Description

The RB20 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 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.

RB20 Specifications…

ELECTRICAL
Nominal Voltage : 12.8 V
Nominal Capacity : 20 Ah
Capacity @ 25A : 48 min
Energy : 256 Wh
Resistance : ≤60 mΩ @ 50% SOC
Efficiency : 99%
Self Discharge : <3% per Month
Maximum Modules in Series : 3

MECHANICAL
Dimensions (L x W x H) : 181 x 76 x 169 mm (7.1 x 3.0 x 6.7”)
Weight : 2.55 kg (5.6 lbs)
Terminal Type : M6
Case Material : ABS
Enclosure Protection : IP56
Cell Type : Cylindrical
Chemistry : LiFePO4

DISCHARGE
Maximum Continuous Discharge Current : 20 A
Peak Discharge Current : 40 A (7.5 s ±2.5 s)
BMS Discharge Current Cut-Off : 70 A ±10 A (20 ±5 ms)
Recommended Low Voltage Disconnect : 11 V
BMS Discharge Voltage Cut-Off : 8 V (2.0 ±0.08 vpc) (140 ±60 ms)
Reconnect Voltage : 10 V (2.5 ±0.1 vpc)
Short Circuit Protection : 200-500 µs

CHARGE
Recommended Charge Current : 1A – 10A
Maximum Charge Current : 20A
Charge Current 32º to 14ºF (0 to -10 ºC) : ≤0.1 C
Charge Current -4º to 14ºF (-20 to -10 ºC) : ≤0.05 C
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 ±0.05 vpc)

TEMPERATURE
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)
*Refer to charge currents below 0°C (32°F)

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

Download The Complete Datasheet PDF