Additional battery module for extended runtime, Compatible with AEG PROTECT D 2000 LCD+ and AEG PROTECT D 3000 LCD+ UPS systems, A maximum of 6 external battery packs can be connected to the UPS. Additional runtime with 1 battery pack: at 3000 W: + approx. 11 min. at 2000 W: + approx. 18 min. at 1000 W: + approx. 40 min. Height: 2 U Net weight: 42 kg