Detailed Specifications
ELECTRICAL SPECIFICATIONS CHARGE SPECIFICATIONS
Nominal Voltage 12.8 V Recommended Charge Current 1.75 A - 17.5 A
Nominal Capacity 35 Ah Maximum Charge Current 70 A
Capacity @ 25A 84 min
Charge Current 14 to 32 ºF
(-10 to 0 ºC)
≤0.1 C
Resistance ≤50 m @ 50% SOC
Charge Current -4 to 14 ºF
(-20 to -10 ºC)
≤0.05 C
Eiciency 99% Recommended Charge Voltage 14.2 V - 14.6 V
Self Discharge <3% per Month
BMS Charge Voltage Cut-O
15.6 V (3.9 ±0.025 vpc)
(1.2 ±0.3 s)
Maximum Modules in Series 1
Reconnect Voltage 15.2 V (3.8 ±0.050 vpc)
DISCHARGE SPECIFICATIONS
Balancing Voltage 14.4 V (3.6 ±0.025 vpc)
Maximum Continous Discharge Current 70 A
Peak Discharge Current 100 A (7.5 s ±2.5 s)
COMPLIANCE SPECIFICATIONS
BMS Discharge Current Cut-O 160 A ±20 A (9 ±4 ms)
Certifications
CE (battery)
UL1642 & IEC62133 (cells)
Recommended Low Voltage Disconnect 11 V
BMS Discharge Voltage Cut-O 8 V (2.0 ±0.08 vpc) (144 ±30 ms) Shipping Classification UN 3480, CLASS 9
Reconnect Voltage 8.64 V ±0.96 V (2.16 ±0.24 vpc)
Short Circuit Protection 200-800 s
DIMENSIONAL SPECIFICATIONS
TEMPERATURE SPECIFICATIONS
Discharge Temperature -4 to 140 ºF (-20 to 60 ºC)
Charge Temperature* -4 to 113 ºF (-20 to 45 ºC)
Storage Temperature 14 to 95 ºF (-10 to 35 ºC)
BMS High Temperature Cut-O 167 ºF (75 ºC)
Reconnect Temperature 12 ºF (50 ºC)
*Refer to charge currents below 32°F (0°C)
MECHANICAL SPECIFICATIONS
Dimensions (L x W x H)
7.7 x 5.2 x 6.7”
195 x 131 x 171 mm
Weight 11.4 lbs (5.17 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
RB35-X
Voltage: 12.8V | Capacity: 35 Ah | Energy: 448 Wh | Group:U1
relionbattery.com
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1.803.547.7288 • TOLL FREE: (855) 931-2466 | 1433 Dave Lyle Blvd • Rock Hill, SC 29730
RB35-X DATA SHEET • 10.17.20