This Bosch Green AL 18V-20 is a super compact charger with excellent manageability. Compatible with all Bosch PBA 18V Lithium-Ion Batteries in the Power 4 All Range. 

"Power4All" is the cordless system with lithium-ion technology for an entire Bosch Green tool family in the house and garden: battery can be flexibly combined with charger and other tools in the Bosch Green 18 volt cordless family.