DISCOVER ELEMENT - Environmental Specifications; Protections Specifications

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3.3 Environmental Specifications
Table 3-3, ELEMENT ESS Environmental Specifications
Environmental Specifications 48-48-5120 48-48-5120-H
Charge Operating Temperature Range
(a)(b)
0°C to 45°C (32°F to 113°F)
Discharge Operating Temperature Range
(a)
-20°C to 55°C (-4°F to 131°F)
Internal Heater Operating Temperature Range
(c)
Not applicable -20°C to 5°C (-4°F to 41°F)
Storage Temperature (1 month)
(d)
-30°C to 55°C (-22°F to 131°F)
Storage Temperature (6 months)
(d)
-10°C to 30°C (14°F to 86°F)
(a)
Specifies the temperature of the cells and not the ambient temperature. Ambient temperature and cell
temperature may not be the same.
(b)
Although the Battery Management System (BMS) does not allow charging when cells are below 0°C (32°F), the
48-48-5120-H has a heater that warms the battery to a temperature that enables charging to resume at 2°C (37°F).
(c)
When the 48-48-5120-H battery cells are between -20°C (-4°F) and 5°C (41°F) and connected to a charging source,
energy is diverted from the charging source to the internal heater until the battery reaches 8°C (46.4°F).
(d)
Storage outside of specified temperatures will result in permanent capacity loss and void the warranty.
3.4 Protections Specifications
Table 3-4, ELEMENT ESS Protections Specifications
Protection Specifications 48-48-5120 / 48-48-5120-H
Overvoltage
Protection
(a)
Above 58.4 V for 3 seconds
Recovery
(a)
Recovery after 120 seconds and less than 55.2 V
Undervoltage
Protection
(b)
Less than 40 V for 5 seconds
Recovery
(b)
No automatic recovery. The battery module shuts down after
120 seconds.
Over-Charge Current
Protection Greater than 110 A for 10 seconds
Recovery Recovery after 120 seconds
Over-Discharge Current
Protection
(c)
3-second rating 220 A
Recovery
(c)
Recovery after 120 seconds
Over-temperature in Discharge
Protection
(d)
Cell temperature above 55°C (131°F) for 5 seconds
Recovery
(d)
Cell temperature below 50°C (122°F)
Under-temperature in Discharge
Protection
(d)
Cell temperature below -20°C (-4°F) for 5 seconds
Recovery
(d)
Cell temperature above -18°C (0°F)
Over-temperature in Charge
Protection
(d)
Cell temperature above 45°C (113°F) for 5 seconds
Recovery
(d)
Cell temperature below 40°C (104°F)