RB300

12V 300Ah Lithium Deep Cycle Battery

Our RB300 is a 12V, 300Ah lithium deep cycle battery. This Group 8D lithium iron phosphate (LiFePO4) battery is ready to replace your heavy lead-acid battery bank in your sailboat, RV or solar energy system. It’s only 82 lbs for a true 300 Amp Hour lithium battery that provides 100% of its rated capacity. The RB300 gives you the flexibility to replace several small, heavier lead-acid batteries in a single high capacity unit.

LiFePO4 batteries are lighter, take less space and last longer. While the up-front cost is higher than Gel, AGM or Lead-Acid the overall cost of ownership is lower over time because they require no maintenance and they have up to 10x longer life.

The RB300 offers high, reliable performance in any climate or condition for RVs, campers, sailboats and battery-based solar systems.

All RELiON Batteries use the safest and most stable components, including a LiFePO4 cathode and a built-in Battery Management System (BMS). The BMS ensures a long lifetime, safe handling – and high-accuracy State of Charge (SOC) calculations.

PRODUCT SPECIFICATIONS

• Voltage: 12.8V
• Amp Hours: 300Ah

DIMENSIONS & WEIGHT

• Length: 20.6 in (522 mm)
• Width: 10.5 in (267 mm)
• Height: 8.7 in (220 mm)
• Weight: 75.8 lbs (34.36 kg)

APPLICATIONS

• Electric Vehicles
• Marine
• Recreational Vehicles
• Solar

 

DATA SHEET

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ELECTRICAL SPECIFICATIONS
Nominal Voltage	12.8 V
Nominal Capacity	300 Ah
Capacity @ 25A	720 min
Energy	3840 Wh
Resistance	≤30 mΩ @ 50% SOC
Efficiency	99%
Self Discharge	<3% per Month
Maximum Modules in Series	6

MECHANICAL SPECIFICATIONS
Dimensions (L x W x H)	20.6 x 10.5 x 8.7” (522 x 267 x 220 mm)
Weight	75.8 lbs (34.36 kg)
Terminal Type	M8 x 1.25
Terminal Torque	80 - 100 in-lbs (9 - 11 N-m)
Case Material	ABS
Enclosure Protection	IP66
Cell Type - Chemistry	Cylindrical - LiFePO4

DISCHARGE SPECIFICATIONS
Maximum Continuous Discharge Current	100 A
Peak Discharge Current	200 A (7.5 s ±2.5 s)
BMS Discharge Current Cut-Off	280 A ±50 A (9 ±4 ms)
Recommended Low Voltage Disconnect	11 V
BMS Discharge Voltage Cut-Off	8 V (2.0 ±0.08 vpc) (140 ±60 ms)
Reconnect Voltage	9.2 V (2.3 ±0.1 vpc)
Short Circuit Protection	200-600 µs

CHARGE SPECIFICATIONS
Recommended Charge Current	15 A - 50 A
Maximum Charge Current	100 A
Charge Current 32ºF to 14ºF (0 to -10 ºC)	≤0.1 C
Charge Current -4ºF to 14ºF (-20 to -10 ºC)	≤0.05 C
Recommended Charge Voltage	14.2 V - 14.6 V
BMS Charge Voltage Cut-Off	15.6 V (3.9 ±0.025 vpc)
	(1.1 ±0.4 s)
Reconnect Voltage	15.2 V (3.8 ±0.05 vpc)
Balancing Voltage	14.4 V (3.6 ±0.025 vpc)

TEMPERATURE SPECIFICATIONS
Discharge Temperature	-4 to 140 ºF (-20 to 60 ºC)
Charge Temperature*	-4 to 113 ºF (-20 to 45 ºC)
Storage Temperature	23 to 95 ºF (-5 to 35 ºC)
BMS High Temperature Cut-Off	176 ºF (80 ºC)
Reconnect Temperature	122 ºF (50 ºC)
*Refer to charge currents below 0°C (32°F)

COMPLIANCE SPECIFICATIONS
Certifications	UN38.3 & CE (battery)
	UL1642 (cells) (File# MH64523)
	IEC62133 (cells)
Shipping Classification	UN 3480, CLASS 9

PERFORMANCE CHARACTERISTICS