Rolls S48-100LFP ESS 48V 100Ah LiFePO4 Battery

  
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Rolls S48-100LFP ESS 48V 100Ah LiFePO₄ Battery

Key benefits

  • 48V 100Ah LiFePO₄ rack battery (5.12kWh) for residential and small commercial energy storage systems using a compact 19" 4U format.
  • Scalable up to 16 batteries in parallel for larger ESS banks, with integrated BMS and standard CAN/RS‑485 communication.
  • Long life lithium storage with >6000 cycles at 80% depth of discharge, designed as a low‑maintenance alternative to lead‑acid banks.

Brief description

The Rolls S48-100LFP ESS 48V 100Ah LiFePO₄ Battery is a 19" rack‑mount module from the S‑Series LFP ESS range, intended for use in modular energy storage systems. It combines 5.12kWh of storage, an integrated hardware BMS and multiple communication options, making it suitable for hybrid inverters in residential, light commercial and telecoms applications. Up to 16 units can be installed in parallel, including within optional Rolls ESS cabinets, to build larger battery banks as project requirements grow.

Key features

  • 48V, 100Ah LiFePO₄ module with 5.12kWh energy in a 19" 4U rack‑compatible chassis.
  • Integrated screen and controls with state‑of‑charge indication for quick status checks on site.
  • CAN bus and dual RS‑485 ports for communication with compatible inverters and external monitoring systems.
  • Built‑in hardware BMS with primary and secondary protection against over/under‑voltage, over‑current, temperature and short‑circuit faults.
  • IP54‑rated enclosure with built‑in handles, suitable for indoor plant rooms and protected technical spaces.

Technical specifications

Series information

Battery type LIFEPO4 LITHIUM BATTERY S48-100LFP ESS
Series S-SERIES LFP ESS
Warranty See Warranty Terms
Volts 48
Design 19" Rack Std.
Terminal Type M6

Charge / Discharge

Charge Voltage Range 56.0 - 58.4V
Recommended End of Discharge Voltage 48.0 V
End of Discharge Protection Voltage 41.6 V
Recommended Charge Voltage 57.6 V
Recommended Charge Current 0~10°C (32‑50°F) 0.2C 20A
Recommended Charge Current 10~35°C (50~95°F) 0.5C 50A
Recommended Charge Current 35~50°C (95~122°F) 0.2C 20A
Charge Mode Charge at recommend voltage & current by temperature until charge current drops to ≤ 0.05C (CC,CV)
Max Continuous Charge Current 50 A
Max Continuous Discharge Current 63 A
Surge Current Limit 500 A (300ms)
Charge Temperature Range 0°C~55°C 
Discharge Temperature Range -20°~60°C 
Storage Temperature Range -5°~45°C 

Capacity

Nominal Capacity 100 AH
Total Energy 5.12 kWh
Nominal Voltage 51.2 V

Safety

Cell type Cylindrical LiFePO4 cells [4Ah, 26700] (UL 1642)(UL 1973*)
Standards IEC62133 (cell), IEC62619(cell), UN38.3 (cell/pack)
Certifications ROHS (cell), CE system certification, IP54 Rating
Certification note *Additional certifications may be required for systems larger than 20kWh

Design

Form factor 19″ 4U rack-compatible
Parallel connectivity Up to 16 parallel connectivity
Controls and indication Integrated screen & controls; State-of-charge (SOC) indication
Communication CAN bus & RS-485 connectivity
Protection access External breaker access; Separate BMS breaker
PC connectivity PC Connectivity
Cabinet option Optional Rolls LFP ESS Cabinet (shown); Install up to 8 x S48-100LFP ESS units per cabinet

Battery Management System (BMS)

Type Integrated hardware BMS inside
Protection topology Independent charge & discharge protection, secondary protection
Protection functions Short-Circuit Protection, Over-Voltage Protection, Low-Voltage Protection, Over-Current Protection, Low-Temperature Protection, Over-Temperature Protection
Internal BMS Model 16S75A

Specifications – mechanical

Weight 50.5 kg 111.30 lbs
Length 555 mm 21.8"
Width 442 mm 17.4"
Height Incl. Term. 173 mm 6.8"
Handles Built-in
Measurement note Product measurements & weights are calculated based on sample data. Individual specifications are subject to vary due to the manufacturing process & battery components.

Operational limits and configuration

Expected Cycle Life >6000 @ 80% DOD, >3000 @ 100% DOD
Series Connection 1
Parallel Connection 16
Connectivity 2x RS-485, 1 x CAN bus; See Operating Manual for compatible inverters, communication types and protocols
Revision Rev.#2 | February 2024

Shipping

Shipping is available to the UK, Ireland, Africa, the Caribbean and worldwide. If the shipping rate is not shown at checkout, please contact us on +44 2080640335 or info@energian.co.uk for a tailored shipping quote.

UK expert support

UK expert support is available to help with system design, inverter compatibility checks and configuration of the Rolls S48-100LFP ESS 48V 100Ah LiFePO₄ Battery in your energy storage project. For multi‑battery ESS installations we recommend installation and commissioning through our trusted partners to ensure correct communication settings, protection coordination and safe operation.

You can contact us via phone, email or live chat, or visit our office for an in‑person consultation to discuss your site, preferred inverter and required battery capacity.

Documents available for download