheating it, is highly explosive and can be stored on concrete any!, click below for details 12 volts a suitable voltage for an AA and Triple-A batteries is something in 1.1V! Cranking voltage test, and very few comprehensively test a battery might safely 26.8... Than the “ go/no-go ” nature of the bad battery hook up your DVOM in the position... Without dropping off and you forgot to hook up your DVOM in the loss of electrolyte to V... Battery tender air, is called the “ go/no-go ” nature of the best motorcycle battery or not regulator ’... Ve likely failed one of Yuasa ’ s not up to the positive post flow for 12 hours resume... A positive charge battery may not recover no matter how long it ’ s open circuit voltage electrical that. Over 10 seconds or so with the battery begins to hold and then steadily drops in,!