RB300-LT

12V 300Ah
Cold Weather Deep Cycle Lithium Battery
Group 8D

RB300-LT

12V 300Ah
Cold Weather Deep Cycle Lithium Battery
Group 8D

The RB300-LT is a lithium iron phosphate battery that is part of RELiON’s Low-Temperature Series. Chilly nights off-the-grid are now easier with the RB300-LT - perfect for RVs, Sprinters, Class A and Class C vehicles, and more!

$2,599.95

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ENGINEERED IN THE USA

United States Of America White 230216 103954

US-BASED SUPPORT

Warranty White 230216 103954

10 YEAR WARRANTY

Features

Cold Weather Ready

With a robust system that draws power from the charger itself, LT models do not require additional components – such as a heated blanket – to bring the battery to a safe temperature for charging.

Lightweight

RELiON lithium batteries provide more power than lead-acid batteries and are typically half the weight. Boosting both performance and agility on the water.

Fast Charging

RELiON lithium batteries charge much faster than traditional lead-acid batteries, and they’re packed with more usable energy and up to 10 times longer life so you’re always ready to go!

Long Life

RELiON lithium batteries provide up to 10 times longer life than lead-acid batteries, and they still provide 80% of the rated capacity after 3,500 cycles.

Maintenance Free

RELiON lithium batteries are maintenance-free – no watering, no corrosion. Low self-discharge means the batteries don’t lose capacity when they’re idle, assuring that you have the energy you need, every time you need it.

Constant Power

Full power available throughout discharge. Voltage does not drop like lead-acid.

Partial State of Charge Tolerant

Partial state of charge, known as PSOC, which is a killer of lead-acid batteries, does not affect performance or battery life of a lithium battery. Sometimes batteries don’t get fully charged, or they regularly operate in a partial state of charge. Either way, you can count on RELiON lithium batteries living a long and productive life.

More Usable Capacity:

Lead-acid batteries are typically sized up to two times your energy needs to account for extended periods without sun and less usable energy with higher rates of discharge. Plus, you are typically cautioned to limit your use to 50% of the rated capacity, as using more can significantly reduce performance. Lithium batteries provide 100% of their rated capacity, regardless of the rate of discharge. And, you can use it all and still get substantially longer cycle life.

Specifications

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ELECTRICAL SPECIFICATIONS

Nominal Voltage 12.8 V
Nominal Capacity 300 Ah
Capacity @ 25 A 720 min
Energy 3840
Resistance ≤30 mΩ @ 50% SOC
Efficiency 99%
Self Discharge <3% per Month
Maximum Batteries Connected in Series 1 (Single-use)

MECHANICAL SPECIFICATIONS

Dimensions (L x W x H) 20.6 x 10.5 x 8.7” (522 x 267 x 220 mm)
Weight 76.1 lbs (34.54 kg)
Terminal Type M8 x 1.25 x 2mm
Terminal Torque 80 - 100 in-lbs (9 - 11 N-m)
Case Material ABS & Polycarbonate blend (UL94-V0 flame rating)
Enclosure Protection IP67
Cell Type - Chemistry Cylindrical - LiFePO4

DISCHARGE SPECIFICATIONS

Maximum Continuous Discharge Current 100 A
Peak Discharge Current 200 A (7.5 s ±2.5 s)
Discharge Over-Current Protection 280 A ±50 A (9 ±4 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 9.2 V (2.3 ±0.1 vpc)
8.8V 2.2±0.3V/cell
Short Circuit Protection Response Time 200-600 μs

CHARGE SPECIFICATIONS

Recommended Charge Current 15 A - 50 A
Maximum Continuous Charge Current 100 A
Charge Current 14 to 32 ºF (-10 to 0 ºC) ≤0.1 C (10 A)
Charge Current -4 to 14 ºF (-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 ±0.05 vpc) (1.0 ±0.5 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)
Recommended 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)

HEATING ELEMENT SPECIFICATIONS

Heating Temperature Range -4 to 50 ºF (-20 to 5 ºC)
Heating Time 1.5 hr @ 15 A

COMPLIANCE SPECIFICATIONS

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

TYPICAL LITHIUM IRON PHOSPHATE CHARACTERISTICS

Charge Voltage Char Chart 12 V graph
Charge Voltage Soc Chart 12 V graph
Discharge Voltage At Various Rates 12 V graph
Discharge Voltage Chart 12 V graph
Life Vs Lead Acid Chart graph
Cycle Life Vs Depth Discharge Chart graph

Reviews

Frequently Asked Questions

How do LiFePO4 batteries perform in cold temperatures?
As with all batteries, cold temperatures will result in reduced performance. LiFePO4 batteries have significantly more capacity and voltage retention in the cold when compared to lead-acid batteries. Important tips to keep in mind: When charging lithium iron phosphate batteries below 0°C (32°F), the charge current must be reduced to 0.1C, and below -10°C (14°F) it must be reduced to 0.05C. Failure to reduce the current below-freezing temperatures can cause irreversible damage to your battery. RELiON’s LT Series is specifically designed for cold charging, utilizing charge current to heat the battery before allowing charge. With the LT series, you can start the charge below 0°C (32°F).
How does the RB300-LT (Low Temp) battery work?
The RB300-LT features the same size and performance as RELiON's RB300, but can safely charge at temperatures that drop below 0°C (32°F) using a standard charger. The system features proprietary technology which draws power from the charger itself, requiring no additional components. The entire process of heating and charging is completely seamless for the user. Simply plug the battery into the regular lithium charger and the internal heating and monitoring system takes care of the rest. Because it takes time to heat the cells, the charging process will take a little longer in below-freezing temperatures.
How can I determine the state of charge (SOC) of my lithium iron phosphate battery?
The best way to determine the SOC of your battery is to use a battery indicator— a high-precision instrument that captures instantaneous and integrated data in real-time. RELiON’s battery indicator uses a 500A shunt to accurately measure the discharge/recharge currents and calculates the Ampere-hours (Ah) flowing in and out of the battery.
Can I connect my LT batteries in series/parallel?
LT batteries may be connected in parallel only. Series connections are NOT allowed.

The RB300-LT Is Great For Powering

Recreational 230216 114025

RV

Anchor V2 230216 114031

Marine

Solar 230216 114023

Renewable Energy

RELiON's Low Temperature Series

Learn more about RELiON's LT Series and how to use our batteries in colder temperatures.

How to Read RELiON's Data Sheets

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