Ryobi 18V ONE+™ RB1840X 4.0Ah Lithium+ Compact Battery. The ready to go indicator shows when the battery has reached 80% capacity. 1 x 6.35mm Straight Cutter. No load speed (rpm) 20,000 - 30,000. Note - this is LATEST UK MODEL - watch out for broken/repaired/refurbished versions with a model number beginning with PCL which have been imported (after original sale) from the US and pacific region.
eBay