The Metabo LiPOWER 18V 4.0Ah lithium-ion battery for cordless tools, CAS system is a purpose-developed battery for powering various Metabo brand tools and devices that support CAS (Cordless Alliance System). It is intended for users who want greater freedom in working without cable restrictions and reliable power for garden, workshop or professional use.

Using this battery allows the tool to operate for a longer period of time without intermediate charging, which is especially practical for more intensive tasks such as drilling, screwdriving or field work. Due to its compatibility with the CAS system, it brings an additional advantage - it can also be used with several different devices from different manufacturers that are part of this system.

Evaluation of key product features

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The combination of 18V voltage and 4.0 Ah capacity allows the power tool to achieve stable and long-lasting operation, even under high loads. This saves users time by requiring less frequent battery replacement or charging, which is especially practical on projects where constant access to a power source is limited.

Lithium-ion battery chemistry ensures lower self-discharge and lower overall weight compared to older battery types. This means the tool is easier to handle and the user can work longer without fatigue. In addition, lithium-ion technology does not require a full discharge before charging, making it easier to use every day.

The battery is recognized by its inclusion in the CAS ecosystem, which connects multiple brands to a single battery standard. This allows users to seamlessly switch between different devices and tools without the need for multiple different batteries. This increases convenience, reduces clutter, and represents a more sustainable solution for the home or professional workshop.

Another important feature is the built-in protection against overload, overcharging and deep discharge, which extends the life of both the battery and the connected tool. In practice, this means safer and more carefree work, even during long-term use on more demanding projects.

It is important to know

The Metabo LiPOWER 18V 4.0Ah lithium-ion battery is a good choice for those who need a reliable power source for Metabo tools within the CAS system. It is suitable for both DIYers and regular users who are looking for a compromise between autonomy and weight. Before buying, it is crucial to check the suitability of the battery with a specific tool and consider whether the capacity matches your working habits.

• Check that the battery is indeed compatible with your Metabo or CAS tool; an incorrect system means that you will not be able to use the battery.
• The 4.0 Ah capacity provides longer runtime, but this may mean a slightly heavier battery compared to less powerful models.
• For intensive or long-term work, consider combining two identical batteries for continuous use, as one will be on during work and the other on the charger.
• Occasional users and those performing overhead or more detailed tasks should note that higher capacity means higher weight.
• Don't forget to check the battery's protection functions, especially if you use it in more demanding conditions where overheating or deep discharge are not uncommon.

Source of editorial recommendations: general guidelines for product selection.

In practice

🔧 Home use and hobby

🟢 High enough capacity for most repairs, drilling or screwing around the house without constant interruptions for charging.

🛠️ Regular housework

🟡 A balanced choice for regular work — not overly heavy, but offers noticeably longer usage time than basic batteries of lower capacity.

⚡ Working in the field or with more intensive equipment

🟡 You can help yourself by charging less frequently, but for very intensive or long-hour work, it may make sense to have an additional battery of the same type.

🏡 Overhead work or assembly

🟠 For very light or long-term manual work (e.g. ceiling installation), the weight may be noticeable — in such cases, consider a model with a lower capacity.

Answers to frequently asked questions

Is the battery also suitable for all CAS tools from other brands?

The battery is designed for the CAS system, but always check the compatibility list of each manufacturer as there are exceptions.

Is a charger included for this battery?

The battery is usually sold separately, without a charger — check your existing charger or select a suitable model separately.

What impact does a 4.0 Ah capacity have on the weight of the tool?

Higher capacity means a slightly heavier battery, which is most noticeable during prolonged use or overhead work.

Can this battery be used as a spare for working with two tools?

Yes, with two batteries you can work continuously with one tool while charging the other — ideal for larger projects.

What to do if the tool does not work with the battery?

Check the voltage, connector, and whether your model supports this exact battery; some older devices are not supported.

Description updated: July 2026

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