RELiON Deep Cycle Lithium Batteries

RB20 12V 20Ah LiFePO4 Battery

This 12V 20Ah lithium battery is powerful yet compact enough to fit in many deep cycle applications. The RB20 is a lithium iron phosphate (LiFePO4) battery with more power, less weight and lasts much longer than its lead-acid counterparts. It’s longer life span provides exceptional lifetime value. The 20 ah of capacity provides ample power for high amp draw electronics for times when you need a longer run time. It’s suitable in many 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: fishing electronics, robotics, solar lighting, remote power, outdoor adventures 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: 20Ah

DIMENSIONS & WEIGHT

• Length: 7.1 in (181 mm)
• Width: 3 in (76 mm)
• Height: 6.7 in (169 mm)
• Weight: 5.6 lbs (2.55 kg)

APPLICATIONS

• Marine
• Solar
• Camping

 

DATA SHEET

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ELECTRICAL SPECIFICATIONS
Nominal Voltage	12.8 V
Nominal Capacity	20 Ah
Energy	256 Wh
Resistance	≤60 mΩ @ 50% SOC
Efficiency	99%
Self Discharge	<3% per Month
Maximum Batteries Connected in Series	3

MECHANICAL SPECIFICATIONS
Dimensions (L x W x H)	7.1 x 3.0 x 6.7” (181 x 76 x 169 mm)
Weight	5.6 lbs (2.55 kg)
Terminal Type	M6 x 1.0
Terminal Torque	35 - 44 in-lbs (4 - 5 N-m)
Case Material	ABS
Enclosure Protection	IP66
Cell Type - Chemistry	Cylindrical - LiFePO4

DISCHARGE SPECIFICATIONS
Maximum Continuous Discharge Current	20 A
Peak Discharge Current	40 A (7.5 s ±2.5 s)
Discharge Over-Current Protection	70 A ±10 A (20 ±5 ms)
Recommended Low Voltage Disconnect	11.0 V
Discharge Under-Voltage Protection	8.0 V (2.0 ±0.08 vpc) (140 ±60 ms)
Reconnect Voltage	10.0 V (2.5 ±0.10 vpc)
Short Circuit Protection Response Time	200-500 µs

CHARGE SPECIFICATIONS
Recommended Charge Current	1 A - 10 A
Maximum Continuous Charge Current	20 A
Charge Current 32ºF to 14ºF (0 to -10 ºC)	≤0.1 C (10 A)
Charge Current -4ºF 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	15.2 V (3.8 ±0.025 vpc)
	(1.1 ±0.4 s)
Reconnect Voltage	14.4 V (3.6 ±0.025 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)
Recommended Storage Temperature	23 to 95 ºF (-5 to 35 ºC)
BMS High Temperature Cut-Off	158 ºF (70 ºC)
Reconnect Temperature	122 ºF (50 ºC)
*Refer to charge currents below 0°C (32°F)

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

Typical Lithium Iron Phosphate Characteristics