- Replacement and expansion battery set consisting of 4 9 Ah internal battery modules
- Can be installed in APC Easy UPS 3S model and E3SXR6 external battery case
- Battery life: 5-7 years
- Net weight: 4x 27 kg

Extension of bridging time:
- for 10 kW: + 17 minutes
- for 15 kW: + 10 minutes
- for 20 kW: + 8 minutes
- for 30 kW: + 5 minutes
- for 40 kW: + 4 minutes

Storage warning:
To avoid complete discharge, UPS batteries can only be stored for a limited time