EINHELL Battery PXC 18V 4.0Ah SEALED 18V 4AhUs universally usable with all Power X-Change battery systemsWith the latest generation of lithium cells, it offers 100% more power, a 13% more compact design, and 10% less weight. SEALED: Protected from dust and water jets (IP57 rating), Built-in short-circuit protection detects contact with water and shuts down electronicsCharge status displayed via 3-level LED display