The powerful RELiON RB300-HP Lithium Iron Phosphate Battery is ready for use in RVs and in many marine applications including sailboats and catamarans. It's the perfect compromise between the unique demands of starting service and deep cycling, low amp draw service. Temperature TolerantLithium batteries can handle a wide variety of conditions and are even 2.5x more efficient at low temperatures than lead-acid while being able to safely operate up to 149°F. LightweightRELiON lithium batteries provide more power than lead-acid batteries and are typically half the weight â boosting both performance and agility on the water. Eco-Friendly and SafeRELiON lithium batteries are the ultimate clean energy. No gassing, no fumes, and no pollution. Enjoy reliable power, while protecting the environment, using these non-hazardous batteries. Maintenance FreeRELiON lithium batteries are maintenance-free â 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 PowerFull power available throughout discharge. Voltage does not drop like with lead-acid batteries. Electrical SpecificationsNominal Voltage: 12.8 VNominal Capacity: 300 AhCapacity @ 25A: 720 minEnergy: 3840 WhResistance: =30 mO @ 50% SOCEfficiency: 99%Self Discharge: | RELiON RB300-HP Deep Cycle Lithium Iron Phosphate Battery, Group 8D