The Keysight (formerly Agilent's electronic measurement technology) U1170A charging power supply is intended for the charging circuit of the U1252A / B and U1253A / B multimeters. The U1170A is included in the scope of delivery of the U1252A / B and U1253A / B hand multimeters.
There is also the 7.2V battery block as an ER spare part - or replace the battery for service kits with a 9V block battery (then the charger can no longer be used).