Four Packs 18V 4.0Ah Lithium ion Replacement Battery for 4511481 for Einhell 18 Volt Power X Change Cordless Power Tools Ozito|Rechargeable Batteries| - AliExpress
Einhell PXC-Twinpack 4 Ah Power X-Change 4511489 Tool battery 18 V 4.0 Ah Li-ion | Conrad.com