RB5 12V Deep Cycle Lithium Battery

12V 5Ah LiFePO4 Battery

This 12V 5ah lithium battery is our smallest and lightest deep cycle battery. The RB5 is a lithium iron phosphate (LiFePO4) battery. It has twice the power, half the weight and lasts much longer than its lead-acid counterparts. It’s ideal for industrial applications where you need a long lifespan and quick charge capability or in outdoor/recreational use where lighter weight and capacity are key. It’s commonly used in the following applications: fish finder and flashers, robotics, scooters, solar lighting, remote power, security alarm systems, camping, hiking and other deep cycle applications.

RELiON lithium batteries provide more energy for high consumption than traditional lead-acid batteries. They also offer ultra-fast charging and discharging, high efficiency and a longer cycle life – plus no maintenance!

Not all lithium batteries are created equal. 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: 5Ah

DIMENSIONS & WEIGHT

• Length: 5.9 in (151 mm)
• Width: 2.6 in (65 mm)
• Height: 3.9 in (99 mm)
• Weight: 2 lbs (0.9 kg)

APPLICATIONS

• Backup Power
• Marine
• Recreational Vehicles
• Solar

 

DATA SHEET

ELECTRICAL SPECIFICATIONS
Nominal Voltage	12.8 V
Nominal Capacity	5 Ah
Energy	64 Wh
Resistance	≤130 mΩ @ 50% SOC
Efficiency	99%
Self Discharge	<3% per Month
Maximum Batteries Connected in Series	1

MECHANICAL SPECIFICATIONS
Dimensions (L x W x H)	5.9 x 2.6 x 3.9” (151 x 65 x 99 mm)
Weight	2.0 lbs (0.9 kg)
Terminal Type	F2
Case Material	ABS
Enclosure Protection (Waterproof Rating)	IP66
Cell Type	Cylindrical
Chemistry	LiFePO4

DISCHARGE SPECIFICATIONS
Maximum Continuous Discharge Current	5 A
Peak Discharge Current	10 A (7.5 s ±2.5 s)
BMS Discharge Current Cut-Off	15 A ±3 A (10 ±5 ms)
Recommended Low Voltage Disconnect	11.0 V
BMS Discharge Voltage Cut-Off	8.0 V (2.0 ±0.08 vpc) (100 ±50 ms)
Reconnect Voltage	10.0 V (2.5 ±0.1 vpc)
Short Circuit Protection	200-500 µs

CHARGE SPECIFICATIONS
Recommended Charge Current	0.25 A - 2.5 A
Maximum Continuous Charge Current	5 A
Charge Current 32º to 14ºF (0 to -10 ºC)	≤0.1 C (10 A)
Charge Current -4º to 14ºF (-20 to -10 ºC)	≤0.05 C (5 A)
Recommended Charge Voltage	14.2 V - 14.6 V
BMS Charge Voltage Cut-Off	15.6 V (3.9 ±0.025 vpc) (1.0 ±0.5 s)
Reconnect Voltage	15.2 V (3.8 ±0.05 vpc)

TEMPERATURE SPECIFICATIONS
Discharge Temperature	-4 to 140 ºF (-20 to 60 ºC)
Charge Temperature*	-4 to 113 ºF (-20 to 45 ºC)
Recommended Storage Temperature	23 to 95 ºF (-5 to 35 ºC)
*Refer to charge currents below 0°C (32°F)

COMPLIANCE SPECIFICATIONS
Certifications	UN38.3 (battery)
	CE & UKCA (battery)
	UL1642 (cells) (File# MH62098)
	IEC62133 (cells)
Shipping Classification	UN 3480, CLASS 9

PERFORMANCE CHARACTERISTICS