Rolls VB12-314LFP 12V 314Ah LiFePO4 Battery

  
By Rolls Battery
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Rolls VB12-314LFP 12V 314Ah LiFePO₄ Battery

Key benefits

  • High-capacity 12V 314Ah LiFePO₄ leisure battery delivering 4.02kWh of energy in a single compact case for larger 12V and 48V systems.
  • Long service life with an expected 6000 cycles at 80% depth of discharge, helping to minimise replacement and downtime in demanding applications.
  • Integrated hardware BMS with full protection plus Bluetooth connectivity and dedicated iOS/Android app for straightforward monitoring and control.

Brief description

The Rolls VB12-314LFP 12V 314Ah LiFePO₄ Battery is part of the VB Series LFP range and is built around high-quality prismatic LiFePO₄ cells in an ABS enclosure. With 4.02kWh of storage, fast charge/discharge capability and maintenance-free design, it suits larger campervans, motorhomes, boats, off‑grid cabins and commercial service vehicles that need substantial 12V capacity in one unit. An integrated BMS manages safety, while an IP65 rating and Bluetooth connectivity make it practical for real-world leisure and light commercial environments.

Key features

  • 12.8V nominal, 314Ah capacity and 4.02kWh total energy for high‑demand 12V and 48V systems.
  • ABS container with rope/plastic handles and M8 terminals supplied with stainless bolts and washers for easy installation.
  • Fast charge/discharge performance with up to 150A continuous charge and discharge current.
  • Heating for low‑temperature operation plus wide charge and discharge temperature ranges.
  • Up to 4 units in series and 4 in parallel (4S4P at 48V) for scalable storage banks.

Technical specifications

General

Series VB Series LFP
Warranty See Warranty Terms
Volts 12
Design SPEC
Terminal Type M8
Included Hardware M8 stainless bolts & washers

Charge / Discharge

Charge Voltage Range 14.2–14.6V
End of Discharge Protection Voltage 11.2 V
Recommended Charge Current (‑20~50°C / ‑4–122°F) 0.32C 100A
Charge Mode Charge at recommend voltage & current by temperature until charge current drops to ≤ 0.05C (CC,CV)
Charge Mode Notes DO NOT USE TEMPERATURE COMPENSATION; No BTS (Battery Temperature Sensor)
Max Continuous Charge Current 150 A
Max Continuous Discharge Current 150 A
Charge Temperature Range -20~50°C (-4~122°F)
Discharge Temperature Range -20~55°C
Storage Temperature Range -5~45°C

Capacity

Nominal Capacity 314 AH
Total Energy 4.02 kWh
Nominal Voltage 12.8 V

Safety

Cell type Prismatic LiFePO4 cells (CB75/3.2V314Ah)
Standards IEC 62619 (cell), UL 1973 (cell), UN38.3 (cell/pack)
Certifications ROHS (cell), IP65 Rating

Design

Container ABS
Cover ABS
Handles Rope / Plastic Handle
Design features Fast charge/discharge performance; Maintenance-free operation; Heating for low temperature operation; Bluetooth Connectivity & dedicated IOS & Android App

Battery Management System (BMS)

Type Integrated hardware BMS inside
Internal BMS Model RD-RJ4S150A
Protection topology Independent charge & discharge protection
Protection functions Short-Circuit Protection, Over-Voltage Protection, Low-Voltage Protection, Over-Current Protection, Low-Temperature Protection, Over-Temperature Protection

Specifications – mechanical

Weight 31.5 kg / 69.4 lbs
Length 384 mm / 15.12"
Width 194 mm / 7.64"
Height 248 mm / 9.76"
Height Incl. Term. 253 mm / 9.96"
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
Series Connection 4 UNITS MAX (48V)
Parallel Connection 4 UNITS MAX (48V)
Connectivity Up to 4S4P (in 48V configuration)
Revision Rev.#2 | November 2025

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 battery selection, sizing and configuration of the Rolls VB12-314LFP 12V 314Ah LiFePO₄ Battery in leisure, marine and off‑grid systems. For larger banks or systems with inverters, chargers and DC distribution we recommend installation and commissioning via our trusted partners to ensure safe operation and correct protection settings.

You can contact us by phone, email or live chat, or visit our office for an in‑person consultation to discuss your project and preferred system layout.

Documents available for download