RB20
12V 20Ah
Deep Cycle Lithium Battery
RB20
12V 20Ah
Deep Cycle Lithium Battery
The RB20 lithium iron phosphate battery provides ample power for high amp draw electronics or in outdoor recreational use where lighter weight and capacity are key. It's commonly used in fishing electronics, robotics, solar lighting, remote power and other deep cycle applications.
$189.95
ENGINEERED IN THE USA
US-BASED SUPPORT
10 YEAR WARRANTY
Features
Maintenance Free
Plug, play, and charge. No watering, no corrosion.
Lightweight & Easy to Transport
Compared to other battery chemistries, RELiON LiFePO4 batteries provide the same or greater energy at less than half the weight and size. This means more flexibility and ease of use!
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 so you’re always ready to go!
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.
Constant Power
Full power available throughout discharge. Voltage does not drop like lead-acid.
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 | 20 Ah |
| Energy | 256 Wh |
| Resistance | ≤60 mΩ @ 50% SOC |
| Efficiency | 99% |
| Self Discharge | <3% per Month |
| Maximum Batteries Connected in Series | 3 |
Mechanical Specifications |
|
|---|---|
| Dimensions (L x W x H) | 7.1 x 3.0 x 6.7” (181 x 76 x 169 mm) |
| Weight | 5.6 lbs (2.55 kg) |
| Terminal Type | M6 x 1.0 |
| Terminal Torque | 35 - 44 in-lbs (4 - 5 N-m) |
| Case Material | ABS |
| Enclosure Protection | IP66 |
| Cell Type - Chemistry | Cylindrical - LiFePO4 |
Discharge Specifications |
|
|---|---|
| Maximum Continuous Discharge Current | 20 A |
| Peak Discharge Current | 40 A (7.5 s ±2.5 s) |
| Discharge Over-Current Protection | 70 A ±10 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 ±0.10 vpc) |
| Short Circuit Protection Response Time | 200-500 µs |
Charge Specifications |
|
|---|---|
| Recommended Charge Current | 1 A - 10 A |
| Maximum Continuous Charge Current | 20 A |
| Charge Current 32ºF to 14ºF (0 to -10 ºC) | ≤0.1 C (2 A) |
| Charge Current -4ºF to 14ºF (-20 to -10 ºC) | ≤0.05 C (1 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 ±0.025 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 | 158 ºF (70 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
Brian Evans
Aug 2nd, 2020
I have had this 20 ah battery for about 4months and it's doing a very good job for a small battery it runs a 15 QT 12volt compressor frig for about 12 hrs and I'm very impressed with it so far.
Documentation
Other Documentation
The RB20 Is Great For Powering
Marine
Renewable Energy
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Understanding Battery Terms
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We're Invested In Our Lithium Iron Phosphate Batteries
I have had this 20 ah battery for about 4months and it's doing a very good job for a small battery it runs a 15 QT 12volt compressor frig for about 12 hrs and I'm very impressed with it so far