Our RB300-HP is a dual-purpose 12V, 300 Ah lithium battery. Our HP Series batteries are high performing dual purpose deep cycle batteries that can handle both starting and cycling. The RB300-HP has increased peak amps over our standard batteries. This increase in peak amps can be used to start motors, electric start generators and other high amp draw devices. After starting, the battery can double as a house battery providing power for peripherals, accessories and other onboard needs.
RELiON’s HP Series batteries are a perfect compromise between the unique demands of starting service and deep cycling, low amp draw service. The RB300-HP is a powerhouse for use in many marine applications including sailboats and catamarans.
The RB300-HP features installation flexibility and no maintenance over the life of the battery. It maintains consistent power and is equipped with an M8 terminal type and a built-in battery management system (BMS).
Electrical Specifications |
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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 | 1 (Single Use) |
Mechanical Specifications |
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Dimensions (L x W x H) | 20.6 x 10.5 x 8.7” (522 x 267 x 220 mm) |
Weight | 82.7 lbs (37.5 kg) |
Terminal Type | M8 x 1.25 |
Terminal Torque | 80 - 100 in-lbs (9 - 11 N-m) |
Case Material | ABS |
Enclosure Protection | IP66 |
Cell Type - Chemistry | Cylindrical - LiFePO4 |
Discharge Specifications |
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Maximum Continuous Discharge Current | 100 A |
Peak Discharge Current | 800 A (2 s) |
BMS Discharge Current Cut-Off | 1000 A ±100 A (2.2 ±1 ms) |
Recommended Low Voltage Disconnect | 11 V |
BMS Discharge Voltage Cut-Off | 9.2 V (2.3 ±0.08 vpc) (4.2 ±0.5 s) |
Reconnect Voltage | 10 V (2.5 ±0.1 vpc) |
Short Circuit Protection | 200-600 µs |
Charge Specifications |
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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 | 15.4 V (3.85 ±0.025 vpc) |
(1 ±0.2 s) | |
Reconnect Voltage | 14.6 V (3.65 ±0.05 vpc) |
Balancing Voltage | 14.4 V (3.6 ±0.025 vpc) |
Temperature Specifications |
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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 |
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Certifications | UN38.3 & CE (battery) |
UL1642 (File# MH62098) (cells) | |
IEC62133 (cells) | |
Shipping Classification | UN 3480, CLASS 9 |
Long days of adventuring call for long hours of power. Lithium sailboat batteries offer a solution to this need as they provide tremendous capabilities for those moments when you’re away from it all.
HP Series batteries offer the capability to deliver a burst of high current for a short period of time. These current requirements are typically necessary to start a boat, generator motor, or an AC compressor.
RELiON batteries have been used to power many unique applications. Learn how RELiON LiFePO4 batteries allowed entrepreneurs Kathy and DJ to improve their mobile vet and grooming operations.
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I had a terrible experience with 3x 225ah 8D batteries. The 50% to 80% SOC zone is not much power storage. I've added 2x 300HPs and while I only installed them 5 days ago so far so good. The power storage and more consistent voltage at just about any SOC has enabled installing an inverter and being able to use it, making stays on the hook a much easier experience.