Types Of Car Batteries

(Last Updated On: February 14, 2021)

If we’re talking about their purpose, car batteries can be divided broadly into two groups: starting batteries and deep cycle batteries. Each type comes with its distinctive advantages that you should know about before making any decision.

Their architecture and technology are another way to categorize car batteries. There are three types of design: lead-acid batteries are the most widely used in automobiles today, while later and more sophisticated developments are lithium-ion batteries and NiMh batteries.

Batteries Starting (SLI) vs. Deep Cycle Batteries

Our handpicked list of the best car battery includes things that can serve as both starting batteries and batteries for deep cycles. Understanding how they vary will help you determine whether you are prepared to pay for such flexibility.

Starting batteries are also referred to as cranking batteries or SLI batteries, meaning “starting, lighting, and ignition.” In brief bursts, SLI batteries supply a significant amount of energy to crank your engine as well as power your lights and other electrical accessories. As a result, only a small portion of the starting battery, usually a shallow discharge depth of only about 2% to 5% of the battery’s capacity, is discharged rapidly.

A deep cycle battery, in comparison, is a battery designed to handle several thousands of deep discharge and recharge cycles over its lifetime. Although it is theoretically possible to cycle the battery down to 20% without immediately “killing” the storm, professionals and full-time campers are advised to maintain the average daily discharge at about 45 percent to 50 percent to optimize the battery’s lifetime.

The speed of discharge is another crucial difference between starting batteries. Deep cycle batteries are often designed to discharge slowly, thereby supplying steady power for several hours at a time instead of providing a short time for an instant high voltage surge. For camping applications, this role makes deep cycle batteries suitable. Furthermore, in a deep cycle battery, the average charging efficiency is 85-95 percent. The very best can even exceed 98 percent, far greater than that of ordinary starting batteries.

The Battery Of Lead-Acid

The most popular type is lead-acid batteries, which rely on a lead-acid chemical reaction to get things going. Showers of lead-acid fall into the group of “SLI.” The alternator supplies the power for the car until the battery jolts the engine to life. Most vehicles come from the factory with a generic SLI battery.

Also, this group is split into the flooded, Gel, and Absorbed Glass Mat. Jump to the following “Types of Lead-Acid Batteries” segment to learn more about each type’s particular characteristics and pros and cons. Under the same principle, all three forms work: one lead plate and one lead oxide plate are immersed in a sulfuric acid electrolyte solution that causes a reaction between the two plates. A cell is called a mixture of those two plates, where the chemical energy is contained in the battery. There are six cells in a typical lead-acid battery. Around 2-volts of life can be provided by each cell. You have six cells in most car batteries, and then you have a 12-volt battery.

The sulfuric acid would cause a reaction on the lead dioxide plate, causing the vessel to emit two things: ions and lead sulfate. The ions formed by the lead dioxide plate react to the adjacent plate to produce hydrogen and lead sulfate. A chemical reaction that creates electrons is the result. The electrons race and produce electricity around the plates. To start your engine and power the electrical devices such as radio, interior lights, and headlights, the electricity flows out of the battery terminals.

What is fascinating is that this chemical reaction is completely reversible, which is why you can jumpstart and continue to charge your battery for the remainder of its life. Lead and lead dioxide can form on the plates by adding current to the battery at just the correct voltage, and you can reuse your battery before it retires from old age and needs replacement.

The battery produces oxygen and hydrogen gas during the charging of a lead-acid battery, which can be explosive. This is why, under the hood, showers are usually mounted, where they dissipate and do not condense. A firewall must be mounted when mounting a battery in the trunk to secure the passengers. The battery box must also be vented to the vehicle’s exterior.

Lithium-ion batteries and NiMh batteries are newcomers to the automotive battery realm. For mobile phones and other portable devices, these batteries are widely used in rechargeable applications. These two are very stable compared to the old lead-acid batteries and carry a charge for an extended period, with the ability to quickly release that charge.

Batteries Of Lithium-Ion

There are very similar lithium-ion batteries to the NiMh batteries below. Lithium batteries are the most powerful type of battery and carry the most extended static charge, explaining their whopping price. In high-performance applications, these batteries are becoming more prevalent, mainly where performance requires the batteries to be as light as possible.

Porsche has recently replaced traditional lead-acid batteries, which usually weigh approximately 40 pounds, with lithium ions, which weigh about 13 pounds. Such an upgrade came with a $1700 replacement rate. The only drawback is that lithium-ion batteries are not suitable for use in freezing weather, as they can be harmed in freezing temperatures.

Batteries From NiMh

NiMH batteries quickly charge, but when idle, they have a faster discharge rate. In electric cars, these are the kind of batteries used. The negative electrode is the hydrogen-absorbing alloy used by NiMH batteries, and the positive side is nickel oxyhydroxide.



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