Red Box Power Unit RbL4000-28Twin

The Red Box RBL4000-28TWIN is a portable twin lithium ground-start power unit for 28 V DC aircraft starting support. The twin configuration provides 3,000 starting amps and a maximum short-circuit current of 8,000 amps, with a stated capacity of 56 Ah at the 10-hour rate.

Built as two compact aluminium power packs, the unit is intended for demanding ground operations where portable starting power is required. Each pack features digital IP65 voltage indication, 40 A circuit-breaker protection and a 2 m heavy-duty aircraft cable with NATO connector.

• 28 V DC nominal output; 30 V DC maximum voltage
• 3,000 starting amps
• 8,000 maximum short-circuit amps
• 56 Ah capacity at the 10-hour rate
• Lithium battery technology
• Two aluminium-cased packs, each approximately 35 × 10 × 38 cm
• Operating temperature range: -30 °C to +60 °C
• Two 4 A electronic universal-AC-input chargers specified

Manufacturer part numbers: RBL4000-28TWIN; TWRBL4000.

Refer to the Red Box Aviation ground power brochure for manufacturer documentation and operating information.