RB40

12V 40Ah
Deep Cycle Lithium Battery

RB40

12V 40Ah
Deep Cycle Lithium Battery

The RB40 lithium iron phosphate battery is powerful, yet compact enough to fit into many deep cycle applications. Ideal for fishing electronics, robotics, solar lighting, remote power and outdoor adventures, the RB40 offers more power, less weight and up to 10x longer life than its lead-acid counterparts.

$479.95

FIND A DEALER

Seach our global network of RELiON dealers for sales or service

DEALER LOCATOR
Us Flag Small

ENGINEERED IN THE USA

United States Of America White 230216 103954

US-BASED SUPPORT

Warranty White 230216 103954

10 YEAR WARRANTY

Features

Partial State of Charge Tolerant

Partial charging does not affect performance quality or battery life. A low self-discharge rate means worry-free storage so even occasional users can be assured of reliable performance.

Maintenance Free

RELiON lithium batteries are maintenance-free – 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.

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 rated capacity after 2,000 cycles. Spend more time powering your applications and less time replacing your batteries.

Eco-Friendly

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.

Highly Efficient

RELiON lithium batteries have super low resistance, allowing you to charge much faster. And lithium batteries are 99% efficient, minimizing the losses during charge. Compare that to traditional lead-acid batteries at 75-80% efficiency, which results in significant loss when recharging.

Specifications

DOWNLOAD PDF

Chemical Specifications

Nominal Voltage 12.8 V
Nominal Capacity 40 Ah
Capacity @ 25 A 96 min
Energy 512 Wh
Resistance ≤50 mΩ @ 50% SOC
Efficiency 99%
Self Discharge <3% per Month
Maximum Batteries Connected in Series 4

Mechanical Specifications

Dimensions (L x W x H) 7.8 x 6.5 x 6.8” (197 x 166 x 173 mm)
Weight 11.9 lbs (5.4 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 40 A
Peak Discharge Current 80 A (7.5 s ±2.5 s)
Discharge Over-Current Protection 170 A ±20 A (20 ±5 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 10.0 V (2.5 ±0.1 vpc)
Short Circuit Protection Response Time 200-600 µs

Charge Specifications

Recommended Charge Current 2 A - 20 A
Maximum Continuous Charge Current 40 A
Charge Current 32ºF to 14ºF (0 to -10 ºC) ≤0.1 C (4 A)
Charge Current -4ºF to 14ºF (-20 to -10 ºC) ≤0.05 C (2 A)
Recommended Charge Voltage 14.2 V - 14.6 V
BMS Charge Voltage Cut-Off 15.2 V (3.8 ±0.025 vpc)
(1.1 ±0.4 s)
Reconnect Voltage 14.4 V (3.6 ±0.050 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# MH62098)
IEC62133 (cells)
Shipping Classification UN 3480, CLASS 9

Performance Characteristics

Charge Voltage Char Chart 12 V graph
Charge Voltage Soc Chart 12 V graph
Discharge Voltage At Various Rates 12 V graph
Discharge Voltage Chart 12 V graph
Life Vs Lead Acid Chart graph
Cycle Life Vs Depth Discharge Chart graph

Reviews

There are no reviews for this product yet.

The RB40 Is Great For Powering

Commercial 230216 114024

Floor Machines

Anchor V2 230216 114031

Marine

Solar 230216 114023

Renewable Energy

Understanding Battery Terms

Understanding the basics of battery ratings and terminology is important when comparing and selecting the right type and number of batteries for your application to ensure you have enough energy to meet your energy goals.

Learn More About Battery Terms

How To Successfully Charge RELiON Batteries

There are many factors to keep in mind when discussing charging - how to charge, what charger is necessary, and more.

Learn More About Charging LiFePO4 Batteries

We're Invested In Our Lithium Iron Phosphate Batteries

Lithium Certifications Recycling 1000X300