Detailed Specifications

ELECTRICAL SPECIFICATIONS CHARGE SPECIFICATIONS
Nominal Voltage 12.8 V Recommended Charge Current 2.5 A - 25 A
Nominal Capacity 50 Ah Maximum Charge Current 50 A
Capacity @ 25A 120 min
Charge Current 14 to 32 ºF
(-10 to 0 ºC)
≤0.1 C
Resistance ≤50 mΩ @ 50% SOC
Charge Current -4 to 14 ºF
(-20 to -10 ºC)
≤0.05 C
Recommended Charge Voltage 14.2 V - 14.6 V
Eiciency 99%
Self Discharge <3% per Month BMS Charge Voltage Cut-O
15.4 V (3.85 ±0.025 vpc)
(1.1 ±0.4 s)
Maximum Modules in Series 1 Reconnect Voltage 14.6V (3.65 ±0.05 vpc)
Balancing Voltage 14.4 V (3.6 ±0.025 vpc)
DISCHARGE SPECIFICATIONS
Maximum Continuous Discharge Current 50 A
HEATING ELEMENT SPECIFICATIONS:
Peak Discharge Current 100 A (7.5 s ±2.5 s) Heating Temperature Range -4 to 41 ºF (-20 to 10 ºC)
BMS Discharge Current Cut-O 150 A ±20 A (10 ±5 ms) Heating Time Approximately 1 hr @ 4 A
Recommended Low Voltage Disconnect 11 V
BMS Discharge Voltage Cut-O 9.2 V (2.3 ±0.1 vpc) (140 ±60 ms)
COMPLIANCE SPECIFICATIONS
Reconnect Voltage 10 V (2.5 ±0.1 vpc)
Certifications
UN38.3 (battery)
CE (battery)
UL1642 & IEC62133 (cells)
Short Circuit Protection 200-600 µs
Shipping Classification UN 3480, CLASS 9
TEMPERATURE SPECIFICATIONS
Discharge Temperature -4 to 140 ºF (-20 to 60 ºC)
DIMENSIONAL SPECIFICATIONS
Charge Temperature* -4 to 113 ºF (-20 to 45 ºC)
Storage Temperature 23 to 95 ºF (-5 to 35 ºC)
BMS High Temperature Cut-O 176 ºF (80 ºC)
Reconnect Temperature
122 ºF (50 ºC)
*Refer to charge currents below 32°F (0°C)
MECHANICAL SPECIFICATIONS
Dimensions (L x W x H)
7.8 x 6.5 x 6.8”
197 x 166 x 173 mm
Weight 14.1 lb (6.38 kg)
Terminal Type M8 x 1.25 x 12mm
Terminal Torque 80 - 100 in-lbs (9 - 11 N-m)
Case Material ABS
Enclosure Protection IP66
Cell Type - Chemistry Cylindrical - LiFePO
4
DATA SHEET
ENGINEERED
IN THE USA
RB50-LT
Voltage: 12.8V | Capacity: 50 Ah | Energy: 640 Wh
relionbattery.com
+
1.803.547.7288 • TOLL FREE: [phone] | 1433 Dave Lyle Blvd • Rock Hill, SC 29730
RB50-LT DATA SHEET • 10.28.20