The Einhell 18 V 4.0 Ah Power X-Change PLUS Twin-pack is part of the multifunctional and infinitely combinable Power X-Change battery system from Einhell. The universal X-Change batteries provide power and endurance for all the cordless tools across the entire product family covering the garden and workshop sector. The advantages for customers are clear: with one battery and one charger for all devices, you not only save considerable costs on the purchase, its universal nature protects the environment and also offers flexibility in the home and garden. There will be no mess and chaos with a wide variety of batteries and chargers for each individual device. The latest generation of lithium-ion cells provides 100 % more power for maximum performance in all applications, along with a more compact design and reduced weight. Furthermore, out PLUS technology delivers extra power for intensive work. Furthermore, the high-quality battery does not suffer from memory effects or self-discharge, and thus delivers consistent, high power. The 18-volt 4.0 Ah Power X-Change PLUS is a high-end battery in the Power X-Change family, and is also suitable for TWIN PACK use in 36 V applications. The process-driven ABS active battery management system continuously monitors the battery parameters via the integrated microprocessor. This ensures maximum safety, optimal device performance, maximum runtime and maximum service life. You can check the current charge status via the 3-stage LED indicator. The design of the housing makes it resistant to dust, corrosion and mechanical influences. The rubber coating gives the battery high impact protection and a good grip. Thanks to the recessed grip, it can be easily removed from all units. Includes two 4.0 Ah Power X-Change PLUS batteries. The charger is sold separately.