C.T.I. CTI680ESS LiFePO4 battery pack in a 4U rack form. 51.2V / 6.8kWh nominal, 5kW max output, integrated BMS with cell balancing, ≥5000 cycles, IP21.
The C.T.I. CTI680ESS is a 4U rack-mount lithium iron phosphate (LiFePO4) battery pack rated 51.2V with 67Ah×2 cells, giving roughly 6.8kWh of nominal energy and 5kW maximum output. An integrated BMS provides over-charge, over-discharge, over-current, high/low temperature and short-circuit protection, with cell balancing.
Key specifications
Nominal voltage 51.2V ・ Nominal capacity 67Ah×2 ・ Max output 5kW ・ Life cycles ≥5000 (25±3°C) ・ Recommended charge 56V / 41.6A ・ End-of-discharge voltage 44V ・ Max continuous current 50A charge / 100A discharge ・ BMS cut-off 58.4V charge (3.65V/cell), 44.0V discharge (2.75V/cell)
Operating & environment
Charge 0–50°C ・ Discharge −20–55°C ・ Storage −5–35°C ・ IP21 ・ SPCC enclosure ・ Vertical mount ・ CAN2.0 / RS232 / RS485 ・ 627×436×172mm ・ 52kg net ・ Altitude ≤4000m ・ 5-year warranty
Certification
CE-EMC (EN 61000-6-3, EN 61000-6-1) ・ IEC62619 ・ UN38.3 / MSDS
Packs can be paralleled to build larger systems — suitable for telecom rooms, UPS backup and small to medium energy storage installations.
