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MLI Ultra 12/1250, 24/1250
– User and Installation Manual
9. SPECIFICATIONS
Technical specifications
MLI Ultra 12/1250
MLI Ultra 24/1250
Part number
66011250
66021250
Electrical
Nominal capacity (Cn)
100 Ah
50 Ah
Nominal energy
1250 Wh
1250 Wh
Nominal voltage
12 V
24 V
Self-discharge
Less than 3% per month
Charging/discharging
Charge method
3-step+ (aka IUoUo)
Bulk/absorption (max charge) voltage
14.25 V
28.5 V
Float voltage (end of charge)
13.5 V
27.0 V
Recommended charge current
50A (0.5C)
25A (0.5C)
Max continuous charge current
100A (1C)
50A (1C)
Max. continuous discharge current
200A (2C)**
100A (2C)
Max. discharge current (peak 10s)
500A (5C)
250A (5C)
Discharge cut-off voltage
(> 0ºC [32°F], <1C)
10V
20V
Mechanical
BCI Group Size
Group 31 ((footprint fits in group 49)
Length (L)
330 mm [13"]
Width (W)
173 mm [6.8"]
Height (H)
210 mm [8.3"] excl. terminals and stud fuse,
228 mm [9"] incl. terminals
Weight
15 kg [33 lbs.]
Protection degree
IP65
Chemistry
LiFePO4
Case material
Plastic
Temperature
Operating temperature
–20 to 50ºC [–4 to 122ºF] *
Nominal operating temp.
25ºC / 77ºF
Storage temperature
–20 to 55ºC [ –13 to 131ºF]
Relative humidity
10
– 95% relative humidity, none condensing
General
Approvals
CE, E-mark (pending), FCC (pending), UN38.3
UL1642 (cells pack)
Cycle life
3000 cycles at 80% Depth of Discharge
Protection degree
IP65
Parallel configuration
Yes
Series configuration
Yes, up to 48V
Balancing mechanism
Passive
Integrated BMS
Yes
Integrated fuse
No
Integrated disconnect (safety) switch
Yes
MasterBus connectivity
Yes
Powering capabilities for MasterBus
Yes