Universal use for all Power X-Change cordless tools
Saving money, protecting the environment and flexibility
Extended runtime + more power with two 18 V batteries
ABS process-controlled active battery management system
Max. safety, optimal performance, operating time + service life
Wireless freedom: no tangled cables, flexible working
High-quality lithium-ion cells resistant to memory effect
Self-discharge resistant - high constant power
3-stage LED system for checking battery charge
Rubber coating for high impact protection and good grip
Tray handle for easy removal
The housing is resistant to dust, corrosion and mechanical influences
Also suitable for TWIN-PACK use for demanding 36 V tools

Voltage 18 V
Battery capacity 4 Ah
max. power 900 W
Battery quantity 2 pieces

Same summary

The Einhell Power-X-Change Twinpack 18V 4.0 Ah battery pack is designed primarily for users who already use Einhell Power-X-Change tools and need a reliable backup or additional power source. It is best suited for periods of more intensive work around the house, in the garden or in the workshop, where two batteries in rotation allow for fewer interruptions and greater efficiency. The 4.0 Ah capacity is suitable for typical domestic and universal use, but for very long or extremely demanding tasks, even more powerful batteries may be more suitable. The key advantage of this pack is its flexibility with all tools and the ability to easily extend the working time without worrying about compatibility if you use the same platform.

Recommendation source: general guidelines for product selection.

User view

This type of battery pack is most often used by DIY enthusiasts, gardeners and anyone who wants to have a spare or upgrade their tool collection for everyday and occasional tasks. The two-battery pack is useful for anyone who wants to do several tasks in a row without waiting for a charge, for example when renovating, assembling furniture or doing cosmetic work in the garden. It is also important for users to stay within the reliable Einhell brand , as this keeps the entire system compatible and more transparent.

Why buy at Enaa

On Enaa you will find proven products from popular brands, supported by clearly presented technical data and expert descriptions that help you choose the right solution for your needs. The online platform also allows for easy comparison with other batteries in the same category for an even better decision.

Answers to frequently asked questions

Is the battery pack compatible with all Einhell Power-X-Change devices?

Yes, both batteries are designed specifically for the Power-X-Change platform and work with all 18V tools in this series.

What use is the 4.0 Ah capacity best suited for?

The 4.0 Ah combination is a balanced choice for everyday tasks around the house or in the garden, such as screwdriving, drilling, mowing or short watering - without any significant additional weight. For continuous work with more demanding devices, we recommend having an even more powerful battery in reserve.

Can I charge both batteries at the same time?

Charging both batteries is possible if you use a charger that supports simultaneous charging of two batteries. Otherwise, you must charge them alternately.

Is the battery weight also suitable for small hand tools?

These batteries are suitable for most classic hand tools, but for long-term overhead use, it is important to keep in mind that higher capacity also means slightly higher weight.

How do I check if the batteries are right for my tool?

The easiest way is to check the Power-X-Change marking and the required voltage of the tool (18 V); if these data match, the batteries are suitable for use.

Description updated: April 2026