Polarium SLB48-150-145-5 | 48V | 150Ah | Lithium-ion Battery
The Polarium SLB48-150-145-5 is a high-capacity 48 V, 150 Ah lithium-ion backup battery engineered for operators requiring dependable energy storage across telecommunications networks, hybrid power systems, industrial infrastructure, and remote environments. Built on Polarium’s fifth-generation LFP platform, this 19-inch 4U module delivers stabl...
Read MoreThe Polarium SLB48-150-145-5 is a high-capacity 48 V, 150 Ah lithium-ion backup battery engineered for operators requiring dependable energy storage across telecommunications networks, hybrid power systems, industrial infrastructure, and remote environments. Built on Polarium’s fifth-generation LFP platform, this 19-inch 4U module delivers stable long-term performance with a rated energy capacity of 7.2 kWh and a durable iron-based chemistry optimised for demanding backup applications.
The battery is designed to support consistent operation in varied climates, with discharge capability down to –20 °C and charging supported from 0 °C to +55 °C. Its robust mechanical construction and IP20-rated enclosure are suited to controlled indoor installations such as telecom shelters, utility sites, control rooms, and industrial cabinets. At 58.6 kg, the unit balances high energy density with a practical form factor, allowing efficient integration into 19-inch rack systems.
A BMS-controlled 100 A circuit breaker provides protection during operation and maintenance, while integrated system supervision helps ensure safe and predictable performance over the battery’s lifecycle. The module’s electrical characteristics, including a 6 kW peak discharge capability and controlled charge profile, support reliable backup operation during grid outages, generator transitions, and renewable power fluctuations.
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 long service life, strong cycle performance, and smart system compatibility, the SLB48-150-145-5 offers a dependable, rack-optimised energy storage solution for operators seeking to upgrade or expand their backup power infrastructure.
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Features
- High-Capacity LFP Energy Storage - Delivers 150 Ah of rated capacity and 7.2 kWh of usable energy, providing extended backup time for telecommunications, industrial networks, and remote sites that require longer autonomy during outages.
- Durable Cycle Performance - Designed for long-term operation with up to 6000 cycles at 0.5C and 80% SOH, supporting frequent cycling in hybrid power systems and renewable-assisted sites where batteries regularly charge and discharge.
- Wide Environmental Operating Range - Supports discharging down to –20 °C and up to +60 °C, with charging available from 0 °C to +55 °C. This range enables dependable operation in Australian climate conditions and thermally variable enclosures.
- Integrated Battery Protection & Safety Controls - A built-in, BMS-controlled 100 A circuit breaker supports safe operation, along with protections for cell voltage, current, and temperature. Safety certifications include IEC62619, IEC62368, and UN38.3. The BMS includes automatic reconnect behaviour after safe conditions return.
- Smart Monitoring & System Intelligence - Equipped with dual RS485/RJ45 ports and Modbus communication, the battery supports local and remote monitoring through Polarium Studio software. Automatic cell balancing and system supervision maintain stable performance across its lifecycle.
- Secure Installation with Anti-Theft Capability - The module includes Polarium’s patented Anti-Theft Device, which disables battery operation if removed from the site, helping prevent unauthorised use.
Specifications
| TECHNICAL SPECIFICATIONS | |
|---|---|
| Enclosure Size | 19" 4U |
| Lithium chemistry | LFP |
| Rated Voltage | 48 V |
| Rated Capacity Ah (0.2C, 25°C to LVBD) | 150 Ah |
| Rated Energy Wh (0.2C, 25°C to LVBD) | 7200 Wh |
| Calendar Life @ 80% SOC | 15 years |
| Cycle Life | 6000 cycles, 0.5C, 25 °C,SOH 80% |
| Peak Discharge Power | 6kW for 60 seconds |
| Discharge Cutoff Current | 100 A |
| End-of-Discharge Voltage (LVBD)* | 40 V |
| Charge Current Limitation (CLD)** | 100 A |
| Charge Voltage for 100% SOC | 54.75 V |
| Min Charging Voltage | 52.5 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 | Approx. 58.6 Kg (129 lbs) |
| Dimensions mm (in") | W 440 D 475 H 177.4 mm(W 17.3” D 18.7” H 7.0”) |
| 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 whatever comes first.Data subject to change without notice **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.