The psb 18 li 2 is an 18v combi drill by bosch diy it is equipped with an 18 v lithium ion battery and the intelligent bosch syneon chip the lithium ion technology means that the drill is always ready to use as the battery does not experience any memory effect or self discharge the syneon chip enables the tool to provide more runtime per battery chargebosch has also furnished this cordless 2 speed combi drill with a high performance 2 speed planetary gearbox ndash perfect for powerful scr