RB75
12V 75Ah
Deep Cycle Lithium Battery
Group 24
RB75
12V 75Ah
Deep Cycle Lithium Battery
Group 24
The RB75, a lithium iron phosphate battery, is often used in larger applications, such as marine, recreational vehicle, and electric vehicles. Maintaining consistent power and an M8 terminal system, it allows installation flexibility, fast charging capabilities and is maintenance free.
$699.95
ENGINEERED IN THE USA
US-BASED SUPPORT
10 YEAR WARRANTY
Features
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.
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.
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.
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!
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.
Temperature Tolerant
Lithium 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 (65°C).
Eco-Friendly & Safe
RELiON 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.
Specifications
Electrical Specifications |
|
|---|---|
| Nominal Voltage | 12.8 V |
| Nominal Capacity | 75 Ah |
| Capacity @ 25 A | 180 min |
| Energy | 960 Wh |
| Resistance | ≤30 mΩ @ 50% SOC |
| Efficiency | 99% |
| Self Discharge | <3% per Month |
| Maximum Batteries Connected in Series | 4 |
Mechanical Specifications |
|
|---|---|
| Dimensions (L x W x H) | 10.2 x 6.6 x 8.2” (260 x 168 x 210 mm) |
| Weight | 23.6 lbs (10.7 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 | 75 A |
| Peak Discharge Current | 150 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) |
| Short Circuit Protection Response Time | 200-600 µs |
Charge Specifications |
|
|---|---|
| Recommended Charge Current | 3.7 A - 37.5 A |
| Maximum Continuous Charge Current | 75 A |
| Charge Current 32º to 14ºF (0 to -10 ºC) | ≤0.1 C (7.5 A) |
| Charge Current -4º to 14ºF (-20 to -10 ºC) | ≤0.05 C (3.75 A) |
| 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) |
| 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) |
| *Refer to charge currents below 0°C (32°F) | |
Compliance Specifications |
|
|---|---|
| Certifications | UKCA & CE (battery) |
| UN38.3 (battery) | |
| UL1642 (cells) (File# MH64523) | |
| IEC62133 (cells) | |
| Shipping Classification | UN 3480, CLASS 9 |
Performance Characteristics
Reviews
Cliff H.
Jun 27th, 2022
Great product and incredible customer service. I will be using Relion products on my boat for life.
Ed P.
Mar 31st, 2021
It’s amazing how long you can run the energy hog sonar units. I run the electronic for two days straight and still have 50% of batteries left. This gives me a peace of mind not have to turn off the units to save energy to get through the day.
Documentation
Other Documentation
The RB75 Is Great For Powering
RV
Renewable Energy
Marine
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Great product and incredible customer service. I will be using Relion products on my boat for life.
It’s amazing how long you can run the energy hog sonar units. I run the electronic for two days straight and still have 50% of batteries left. This gives me a peace of mind not have to turn off the units to save energy to get through the day.