There are plenty of myths and misconceptions surrounding motorcycle batteries. Some have been around for decades, while others come from outdated battery technology. Understanding what is fact and what is fiction can help you get better performance and a longer service life from your motorcycle battery.
Myth 1: A motorcycle battery doesn't need charging if you're riding regularly
Not always true. Short trips, frequent starting and accessories such as heated grips, lights and USB chargers can use more energy than the motorcycle's charging system replaces. If your motorcycle is mainly used for short rides, periodically checking the battery and using a suitable battery maintainer can help prevent it from becoming undercharged.
Myth 2: You need to ride your motorcycle to recharge a flat battery
False. A motorcycle's charging system is designed to maintain a healthy battery, not necessarily recover a deeply discharged one. A suitable battery charger should be used to properly recharge a flat or heavily discharged battery.
Myth 3: AGM batteries don't need a charger
False. AGM batteries are maintenance-free, but they still need to be kept properly charged. In fact, allowing an AGM battery to remain deeply discharged for extended periods can permanently reduce its capacity and service life. Always use a charger compatible with AGM batteries.
Myth 4: A bigger battery is always better
False. Installing a battery with a higher capacity or CCA rating isn't automatically an upgrade. The replacement battery needs to be the correct physical size, terminal configuration and electrical specification for the motorcycle.
Myth 5: Motorcycle batteries only fail in winter
False. Batteries can fail at any time of year. Heat can accelerate battery ageing, while cold temperatures make it harder for a battery to deliver starting power. A battery that is already weak may become noticeable when temperatures drop.
Myth 6: If the battery starts the bike, it's healthy
Not necessarily. A battery can have enough power to start an engine but still have significantly reduced capacity. Regular voltage testing, and where appropriate, load testing, can provide a better indication of battery condition.
Myth 7: You don't need to worry about a battery when storing your motorcycle
False. Leaving a motorcycle unused for weeks or months can allow the battery to gradually discharge, particularly because modern motorcycles can continue to draw a small amount of power while switched off. Using a suitable smart battery maintainer during storage can help keep the battery in good condition.
The Bottom Line
Looking after your motorcycle battery doesn't have to be complicated. Keeping it properly charged, using the correct charger, checking its condition and choosing the right replacement battery can all help maximise battery life and reduce the chance of being left stranded with a motorcycle that won't start.
