Polarium SLB48-230-146-5 | 48V | 230Ah | Lithium-ion Battery
The Polarium SLB48-230-146-5 is a high-capacity 48 V, 230 Ah lithium-ion battery engineered for critical backup applications across telecommunications networks, hybrid power systems, industrial environments, and remote infrastructure. Built on Polarium’s fifth-generation LFP platform, this 19-inch 4U module delivers 11.04 kWh of rated energy, pr...
Read MoreThe Polarium SLB48-230-146-5 is a high-capacity 48 V, 230 Ah lithium-ion battery engineered for critical backup applications across telecommunications networks, hybrid power systems, industrial environments, and remote infrastructure. Built on Polarium’s fifth-generation LFP platform, this 19-inch 4U module delivers 11.04 kWh of rated energy, providing extended runtime for sites requiring robust and long-duration backup power.
Developed for longevity, the battery offers a 20-year calendar life at 80 percent state of charge and up to 6000 cycles at full depth of discharge. Its iron-based chemistry supports stable performance under frequent cycling and varying load conditions, making it well suited to modern hybrid installations incorporating solar, generator, and grid-assisted operation.
The SLB48-230-146-5 is built for dependable operation across diverse Australian environments, with a wide thermal range supporting discharging from –20 °C to +60 °C and charging from 0 °C to +55 °C. Its 76.5 kg construction is housed within a rack-optimised 4U enclosure rated to IP20, suitable for telecom shelters, utilities, control rooms, and other indoor installations requiring high-density energy storage.
Electrical performance is supported by a BMS-controlled 100 A circuit breaker and a 6 kW peak discharge capability for transient load handling during grid outages or switchover events. Dual RS485/RJ45 ports with Modbus support allow integration with monitoring platforms, with Polarium Studio software included for full local management of battery status and performance.
For added site protection, the battery incorporates Polarium’s patented Anti Theft Device, which disables the unit if it is removed from its installation location. The feature can be activated by serial number under a licence fee, providing an additional layer of security for unattended or remote sites.
With high energy density, stable long-term performance, and integrated system intelligence, the SLB48-230-146-5 is a strong choice for operators aiming to improve the resilience and runtime of their backup power infrastructure.
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Features
- High-Energy LFP Storage for Extended Backup - With 230 Ah of rated capacity and 11.04 kWh of usable energy, this module provides long-duration autonomy for telecom networks, industrial control systems, and remote sites that require sustained backup during outages.
- Long Service Life with Strong Cycle Performance - Engineered for long-term operation, the battery offers up to 6000 cycles at 100 percent depth of discharge and maintains 80 percent SOH over its life, supporting frequent cycling in hybrid power systems and renewable-assisted installations.
- Wide Operating Temperature Range - Supports discharging from –20 °C to +60 °C and charging from 0 °C to +55 °C, ensuring dependable performance across varying Australian climates and indoor controlled environments.
- Intelligent Battery Management System - A built-in BMS provides continuous supervision, including cell balancing, automated reconnect after safe conditions return, voltage and temperature protection, current limiting, and comprehensive alarm functions to maintain stable operation.
- Advanced Monitoring & Communication Options - Dual RS485/RJ45 ports with Modbus support allow integration into site controllers and network management systems. Polarium Studio software is included for full local monitoring, configuration, and performance tracking.
- Enhanced Site Security with Anti-Theft Protection - The patented Anti-Theft Device disables battery functionality if it is removed from its installed site, supporting asset protection in remote or unattended locations.
Specifications
| TECHNICAL SPECIFICATIONS | |
|---|---|
| Enclosure Size | 19" 4U |
| Lithium chemistry | LFP |
| Rated Voltage | 48 V |
| Rated Capacity Ah (0.2C, 25°C to LVBD) | 230 Ah |
| Rated Energy Wh (0.2C, 25°C to LVBD) | 11040 Wh |
| Calendar Life @ 80% SOC | 20 years |
| Cycle Life | 6000 cycles, 0.2C, 25 °C, DoD 100%, SOH 80% |
| Peak Discharge Power | 6kW for 60 seconds |
| Discharge Cutoff Current | 100 A |
| End-of-Discharge Voltage (LVBD)* | 37.5 V |
| Charge Current Limitation (CLD)** | 100 A |
| Charge Voltage for 100% SOC | 54.7 V |
| Operating Temperature Charging | 0 to +55 °C (32 to 131 °F) |
| Operating Temperature Discharging | -20 to +60 °C (-4 to 140 °F) |
| Operating Relative Humidity | According to ETSI 300 019-1-3 class 3.2 (0-95%) |
| Storage Temperature | -20 to +60°C (-4 to 140°F) |
| Weight | 76.5 Kg (168 lbs) |
| Dimensions mm (in") | W 440 D 475 H 177.4 mm(W 17.3” D 18.7” H 6.98”) |
| Circuit breaker | 100 A, BMS Controlled, single pole |
| IP class | IP20 |
| Communication Protocols | RS485, RJ45 (2) ports, Modbus |
| Safety Standards | IEC62619, IEC62368, UN38.3 |
| Management & Monitoring | Software for PC (Studio) included for full local monitoring and management. Remote connection via Modbus |
| *Cut off when one cell reaches 2.5 V, 15 cells in series. **If the charge current is 100 A or higher, the battery will automatically reduce the chargecurrent to 6-12 A temporarily.Data subject to change without notice |
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Technical Drawings
Warranty & Returns
Warranty periods vary by product. Please refer to the Powerbox Warranty Policy for the applicable coverage period against manufacturing defects from date of purchase. For returns and RMA requests, please visit our RMA support page or contact our support team directly.