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.
Maintenance Free
Plug, play, and charge. No watering, no corrosion.
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.
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.
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.
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!
Constant Power
Full power available throughout discharge. Voltage does not drop like lead-acid.
Electrical Specifications |
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Nominal Voltage | 51.2V |
Nominal Capacity | 25 Ah |
Energy | 1280 Wh |
Resistence | ≤70 mΩ @ 50% SOC |
Efficiency | 99% |
Self Discharge | <3% per Month |
Maximum Batteries Connected in Series | 1 (Single Use) |
Mechanical Specifications |
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Dimensions (L x W x H) | 10.2 x 6.7 x 8.4” (260 x 172 x 213.1 mm) |
Weight | 27.6 lbs (12.5 kg) |
Terminal Type | M8 x 1.25 |
Terminal Torque | 80 - 100 in-lbs (9 - 11 N-m) |
Case Material | ABS & Polycarbonate blend (UL94-V0 flame rating) |
Enclosure Protection (Waterproof Rating) | IP67 |
Cell Type - Chemistry | Cylindrical - LiFePO4 |
Discharge Specifications |
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Maximum Continuous Discharge Current | 20 A |
Peak Discharge Current | 25 A (4 ±1 s) |
Discharge Over-Current Protection | 60 A ±10 A (6 ±3 ms) |
Recommended Low Voltage Disconnect | 44.0 V |
Discharge Under-Voltage Protection | 40.0 V (2.5 ±0.1 vpc) (100 ±50 ms) |
Reconnect Voltage | 32.0 V (2.0 ±0.1 vpc) |
Short Circuit Protection | 400-600 μs |
Charge Specifications |
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Recommended Charge Current | 1.25 A - 12.5 A |
Maximum Charge Current | 20 A |
Recommended Charge Voltage | 56.0 V - 58.4 V |
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) |
BMS Charge Voltage Cut-Off | 60.8 V (3.8 ±0.05 vpc) |
(1.0 ±0.5 s) | |
Reconnect Voltage | 57.6 V (3.6 ±0.05 vpc) |
Balancing Voltage | 57.6 V (3.6 ±0.025 vpc) |
Temperature Specifications |
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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 | 149 ºF (65 ºC) |
Reconnect Temperature | 122 ºF (50 ºC) |
*Refer to charge currents below 0°C (32°F) |
Compliance Specifications |
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Certifications | UN38.3, UKCA & CE (battery) |
UL1642 (cells) (File# MH62098) | |
IEC62133 (cells) | |
Shipping Classification | UN 3480, CLASS 9 |
TYPICAL LITHIUM IRON PHOSPHATE CHARACTERISTICS
Other Documentation
In this video one of our experts breaks down how to easily read our Data Sheets. Watch the video to learn more.
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.
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