STIHL battery technology and cordless power tools

Cordless power tools are quiet and are usually lighter than comparable models with a petrol engine. They have no cord and do not generate any exhaust, plus they are low-maintenance and easy to use.

In this article, we will show you what sets the quality of STIHL batteries and STIHL cordless power tools apart, what contributes to a power rating and why more voltage does not automatically mean more performance.

STIHL batteries pack a particularly powerful punch.

STIHL batteries: a range of power players

Today, lithium-ion batteries are used in most cordless power tools. STIHL uses only this modern technology. That’s because the batteries offer a host of advantages over other types: they have a high energy and power density along with a low weight, no memory effect, a long service life and low self-discharge. Because cordless power tools make it possible to work without a cord, they also provide maximum flexibility and freedom of movement.

STIHL batteries feature electronic monitoring to prevent deep discharge and overheating or overloading cells. They feature tough, compact housing for optimum protection against mechanical stress. The battery housing comes with a built-in electronic charge level indicator that can be activated simply by pressing a button and displays information such as charge level by using four LEDs.

STIHL batteries are available in a variety of model ranges with a selection of energy content options.

Volt, watt or ampere: which metric reveals the most about a battery’s performance?

Because the market has yet to establish a standard for determining the performance of a battery, manufacturers are free to choose the metric they want to state. Many decide to list voltage as the measure of their batteries’ performance. But the most meaningful metric is watt (W), which is calculated as voltage (V) multiplied by current in amperes (A): W = V x A

As a result, the combination of voltage and current, rather than a single metric alone, plays a decisive role in the power of a cordless power tool. STIHL has therefore decided on a system with a rated voltage of 36 V. This voltage and the ability to convert it into a high current guarantees tremendous power for cordless power tools.

STIHL uses compact 36 V batteries.

The optimum voltage: 36 V or 80 V batteries?

Lithium-ion batteries consist of individual cells arranged in rows. Each of these cells has a rated voltage of 3.6 V. STIHL 36 V batteries always feature ten cells in a row (10 x 3.6 = 36 V). Therefore the voltage is the product of the number of round cells in a row.

In addition to powerful performance, STIHL places particular value on the size and weight of its batteries. STIHL uses the 36 V system here as well. A voltage of 36 V makes it possible to generate high electric currents (A) while keeping the size and number of components low. To do so, cells are arranged in parallel circuits, such as in a STIHL PRO cordless power system AP 300. This battery features three rows of ten round cells each (10 x 3.6 V + 10 x 3.6 V + 10 x 3.6 V). The use of fewer electronic components makes the cordless power tools compact, light and tough. The higher current (A) further increases the batteries’ power.

But STIHL 36 V batteries are not only compact. They also have the same size throughout each cordless power system (COMPACT or PRO), making it possible for users like you to utilise batteries with different energy content in your cordless power tool depending on the situation and the tool. Users of the COMPACT cordless power system, for example, can choose from three batteries with different energy content and the same housing size for their tools. The consistent sizes make sure the battery always fits in the tool’s housing.

Ensuring constant peak performance: up to 60 A of current

The efficiency of the entire system is particularly important in cordless power tools, which only have a limited amount of energy per battery charge. To get the best possible results over a long period of time, the amount of power the battery actually delivers to the tool you are using is crucial.

That is why STIHL focuses on intelligent engine control, which enables the battery and the cordless power tool to exchange data and actively supply power based on the real need (known as the load). To ensure that the cordless power tool always receives all the power the battery has to offer, the current is automatically increased while the voltage of the battery slowly decreases during use.

If a situation does not call for the battery’s full power, on the other hand, the current is automatically reduced. For example, battery-powered hedge trimmers work with a higher current when trimming a large hedge than when trimming a small box tree, making optimum use of the energy in the battery and extending the battery life of the charge.

As battery voltage decreases, STIHL’s electronics work with greater current – as seen here with the power supply of an MSA 200 chainsaw. The result? Constant performance.

From batteries to cutting tools: a powerful, complete package

All the components in STIHL cordless power tools come from a single source. For example, only cutting tools that are specially designed for cordless power tools are used, ensuring that they are neither too large nor too heavy. That goes for guide bars, saw chains, hedge trimmer blades and mowing tools alike.

The way the battery is positioned in the tool also helps to ensure perfect balance in users’ hands. As a result, STIHL cordless power tools feature particularly good handling – an absolute must for handheld tools. After all, the heavier and larger a tool is, the more strenuous it is for users to work with.

When it comes to technology and comfort, STIHL can look back on over 90 years of experience as a manufacturer of chainsaws and power tools for professional forestry and agriculture as well as for gardening and landscape maintenance. The result is a powerful, complete package consisting of batteries, tools and cutting tools that make it easier for you to work in and with nature.

STIHL has the right cordless power tool for everyone

STIHL has the right cordless power tool for every job, no matter whether you are an occasional user or a professional one. The new STIHL cordless products with built-in batteries are perfect for light-duty jobs around the garden. The STIHL COMPACT cordless power system is ideally suited for medium-sized and larger gardens. Be sure to also check out the VIKING MA lawn mower, which is also compatible with the COMPACT cordless power system. The STIHL PRO cordless power system packs an even more powerful punch and offers professionals high-quality tools in a variety of power classes for trimming hedges, mowing lawns, tidying lawn edges, blowing leaves, clearing paths and sawing wood. All batteries can be used for all tools within a product family.

Do you want to find out what STIHL cordless power tool best fits your needs?

Then ask one of our more than 40,000 STIHL specialist dealers worldwide.

STIHL has the right cordless power tool for every job and every user.

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