
48V 50Ah Lithium Ion Battery, LiFePO4 48V 50Ah Server Rack Batteries for Telecom Battery Backup
Bonnen 48V 50Ah lithium ion battery is a compact energy storage pack designed for stable DC backup power. In simple terms, it is a 48V LiFePO4 battery pack that stores energy and delivers it fast when the main power goes down.
For telecom systems, server racks, and backup cabinets, our battery is often used to keep equipment alive during outages, voltage drops, and grid instability. Compared with old lead-acid batteries, the LiFePO4 48V 50Ah server rack battery usually gives better energy efficiency, longer service life, lighter weight, and lower total cost over time.
Bonnen Battery builds this product for B2B buyers who want a dependable battery pack with stable performance, easy system matching, and export-friendly support. It is suitable for OEM, ODM, and project-based supply.
Free Custom Design
24/7 Engineer Support Services
Certification: Compliance with MSDS, UN38.3, CE, CB, IEC 62619, UL1973, UL9540A
Features of Bonnen 48V 50Ah Lithium Ion Battery
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| Item | General Parameter |
| Battery Type | LiFePO4 |
| Nominal Voltage (V) | 48V |
| Nominal Capacity (Wh) | 2400Wh |
| Cell & Method | 15S1P |
| Dimension (mm) (WHD) | 419 * 482* 133 (3U) |
| Weight (Kg) | 48 |
| Discharge Voltage (V) | 47V |
| Charge Voltage (V) | 55V |
| Charge – Rate. Current / Power | 25A /1.2kW |
| Charge – Max. Current / Power | 50A / 2.4kW |
| Charge – Peak Current / Power | 50A / 2.4kW |
| Discharging – Rate. Current / Power | 50A / 2.4kW |
| Discharging – Max. Current / Power | 80A / 3.2kW, 1s |
| Discharging – Peak Current / Power | 100A / 4.8kW, 1s |
| Communication | RS232, RS485, CAN, WIFI (Optional), Bluetooth (Optional) |
| Depth Of Discharge (%) | 90% |
| Expansion | up to 15 units in parallel |
| Working Temp. (Charge) | 0 ~ 55°C |
| Working Temp. (Discharge) | -20 ~ 55°C |
| Storage Temperature | 0 ~ 35°C |
| Short Circuit Current/Duration | 175A, Delay time 500μs |
| Cooling Type | Nature |
| Protection Level | IP20 |
| Monthly Self-discharge | ≤ 3% / month |
| Humidity | ≤ 60% ROH |
| Altitude (m) | < 4000 |
| Warranty | 10 Years |
| Design Life | > 15 Years (25°C / 77°F) |
| Cycle Life | > 6000 cycles, 25°C |
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Why Bonnen Battery? Manufacturing Excellence & Quality Control
Choosing Bonnen means partnering with a manufacturer that prioritizes precision and reliability:
• Expertise: Over 10 years of specialized experience in lithium battery manufacturing and R&D.
• Rigorous Testing: We implement strict 30+ production processes for every unit.
• Multi-Step QC: Each rack module undergoes multiple quality checks, including cell balancing tests, capacity grading, and full-load discharge testing before leaving the factory.
• Our BMS provides 20+ protections and responds to faults in milliseconds, using high-precision chips to monitor cell-level voltage and temperature.
• Traceability: Every module is tracked from the individual cell level to the final assembly to ensure consistent performance.
Inverter & System Compatibility
To ensure a “plug-and-play” experience for our B2B partners, Bonnen has confirmed compatibility with major 48V off-grid inverters and hybrid PCS brands.
Seamless Communication: Equipped with RS485 and CAN communication protocols.
Verified Brands: Our rack modules are tested and verified to work with industry leaders such as Victron Energy, Growatt, Deye, Luxpower, Sofar, and Pylontech-compatible systems.
Smart Integration: The battery BMS talks directly to the inverter to optimize charging cycles and protect battery health automatically.

Lower replacement frequency
Because LiFePO4 lasts longer than lead-acid, users can replace batteries less often. That saves money and time.
Better uptime
A stable backup battery helps reduce downtime. For telecom and IT buyers, that can protect service quality and customer trust.
Easier handling
The battery is more compact and easier to install than many older backup battery options.
Lower total cost over time
Even if the first cost is higher than lead-acid, the long life and low maintenance often make the total cost lower in the long run.
Safer daily operation
LiFePO4 chemistry gives better thermal stability, which is a major plus for critical infrastructure.
Strong fit for modern systems
A 48V platform is a common standard in backup power. That makes system planning simpler.
Less maintenance work
No heavy maintenance schedule means less labor and fewer service visits.
Better project flexibility
For buyers, project teams, and OEM partners, this battery gives room for custom system design and future expansion.
Logistics, Warranty & Professional Support
Bonnen Battery supports international B2B orders with practical export and after-sales service.
5-year warranty options with dedicated B2B technical support
Safe UN carton packaging for international export and sea or air freight
Professional installation guidance and system planning services for project buyers
Export-friendly logistics support to help simplify shipping and delivery
Bonnen 48V 50Ah lithium ion battery is used in many backup and storage cases where uptime matters.
Telecom battery backup
Telecom base stations need stable backup power to keep signals and network equipment running. This battery helps protect against outages and unstable grid supply.
Server rack batteries
In server rooms and IT cabinets, power loss can lead to data loss or service interruptions. A 48V 50Ah LiFePO4 server rack battery gives dependable backup for critical loads.
Network equipment cabinets
Routers, switches, communication cabinets, and remote monitoring systems often need compact DC backup power. This battery is a strong fit for that use.
UPS backup systems
It works well in UPS-related systems where fast response and reliable output are key.
Remote power sites
For remote areas with unstable electricity, this battery helps keep essential systems online longer and more safely.
Industrial DC backup
It can also support industrial control systems, alarm systems, and other DC-based backup needs.
Q: What is a 48V 50Ah server rack battery?
A: It is a specialized lithium battery built in a rectangular case that fits into computer server racks. It provides 2.4kWh of energy backup for IT and telecom equipment.
Q: Is LiFePO4 better than lead-acid for telecom?
A: Yes. Compared with lead-acid, LiFePO4 batteries generally last much longer, weigh less, and handle deep discharges better without being damaged as easily.
Q: How long will a 48V 50Ah battery run my equipment?
A: It depends on your load. For example, if your equipment uses 500 watts, this battery can keep it running for several hours.
Q: Can I mix this with my old lead-acid batteries?
A: No, you should not. Mixing lithium and lead-acid batteries may cause charging issues and can damage the system. It is better to convert the whole system to lithium.
Q: How many 48V 50Ah batteries can I connect together?
A: In many systems, multiple units can be connected in parallel to expand capacity while keeping the voltage at 48V. The final number should be confirmed based on your system design.
Q: What is the lifespan of a Bonnen 48V 50Ah lithium battery?
A: Our batteries are designed for 6,000+ cycles. With proper use, they can last more than 10 years in many applications.
Q: Does it need a special charger?
A: Yes. It should be charged with a lithium or LiFePO4 charging profile. Using a lead-acid charger may prevent full charging or trigger BMS protection.
Q: Is it safe to keep in an office or home?
A: Yes. LiFePO4 is non-flammable under normal operating conditions and does not off-gas harmful fumes like lead-acid batteries during charging.
Q: What does the BMS actually do?
A: The BMS is the “brain” of the battery. It balances the cells, prevents over-voltage, shuts down in unsafe conditions, and protects against short circuits.
Q: How heavy is a 50Ah 48V rack battery?
A: It is much lighter than traditional lead-acid battery banks and is designed for easier handling and installation.
Q: Can I use this for my 48V golf cart?
A: While it is designed for rack applications, the core lithium technology is similar. However, you should confirm whether the discharge current matches your motor’s needs. Bonnen can also provide custom versions for other applications.
Q: Does it handle cold weather?
A: It can operate in low-temperature environments, but charging below 0°C should be avoided unless the battery has a built-in heater.
Q: How do I monitor the battery status?
A: You can monitor it through the front-panel LCD screen or connect it to your system via RS485 or CAN communication, depending on the configuration.
Q: Is 48V 50Ah enough for home backup?
A: It is a strong compact backup option. It can support lights, Wi-Fi, and small appliances for several hours, depending on the load.
Q: Where can I buy Bonnen batteries?
A: Bonnen Battery is an international manufacturer. You can contact us directly through bonnenbatteries.com for wholesale pricing and global shipping.
Q: Why is it called a “Server Rack” battery?
A: It is called a server rack battery because its dimensions are designed to fit standard rack cabinets used for servers, routers, and communication equipment.
Q: Does it work with my current solar inverter?
A: In many cases, yes. If your inverter uses a standard 48V battery input and a compatible charging profile, the battery can usually be integrated into the system. Final compatibility depends on inverter brand, communication protocol, and system settings, so model confirmation is recommended.
Q: What is the shipping time for a wholesale order?
A: Shipping time depends on order quantity, customization requirements, and destination. For standard wholesale orders, Bonnen will confirm the exact production and shipping schedule before order placement, and the team will support export documentation and freight coordination.
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