1 1

SunWell Energy

5.12kWh 51.2V Portable Mobile LiFePO4 Battery

5.12kWh 51.2V Portable Mobile LiFePO4 Battery

Get a Quote Contact Us
Model

The 5.12kWh 51.2V Portable Mobile LiFePO4 Battery is a wheeled portable LiFePO4 battery for sites, events and off-grid loads. Built-in protection guards every cell against over-charge, over-discharge, over-current and short circuits. Its IP20 rating and operating range from -20°C to 50°C let it run reliably in dusty, humid or temperature-swing sites.

View full details
5.12kWh 51.2V Portable Mobile LiFePO4 Battery — Technical Specifications
MODELSW-51100-M
Rated Voltage51.2Vdc
Cell Combination16S1P
Rated Capacity100Ah
Energy Storage5.12kWh
Cycle Life25±2℃,0.5C/0.5C, EOL70%≥6000
Max. Charge Current100A
Max. Discharge Current100A
Discharge Cut-Off Voltage43.2Vdc
Charge Cut-Off Voltage57.6Vdc
Charge Temperature0°C to 50°C@60±25% Relative Humidity
Discharge Temperature-20°C to 50°C@60±25% Relative Humidity
Storage Temperature-20°C to 50°C@60±25% Relative Humidity
IP ClassIP20
Material SystemLiFePO4
Case MaterialMetal
Case TypeMobile Power
Product Dimension(L×W×H)612×370×190mm
Package Dimension(L×W×H)712×535×298mm
Net Weight55kg
Gross Weight60kg
ProtocolCAN/RS485/RS232
MonitoringBluetooth/WLAN Optional
CertificatesUN38.3, MSDS

Features

  • LiFePO4 chemistry delivers safe, long-lasting power. The cobalt-free cells resist thermal runaway and hold capacity through deep daily cycling, rated for 6000+ cycles at high state of health.
  • Wheeled portable build moves power anywhere. Integrated wheels and a handle roll the 5.12kWh between rooms, sites and events without fixed installation.
  • A multi-protocol BMS guards every cell. It tracks per-cell voltage, current and temperature, balances cells and blocks over-charge, over-discharge, over-current and short circuit, talking to inverters over CAN/RS485/RS232.
  • Long service life cuts ownership cost. Rated for 6000+ cycles, it supports years of daily charge and discharge without premature replacement.
  • Wide operating range suits tough sites. It discharges from -20°C to 50°C and handles up to 100A continuous current, staying stable in unconditioned indoor and sheltered spaces.
  • Parallel-ready design grows with you. Add more units on the same bus to expand capacity while keeping the existing inverter and cabling.

Applications

  • Residential Backup: Keeps lights, routers, and refrigeration running during outages as part of a home essential-load system.
  • Outdoor & Remote Sites: The mobile form factor and −20°C discharge range make it practical for camps, field work, and temporary setups.
  • Small Commercial Use: Powers tools and equipment at markets, exhibitions, and job sites without grid access.
  • Solar Energy Storage: Pairs with PV through hybrid inverters to store daytime solar for evening use.
  • Off-Grid Power: Supplies independent power for cabins, kiosks, and telecom sites away from the grid.
  • Events & Exhibitions: Delivers clean, silent backup power for lighting and AV at indoor and outdoor events.

Battery Safety & Protection

The SW-51100-M is built around Lithium Iron Phosphate (LiFePO4) cells, a chemistry known for thermal stability and a low risk of thermal runaway compared with other lithium types. The cells sit inside a metal enclosure rated IP20, which protects against solid-object contact and limits dust ingress in indoor and sheltered installations.

An integrated battery management system, accessed through the unit's CAN, RS485, and RS232 ports, handles cell monitoring and balancing for the 16S1P stack. Optional Bluetooth and WLAN modules let installers check status remotely, while the wide operating envelope—0°C to 50°C charging and −20°C to 50°C discharging—keeps the pack online through seasonal swings. UN38.3 and MSDS certifications confirm international transport-safety compliance.

Performance & Lifecycle Advantage

Rated at 5.12kWh (100Ah) with a 51.2V nominal output, the SW-51100-M delivers stable energy for sustained and high-current loads through its 100A continuous charge and discharge capability. A discharge cut-off of 43.2Vdc and charge cut-off of 57.6Vdc define a safe operating window that protects cell health over time.

The LiFePO4 chemistry provides a long design life of 6000 cycles at 70% capacity retention under 25±2°C, 0.5C conditions, supporting years of daily cycling. Weighing 55kg net with a 612×370×190mm form factor, the pack balances capacity and portability, and against lead-acid it offers lighter weight, lower maintenance, and better tolerance for frequent deep cycling—lower lifetime cost for off-grid and backup use.

Warranty

LiFePO4 batteries are backed by a 5-year warranty. If you experience any quality issues within the warranty period, please contact us and we will arrange a replacement or repair promptly.

Frequently Asked Questions

Will this battery work with my existing 51.2V inverter?

Yes, the SW-51100-M runs at a 51.2V nominal rating with CAN, RS485, and RS232 communication, so it communicates with most standard 51.2V off-grid and hybrid inverters. Confirm your inverter's protocol during setup.

How long can it power my equipment?

With 5.12kWh (100Ah) of stored energy, runtime depends on your load. A 500W draw gives roughly 9–10 hours, while heavier tools will draw it down faster. The 100A discharge rating handles high-startup-current devices well.

Can I add more batteries later?

Yes. Multiple units can be paralleled using the RS485/CAN bus to expand capacity and current as your needs grow, making it easy to scale from a single pack to a larger bank.

Is it safe to use in hot or cold weather?

The LiFePO4 cells and metal IP20 enclosure keep operation stable, with a charge range of 0–50°C and discharge down to −20°C. Avoid charging below freezing to protect cell health.

Expert Support

Our team of solar energy experts is ready to help you find the perfect solution for your needs.

Fast Response

We typically respond to all inquiries within 24 hours during business days.

Custom Solutions

Every project is unique. Let us design a solar solution tailored to your specific requirements.