PRICE: $3,663.95

Time to Gobble Up Some Savings! This week only take advantage of deals on new products + 10% off your purchase. Plus! We're planting 10 trees for every battery sold through One Tree Planted.

*10% Off Excludes bundles and already discounted products.

Time to Gobble Up Some Savings! This week only take advantage of deals on new products + 10% off your purchase. Plus! We're planting 10 trees for every battery sold through One Tree Planted.

*10% Off Excludes bundles and already discounted products.

Use Promo Code: BlueFriday

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FREE GROUND SHIPPING (CURRENTLY ON BACK ORDER. Estimated shipping date December 15)

* Within the continental U.S. only

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).

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
  • Marine

PRODUCT REVIEWS

Peter R.

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.

Why Lithium for Your Sailboat?

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.

The HP Series Explained

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.

DATA SHEET

DOWNLOAD PDF

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 1 (Single Use)

Mechanical Specifications

Dimensions (L x W x H) 20.5 x 10.5 x 9.0” 520 x 267 x 228 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

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

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

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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