Synergy Digital Power Tool Battery, Compatible with Einhell PXBP-300 Power Tool, (Li-ion, 18V, 4000mAh) Ultra High Capacity, Replacement for Einhell 4511396 Battery - Walmart.com
For Einhell Power X change Battery 6.0AH 18V Li-ion LED 4511396 PXC Power Tool | eBay