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PRICE: $3,488.95

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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: 20.5 in (520 mm)
  • Width: 10.5 in (267 mm)
  • Height: 9 in (228 mm)
  • Weight: 82.7 lbs (37.5 kg)
APPLICATIONS
  • Electric Vehicles
  • Marine
  • Recreational Vehicles
  • Solar

Find Out Why Sailing Nandji Chose Lithium

Frequently Asked Questions

Can the RB300 be used in my RV?
Yes! The RB300 is a reliable and efficient alternative to lead-acid batteries in your RV, travel trailer or campervan. The weight and size of a lead-acid battery bank are sometimes infeasible in smaller RVs. Plus, lithium batteries have no maintenance, no venting and can be mounted in any position. Your typical lead-acid RV battery only allows you to use around 50% of the rated capacity, whereas Lithium batteries are ideal for extending dry camping wherever your travels take you. With highly sustainable voltage levels, The RB300 offers 99% usable capacity which gives you that extra time in your home away from home.
Can the RB300 be wired in series or parallel?
Yes. The RB300 can be wired in series or parallel. The difference between parallel and series connections: Parallel connections involve connecting 2 or more batteries together to increase the capacity of the battery bank. In this case, the positive terminals are connected together and the negative terminals are connected together of all the batteries until you reach your desired capacity. Series connections involve connecting 2 or more batteries together to increase the voltage of the battery system. The positive of one battery is connected to the negative of another until the desired voltage is achieved. For example, if you connect 2 x 12V batteries in series, the battery system will be 24V.
Is the RB300 a good battery replacement in sailboats?
Yes. The RB300 is a high power, reliable lead-acid alternative in sailboats and catamarans. The RB300 gives you the flexibility to replace several small, heavier lead-acid batteries in a single high capacity unit.

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) 20.5 x 10.5 x 9.0” 520 x 267 x 228 mm
Weight 83 lbs (37.5 kg)
Terminal Type M8
Terminal Torque 80 - 100 in-lbs (9 - 11 N-m)
Case Material ABS
Enclosure Protection IP56
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 CE (battery)
UN38.3 (battery)
UL1642 & IEC62133 (cells)
Shipping Classification UN 3480, CLASS 9

PERFORMANCE CHARACTERISTICS

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