Bosch BAT 690 battery charger

The Bosch BAT 690 charges lead-acid, maintenance-free, gel, fleece, AGM, EFB and lithium iron phosphate (LFP) batteries, with automatic charging characteristics for each battery type. It delivers 90 A constant output on 12 V car electrical systems and 45 A on 24 V truck systems. A gentle charging phase lets it charge deeply discharged batteries automatically.

Supply mode keeps the power needed to retain stored data while you change the battery, for example in car radios, power units and control units. In buffer mode the charger supports the on-board network, for example while control units are updated, keeping the battery charged and the vehicle's electrical system stable. The dot-matrix display reads in 22 languages, the charger's software is updated over a USB port, and the wall bracket holds the charger during longer charging.

Technical data

• Max charging current: 12 V: 90 A, 24 V: 45 A
• Charging characteristic: I1U1I2aI3aI3
• Supply mode: 12 V / 24 V, max 30 A
• Buffer mode: 13 V / 26 V, max 90 A / 45 A
• Battery nominal voltage: 12 V / 24 V
• Charging cable length: 3 m
• Charging cable cross-section: 16 mm²
• Power consumption: max 1600 W
• Mains voltage: 230 V, 50/60 Hz
• Operating temperature: -5 °C to +45 °C
• Protection class (DIN 40050): IP 20 D
• Safety class (DIN 40530): SK I
• EMC class (DIN 40839): class B
• Weight without charging and power cables: 6.6 kg
• Dimensions (W x H x D): 220 x 115.5 x 473 mm

Kit contents

• BAT 690 battery charger
• Removable charging cables
• Power cable
• Wall bracket
• Manual
• User instructions