BMW Motorcycle Battery with Brackets

In the motorcycle world, there's a lot to learn about batteries. For one, there are two basic types: conventional (also called wet) and maintenance-free. However, things only get more complicated from there. Luckily, you've come to the right parts store. We've got the basics, and you can read all about them right here.

Motorcycle Batteries Buying Guide

Conventional or Wet Batteries

This type is relatively inexpensive. Some older models actually require them, too, so be sure to check your owner's and service manuals to figure out whether it's the right kind for your BMW.

A wet battery needs regular maintenance to run its best, though. That requires periodically filling it with distilled water and checking its electrolyte levels. It has to be mounted upright, too, or else it'll be prone to leak and fail, and its acidic fluid is sure to corrode a bike's paint job. Conventional batteries can incur damage from both vibration and heat as well.

Maintenance-Free Batteries

These come in several varieties.

AGM (Absorbed Glass Mat) Batteries

This kind comes in many different sizes, and it's designed both heat- and vibration-resistant. Its case is also completely sealed, valve-regulated, and usually equipped with terminal bolts made of stainless-steel. That means they won't rust and degrade.

Gel Batteries

This kind forgoes the wet medium for gel, and its advantage is that it won't leak, even in the event of a cracked case. It resists heat and vibration much better than average, too.

Most importantly, a gel battery is a great choice for when you're building a custom motorcycle, as it can be mounted at an angle, or even on its side. It can even provide cranking power equivalent to a larger conventional or AGM battery. The one thing to consider if you're thinking about buying one: your bike's charging system may need some minor adjustments.

When to Change One

This is straightforward: if it's three years old or older, or it won't hold a charge. Test yours to determine whether it's in working order and be sure to test your ride's charging system to rule out other causes of it not running right.

Before You Buy One Online

Keep Your Bike Road-Ready -- Install a Genuine BMW Motorcycle Battery Using OEM Hardware

You can order both online, right here. Just browse our catalog by your model and its year; it'll help you find what fits more quickly and easily. Buy now and enjoy fast shipping and delivery directly to your door.