Major Signs Your Motorcycle Battery Needs To Be Replaced

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Jamie Mills
Major Signs Your Motorcycle Battery Needs To Be Replaced

A motorcycle battery cannot last for a lifetime. Even the best quality battery has a maximum life expectancy because they are essentially boxes of chemicals, which lose potency over time. That being said, when a battery goes bad, there is no way to revive it. The only way is to solve this is with a new motorcycle battery to keep your vehicle running again.  


While some may choose to ignore bad batteries, it's better to avoid damaging your alternator due to further worn-out battery. Moreover, battery issues can cause delays in your schedules and may even leave you stranded in unknown places. This is why you must know when the right time to replace it with a new one is. If you aren't sure when to replace your motorcycle battery, below are some signs you should consider and convince you to buy a new one. To help you, listed below are several major signs that may indicate you need to get your battery replaced.


Receding Horn Volume and Dimming Headlights


Almost every component of your motorcycle is influenced by the motorcycle battery. If you notice your horn sounding less loud or your headlights seeming dimmer or not covering as much range as before, then those are all indicators of a failing battery that needs replacement.


Built-Up Sulfation


One of the most common causes of battery failure is the sulfur molecules of the lead acid becoming greatly discharged and sticking to the lead plates of the battery. The build-up of sulphur discharge can make cheap motorcycle batteries eventually fail and die.




It is a known fact that a regularly-used motorcycle battery is also less likely to go bad. This is why a lot of batteries fail during long winters when the motorcycle is not being ridden. After long periods of sitting idle in the garage, your motorcycle will have difficulty starting up, or it may not start up at all. You may need to buy motorcycle battery replacements for your motorcycle if you notice such indicators.


Starting Problems


On modern bikes, some conditions disallow the motorcycle to start if, for example, you haven’t pulled the clutch in or the side stand isn’t up. Make sure that your motorcycle key is in the ignition position properly. These small details can mimic more significant problems with your bike, like a dead battery.


If your engine is turning over at the appropriate speed when you twist the key, then you probably don’t have a battery problem. But it’s likely to be a battery problem if you have a cranking issue.


Inconsistent Multimeter Readings


You need to use a voltmeter or multimeter after uncovering the terminal. Adjust to DC voltage that includes 12-volt. Most meters have a 20-volt setting, which works handily.


By touching the positive or red lead to the red terminal on the battery, and doing the same with the black, negative lead, you can deduce the voltage. Any voltage less than 11 should be charged, with the ideal level between 13 and 13.6. It would be best for you to buy motorcycle battery replacements if you constantly get erratic readings.


Headlights and Horn


Observing your motorcycle’s headlight after turning it on is one of the quickest methods for checking the condition of your battery. If the beam is dim and flickering, you probably have a battery-related issue. Additionally, if you tap your horn and it doesn't seem to have as much volume as it used to, or if it doesn't make any noise, this is another indicator that your battery needs to be replaced.


Uncertain millimetre readings


A millimetre measures different electrical parameters, such as current, voltage, or resistance, and motorcycle owners should own one. You can carry out regular check-ups on cheap motorcycle batteries using the millimetre. If you get readings below 12volts, something is probably wrong with your battery, as 12volts signifies a perfectly functional battery.


Failing horn and lights


Any type of vehicle be it a car or a motorcycle needs a properly working horn and light. They help to quickly detect what is in front and alert other people, both drivers, and passers-by, of your presence. Having a failing horn and light is dangerous and is an indication of a failing battery. If you notice your bike light is not as bright as before and the horn produces faint sounds, you should inspect your battery at once.




The possibility of a battery failing will continually increase the older it gets. To this effect, the average lifespan of a standard motorcycles battery is four years. After this, your battery can start exhibiting signs of failure, such as fast discharge or incomplete recharge, among others. Sometimes, these can begin to occur even before the four-year deadline. While a good battery can last longer, this can still reach the end of the operation. Therefore, you should consider its age, then decide whether it’s still reliable or need some replacement already.


The abovementioned paragraphs are just some of the many signs that may indicate your motorcycle battery needs to be replaced. Once you notice some of these signs, don't get bewildered and prepare on searching for an excellent new one right away, preferably better than your old battery and lasts longer than usual. Of course, this also entails proper maintenance and good restoration. So make sure to keep your eyes on your battery condition so you can avoid getting stranded in unfamiliar places simply due to a dead battery.

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