Replacement battery and expansion battery string 9 Ah For Schneider Electric Galaxy VS 10-60 kW (wide chassis 521 mm and modular battery cabinet) Consisting of 4 internal hot-swappable battery modules Battery type: VRLA (lead acid) Battery service life: 3-5 years . Runtime extension: At 50 kW: + 3 mins At 40 kW: + 4 min At 30 kW: + 6 min At 20 kW: + 8 min At 15 kW: + 10 min At 10 kW: + 15 min . Net weight: 4 x 27 kg . Storage advice: Avoid extended storage of UPS batteries to prevent deep discharge