These are good for deep cycle and deliver best life performance if recharged before 50% discharge rate.
AGM allows the electrolytes between the plates to be in close proximity increasing the discharge and recharge efficiency. They also offer greater life span and greater cycle life than a wet cell battery. They are generally the safest lead acid batteries you can buy. They store very well and do not tend to degrade as easily. These are specialty batteries that usually cost more than twice as a premium wet cell. The new technology is called AGM and it stands for Absorbed Glass Mat. The OEM BMW Battery is a heavy wet cell (flooded) based battery on older lead acid battery technology. The OEM BMW Battery (Exide) has a CCA of 640. If you live in an area with warm climates, consider looking at CA. What’s the point of weight savings if your car can’t start on a cold morning track day? Another variable to consider is CA which is the amount of current a battery can provide at 32F or 0C. This is the most important rating when choosing a battery because you want your car to start when you need it to. This is the measurement of amps a battery can deliver at 0F for 30 seconds without dropping below 7.2 volts. You want something as light as possible, however as the lighter the battery gets, the lower the CCA gets. The OEM BMW Battery (Exide) weighs 45.5 pounds! As we explained earlier, a lighter battery means a lighter car which means potentially a faster car.
Your contribution helps us purchase new tools and maintain our website to continue creating articles such as this. While taking a look at this guide, you’ll want to pay attention to the following variables: weight, technology, price and CCA.ĭisclosure: Some of the links in this article are affiliate links, meaning, at no additional cost to you, we will earn a commission if you click through and make a purchase. This Ultimate Lightweight Battery Guide is meant to assist your research to find what the best battery is for you. When shopping for a new lightweight battery, you’re going to have a lot of research to do. Not only do lighter batteries save weight, but it can last longer as well. Weight reduction is a constant quest for those who track their cars and battery weight savings can be huge.
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