The Einhell 18 V 2. 0 Ah lithium-ion rechargeable battery is a member of the multifunctional & interchangeable battery system from the power X-Change series from Einhell. The rechargeable battery System can be used universally for all the products from the power X-Change series. The advantages to the customer are obvious: a single rechargeable battery & a single charger for all tools not only saves significant costs of buying, it also eliminates the untidiness & chaos of having different rechargeable batteries & chargers for each separate tool. The 18V 2. 0 Ah power-x-change provides maximum safety thanks to Einhell proactive battery management system. The batteries have a much longer service life, because the charging cycles are adjusted to the specific situation. The high-quality lithium-ion cells are resistant to the self-discharging normally associated with batteries. At the same time The batteries can be recharged at any time without incurring any damage. A three-step LED battery charge status indicator shows the actual charge status at a glance. State-of-the-art components provide permanent monitoring of the parameters during charging. A rubber-coated housing provides excellent impact protection & a firm hold as well. Integrated recessed handles enable the battery to be taken out effortlessly & Ergonomically.