Our half-rack space (9.5") professional chargers with the same technology as our reliable Fischer Amps 19-inch rackmount chargers. For 4 pcs of 9V rechargeable batteries. With the rack-adapter supplied with each charger, a single charger or two chargers can be mounted into a 19" rack. This allows the user to be flexible in every application. 9.5-inch steel housing 1U (44mm) All 9.5-inch chargers can be mounted in a 19-inch rack, individually or two chargers next to each other. Separate supervision per charging module. No memory effect when using NiMH rechargeable batteries.