48V 12Ah LiFePO4 UPS Battery
(4kVA Backup Module)
Chalong Fly manufactures this 48V nominal, 12Ah (576Wh) LiFePO4 battery pack for external, high-rate UPS backup in 4kVA-class systems. Match the pack to the UPS DC window, charging profile, load current and communication interface, and confirm the approved enclosure drawing against the installation space.
External Battery (Short Backup)
The CLF Standard Voltage Series UPS Battery Pack is customized specifically for high-rate UPS equipment, perfectly suited for 1U external UPS series available on the market.
- Parallel configuration: designs are specified for connection of up to 8 packs. Confirm the proposed bank with the UPS, charger, BMS and protection settings for the selected system.
- High-rate discharge: the specification lists up to 7C and 84A maximum continuous discharge. Confirm these limits for the quoted configuration and actual load.
- Integrated BMS protection covers overcharge, over-discharge, over-temperature, over-current and short-circuit conditions. Confirm protection thresholds and interface details for the selected configuration.
- Mechanical fit: current product information gives two enclosure dimension sets—415 × 438 × 88.5 mm and 418 × 438 × 43 mm. Confirm the approved drawing for the quoted configuration before rack planning.
Designed for reliable UPS backup applications, this battery is widely used in data centers, enterprise IT rooms, banking facilities, medical equipment, security systems, precision instruments, and commercial office environments.
Mechanical Dimensions (L×W×H): 415 × 438 × 88.5 mm
| Electrical Specifications | |
|---|---|
| Rated Voltage | 48V |
| Rated Capacity | 12Ah |
| Power | 576Wh |
| Internal Resistance | ≤ 150 mΩ |
| Self-discharge | < 1% per month |
| Parallel expansion listed | Up to 8 packs; validate the system design |
| Adaptable for UPS | ≤ 4KVA |
| Discharge Specifications | |
|---|---|
| Backup Time | 8–15 minutes (reference; depends on load and system conditions) |
| Max Continuous Discharge Current | 84A |
| Over-discharge Protection Voltage | 39V |
| Overdischarge Recovery Voltage | 40.5V |
| Short Circuit Protection | Yes |
| Communication & Compliance | |
|---|---|
| Communication Methods | RS232/RS485 |
| Certification | UN 38.3/UL1973 |
| Mechanical Specifications | |
|---|---|
| Cell Specification | IFR26650-3000mAh |
| Battery Series | 15S4P |
| Dimensions (L×W×H) | 418 × 438 × 43 mm |
| Weight | 12 Kg |
| Output Terminal | Anderson SB50 |
| Shell Material | SPCC |
| IP Rating | IP21 |
| Charging Specifications | |
|---|---|
| Charging Current | 9A |
| Charging Voltage | 54V |
| Overcharge Protection Voltage | 54V |
| Overcharge Recovery Voltage | 51.75V |
| Balancing Activation Voltage | 51.75V |
| Temperature Specifications | |
|---|---|
| Discharge Temperature | -20 to 60°C |
| Charge Temperature | 0 to 45°C |
| Storage Temperature | -5 to 45°C |
| BMS Over-Temperature Protection | 65 ± 5°C |
| BMS Over-Temp Protection Recovery | 55 ± 5°C |
UPS battery selection & project planning
48V 12Ah LiFePO4 UPS battery for 4kVA-class projects
The 48V, 12Ah (576Wh), 15S4P configuration is specified for high-rate, short-duration UPS backup in 4kVA-class systems, with an 8–15 minute runtime reference. Confirm the approved enclosure variant before comparing rack fit.
UPS compatibility and replacement checks
How to interpret this configuration
For a 4kVA-class UPS, compare battery-side demand with the specified 84A maximum continuous discharge current. Match the charger profile and protection cutoffs to the system, and assess any required pulse current. Product information gives enclosure heights of 43 mm and 88.5 mm; confirm the approved configuration before space planning.
Typical system context: The 48V 12Ah page is the higher-current, shorter-reference-runtime option within the 48V pair. It may be evaluated for compatible 4kVA-class enterprise UPS, server/network rooms and security/control systems where the battery bus and current limits match; it is not a substitute for the 48V 28.8Ah page without comparing the actual runtime need.
Interface and installation details to confirm
- Communication listed: RS232/RS485; output terminal: Anderson SB50; cell configuration: 15S4P.
- Confirm the approved enclosure drawing and mounting clearances for the quoted pack before installation.
- Product specifications state a 12 kg weight, IP21 protection and an SPCC enclosure.
LiFePO4 retrofit checklist
- For the selected UPS, verify the DC bus and LiFePO4 charging profile against the specified 39V / 40.5V cutoff and recovery values.
- Check continuous and any transient current against the 84A listed limit and UPS specifications.
- Confirm SB50 polarity, RS232/RS485 protocol/pinout, rack depth and which of the two listed enclosure heights applies.
- Check pack count and parallel topology against the UPS and BMS before designing an external bank.
Runtime planning and OEM/ODM project intake
Plan from the actual UPS load
Treat 8–15 minutes as a planning reference, not a guaranteed 4kVA full-load runtime. Actual runtime varies with kW load, UPS efficiency, battery cutoff, state of charge, temperature, age and system configuration. Provide the measured load and required hold-up time for a configuration-specific estimate.
What to include in a quotation request
Include the 48V UPS model, DC charge window, actual load and required runtime, 84A/peak demand, SB50 polarity, RS232/RS485 needs, installation envelope and required enclosure height.
OEM/ODM coordination can address the BMS/interface, approved connection topology, cable and connector details, housing height, mounting and label requirements. Share the exact UPS model, dimensions and acceptance criteria; the two published height values must be resolved for the quoted variant.
Discuss this UPS configurationCompare related UPS configurations: Compare the 48V 28.8Ah option with a 30-minute runtime reference · Compare the 76.8V 9Ah 2U rack option · View the UPS battery range
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